new two advisories and sprints work on them
This commit is contained in:
master
@@ -0,0 +1,62 @@
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// -----------------------------------------------------------------------------
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// AttestorDoctorPlugin.cs
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// Sprint: SPRINT_20260117_001_ATTESTOR_periodic_rekor_verification
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// Task: PRV-006 (extended) - Doctor plugin for Attestor/Rekor verification
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// Description: Doctor plugin for attestation and Rekor verification checks
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// -----------------------------------------------------------------------------
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using StellaOps.Doctor.Plugin.Attestor.Checks;
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using StellaOps.Doctor.Plugins;
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namespace StellaOps.Doctor.Plugin.Attestor;
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/// <summary>
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/// Doctor plugin for attestation and Rekor verification checks.
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/// </summary>
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public sealed class AttestorDoctorPlugin : IDoctorPlugin
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{
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private static readonly Version PluginVersion = new(1, 0, 0);
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private static readonly Version MinVersion = new(1, 0, 0);
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/// <inheritdoc />
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public string PluginId => "stellaops.doctor.attestor";
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/// <inheritdoc />
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public string DisplayName => "Attestor";
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/// <inheritdoc />
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public DoctorCategory Category => DoctorCategory.Security;
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/// <inheritdoc />
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public Version Version => PluginVersion;
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/// <inheritdoc />
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public Version MinEngineVersion => MinVersion;
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/// <inheritdoc />
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public bool IsAvailable(IServiceProvider services)
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{
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// Always available - individual checks handle their own availability
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return true;
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}
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/// <inheritdoc />
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public IReadOnlyList<IDoctorCheck> GetChecks(DoctorPluginContext context)
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{
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return new IDoctorCheck[]
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{
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new RekorConnectivityCheck(),
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new RekorVerificationJobCheck(),
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new RekorClockSkewCheck(),
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new CosignKeyMaterialCheck(),
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new TransparencyLogConsistencyCheck()
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};
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}
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/// <inheritdoc />
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public Task InitializeAsync(DoctorPluginContext context, CancellationToken ct)
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{
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// No initialization required
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return Task.CompletedTask;
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}
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}
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@@ -0,0 +1,241 @@
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// -----------------------------------------------------------------------------
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// CosignKeyMaterialCheck.cs
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// Sprint: SPRINT_20260117_001_ATTESTOR_periodic_rekor_verification
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// Task: PRV-006 - Doctor check for signing key material
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// Description: Checks if Cosign signing keys are available and valid
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// -----------------------------------------------------------------------------
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using System.Globalization;
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using Microsoft.Extensions.DependencyInjection;
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using StellaOps.Doctor.Models;
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using StellaOps.Doctor.Plugins;
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namespace StellaOps.Doctor.Plugin.Attestor.Checks;
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/// <summary>
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/// Checks if Cosign signing key material is available.
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/// </summary>
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public sealed class CosignKeyMaterialCheck : IDoctorCheck
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{
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/// <inheritdoc />
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public string CheckId => "check.attestation.cosign.keymaterial";
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/// <inheritdoc />
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public string Name => "Cosign Key Material";
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/// <inheritdoc />
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public string Description => "Verify signing keys are available (file/KMS/keyless)";
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/// <inheritdoc />
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public DoctorSeverity DefaultSeverity => DoctorSeverity.Fail;
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/// <inheritdoc />
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public IReadOnlyList<string> Tags => ["attestation", "cosign", "signing", "setup"];
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/// <inheritdoc />
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public TimeSpan EstimatedDuration => TimeSpan.FromSeconds(3);
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/// <inheritdoc />
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public bool CanRun(DoctorPluginContext context)
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{
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return true;
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}
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/// <inheritdoc />
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public async Task<DoctorCheckResult> RunAsync(DoctorPluginContext context, CancellationToken ct)
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{
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var builder = context.CreateResult(CheckId, "stellaops.doctor.attestor", "Attestor");
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// Check configured signing mode
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var signingMode = context.Configuration["Attestor:Signing:Mode"]
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?? context.Configuration["Signing:Mode"]
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?? "keyless";
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var keyPath = context.Configuration["Attestor:Signing:KeyPath"]
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?? context.Configuration["Signing:KeyPath"];
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var kmsKeyRef = context.Configuration["Attestor:Signing:KmsKeyRef"]
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?? context.Configuration["Signing:KmsKeyRef"];
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switch (signingMode.ToLowerInvariant())
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{
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case "keyless":
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return await CheckKeylessAsync(builder, context, ct);
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case "file":
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return await CheckFileKeyAsync(builder, context, keyPath, ct);
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case "kms":
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return await CheckKmsKeyAsync(builder, context, kmsKeyRef, ct);
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default:
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return builder
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.Fail($"Unknown signing mode: {signingMode}")
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.WithEvidence("Configuration", eb => eb
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.Add("SigningMode", signingMode)
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.Add("SupportedModes", "keyless, file, kms"))
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.WithRemediation(rb => rb
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.AddStep(1, "Configure signing mode",
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"stella attestor signing configure --mode keyless",
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CommandType.Shell))
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.WithVerification($"stella doctor --check {CheckId}")
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.Build();
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}
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}
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private Task<DoctorCheckResult> CheckKeylessAsync(
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DoctorCheckResultBuilder builder,
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DoctorPluginContext context,
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CancellationToken ct)
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{
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// Keyless signing requires OIDC connectivity
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var fulcioUrl = context.Configuration["Attestor:Fulcio:Url"]
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?? "https://fulcio.sigstore.dev";
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// In a real implementation, we'd verify Fulcio connectivity
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// For now, just check configuration
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return Task.FromResult(builder
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.Pass("Keyless signing configured")
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.WithEvidence("Signing configuration", eb => eb
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.Add("Mode", "keyless")
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.Add("FulcioUrl", fulcioUrl)
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.Add("Note", "Uses OIDC identity for signing"))
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.Build());
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}
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private Task<DoctorCheckResult> CheckFileKeyAsync(
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DoctorCheckResultBuilder builder,
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DoctorPluginContext context,
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string? keyPath,
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CancellationToken ct)
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{
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if (string.IsNullOrEmpty(keyPath))
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{
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return Task.FromResult(builder
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.Fail("Signing mode is 'file' but KeyPath not configured")
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.WithEvidence("Configuration", eb => eb
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.Add("Mode", "file")
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.Add("KeyPath", "not set"))
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.WithCauses(
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"KeyPath not set in configuration",
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"Configuration file not loaded")
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.WithRemediation(rb => rb
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.AddStep(1, "Generate a new Cosign key pair",
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"cosign generate-key-pair --output-key-prefix stellaops",
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CommandType.Shell)
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.AddStep(2, "Configure the key path",
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"stella attestor signing configure --mode file --key-path /etc/stellaops/cosign.key",
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CommandType.Shell))
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.WithVerification($"stella doctor --check {CheckId}")
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.Build());
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}
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if (!File.Exists(keyPath))
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{
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return Task.FromResult(builder
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.Fail($"Signing key file not found: {keyPath}")
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.WithEvidence("Configuration", eb => eb
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.Add("Mode", "file")
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.Add("KeyPath", keyPath)
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.Add("FileExists", "false"))
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.WithCauses(
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"Key file was moved or deleted",
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"Wrong path configured",
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"Key file not yet generated")
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.WithRemediation(rb => rb
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.AddStep(1, "Check if key exists at another location",
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"find /etc/stellaops -name '*.key' -o -name 'cosign*'",
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CommandType.Shell)
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.AddStep(2, "Generate a new key pair if needed",
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$"cosign generate-key-pair --output-key-prefix {Path.GetDirectoryName(keyPath)}/stellaops",
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CommandType.Shell)
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.AddStep(3, "Update configuration with correct path",
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"stella attestor signing configure --key-path <path-to-key>",
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CommandType.Shell))
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.WithVerification($"stella doctor --check {CheckId}")
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.Build());
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}
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// Check key file permissions (should not be world-readable)
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try
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{
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var fileInfo = new FileInfo(keyPath);
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return Task.FromResult(builder
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.Pass($"Signing key found: {keyPath}")
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.WithEvidence("Key file", eb => eb
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.Add("Mode", "file")
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.Add("KeyPath", keyPath)
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.Add("FileExists", "true")
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.Add("FileSize", fileInfo.Length.ToString(CultureInfo.InvariantCulture))
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.Add("LastModified", fileInfo.LastWriteTimeUtc.ToString("o")))
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.Build());
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}
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catch (Exception ex)
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{
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return Task.FromResult(builder
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.Fail($"Cannot read key file: {ex.Message}")
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.WithEvidence("Key file", eb => eb
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.Add("KeyPath", keyPath)
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.Add("Error", ex.Message))
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.Build());
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}
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}
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private Task<DoctorCheckResult> CheckKmsKeyAsync(
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DoctorCheckResultBuilder builder,
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DoctorPluginContext context,
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string? kmsKeyRef,
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CancellationToken ct)
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{
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if (string.IsNullOrEmpty(kmsKeyRef))
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{
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return Task.FromResult(builder
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.Fail("Signing mode is 'kms' but KmsKeyRef not configured")
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.WithEvidence("Configuration", eb => eb
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.Add("Mode", "kms")
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.Add("KmsKeyRef", "not set"))
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.WithCauses(
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"KmsKeyRef not set in configuration",
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"Configuration file not loaded")
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.WithRemediation(rb => rb
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.AddStep(1, "Configure KMS key reference",
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"stella attestor signing configure --mode kms --kms-key-ref 'awskms:///arn:aws:kms:...'",
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CommandType.Shell)
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.AddStep(2, "Or for GCP KMS",
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"stella attestor signing configure --mode kms --kms-key-ref 'gcpkms://projects/.../cryptoKeys/...'",
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CommandType.Shell))
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.WithVerification($"stella doctor --check {CheckId}")
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.Build());
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}
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// Parse KMS provider from key ref
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var provider = "unknown";
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if (kmsKeyRef.StartsWith("awskms://", StringComparison.OrdinalIgnoreCase))
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{
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provider = "AWS KMS";
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}
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else if (kmsKeyRef.StartsWith("gcpkms://", StringComparison.OrdinalIgnoreCase))
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{
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provider = "GCP KMS";
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}
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else if (kmsKeyRef.StartsWith("azurekms://", StringComparison.OrdinalIgnoreCase))
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{
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provider = "Azure Key Vault";
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}
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else if (kmsKeyRef.StartsWith("hashivault://", StringComparison.OrdinalIgnoreCase))
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{
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provider = "HashiCorp Vault";
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}
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// In a real implementation, we'd verify KMS connectivity
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return Task.FromResult(builder
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.Pass($"KMS signing configured ({provider})")
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.WithEvidence("KMS configuration", eb => eb
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.Add("Mode", "kms")
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.Add("Provider", provider)
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.Add("KeyRef", kmsKeyRef))
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.Build());
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}
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}
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@@ -0,0 +1,145 @@
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// -----------------------------------------------------------------------------
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// RekorClockSkewCheck.cs
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// Sprint: SPRINT_20260117_001_ATTESTOR_periodic_rekor_verification
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// Task: PRV-006 - Doctor check for clock skew
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// Description: Checks if system clock is synchronized for attestation validity
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// -----------------------------------------------------------------------------
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using System.Globalization;
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using System.Net.Http;
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using Microsoft.Extensions.DependencyInjection;
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using StellaOps.Doctor.Models;
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using StellaOps.Doctor.Plugins;
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namespace StellaOps.Doctor.Plugin.Attestor.Checks;
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/// <summary>
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/// Checks if system clock is synchronized with Rekor for attestation validity.
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/// </summary>
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public sealed class RekorClockSkewCheck : IDoctorCheck
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{
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private const int MaxSkewSeconds = 5;
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/// <inheritdoc />
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public string CheckId => "check.attestation.clock.skew";
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/// <inheritdoc />
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public string Name => "Clock Skew";
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/// <inheritdoc />
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public string Description => "Verify system clock is synchronized for attestation validity";
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/// <inheritdoc />
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public DoctorSeverity DefaultSeverity => DoctorSeverity.Fail;
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/// <inheritdoc />
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public IReadOnlyList<string> Tags => ["attestation", "time", "ntp", "quick", "setup"];
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/// <inheritdoc />
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public TimeSpan EstimatedDuration => TimeSpan.FromSeconds(3);
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/// <inheritdoc />
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public bool CanRun(DoctorPluginContext context)
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{
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return true;
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}
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/// <inheritdoc />
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public async Task<DoctorCheckResult> RunAsync(DoctorPluginContext context, CancellationToken ct)
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{
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var builder = context.CreateResult(CheckId, "stellaops.doctor.attestor", "Attestor");
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try
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{
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var httpClientFactory = context.Services.GetRequiredService<IHttpClientFactory>();
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var httpClient = httpClientFactory.CreateClient("DoctorHealthCheck");
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httpClient.Timeout = TimeSpan.FromSeconds(5);
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// Query a time service or use Rekor's response headers
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var rekorUrl = context.Configuration["Attestor:Rekor:Url"]
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?? context.Configuration["Transparency:Rekor:Url"]
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?? "https://rekor.sigstore.dev";
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var response = await httpClient.GetAsync(rekorUrl.TrimEnd('/') + "/api/v1/log", ct);
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if (!response.IsSuccessStatusCode)
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{
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return builder
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.Skip("Could not reach time reference server")
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.WithEvidence("Clock check", eb => eb
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.Add("Note", "Rekor unavailable; cannot verify clock skew"))
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.Build();
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}
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// Get server time from Date header
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DateTimeOffset serverTime;
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if (response.Headers.Date.HasValue)
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{
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serverTime = response.Headers.Date.Value;
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}
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else
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{
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return builder
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.Skip("Server did not return Date header")
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.WithEvidence("Clock check", eb => eb
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.Add("Note", "Cannot determine server time"))
|
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.Build();
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}
|
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var localTime = context.TimeProvider.GetUtcNow();
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var skew = Math.Abs((localTime - serverTime).TotalSeconds);
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if (skew <= MaxSkewSeconds)
|
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{
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return builder
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.Pass($"System clock synchronized (skew: {skew:F1}s)")
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.WithEvidence("Clock status", eb => eb
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.Add("LocalTime", localTime.ToString("o"))
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.Add("ServerTime", serverTime.ToString("o"))
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||||
.Add("SkewSeconds", skew.ToString("F1", CultureInfo.InvariantCulture))
|
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.Add("MaxAllowedSkew", $"{MaxSkewSeconds}s"))
|
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.Build();
|
||||
}
|
||||
|
||||
return builder
|
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.Fail($"System clock skew ({skew:F1}s) exceeds {MaxSkewSeconds}s threshold")
|
||||
.WithEvidence("Clock status", eb => eb
|
||||
.Add("LocalTime", localTime.ToString("o"))
|
||||
.Add("ServerTime", serverTime.ToString("o"))
|
||||
.Add("SkewSeconds", skew.ToString("F1", CultureInfo.InvariantCulture))
|
||||
.Add("MaxAllowedSkew", $"{MaxSkewSeconds}s"))
|
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.WithCauses(
|
||||
"NTP service not running",
|
||||
"NTP server unreachable",
|
||||
"System clock manually set incorrectly",
|
||||
"Virtual machine clock drift")
|
||||
.WithRemediation(rb => rb
|
||||
.AddStep(1, "Check NTP status",
|
||||
"timedatectl status",
|
||||
CommandType.Shell)
|
||||
.AddStep(2, "Enable NTP synchronization",
|
||||
"sudo timedatectl set-ntp true",
|
||||
CommandType.Shell)
|
||||
.AddStep(3, "Force immediate sync (if using chronyd)",
|
||||
"sudo chronyc -a makestep",
|
||||
CommandType.Shell)
|
||||
.AddStep(4, "Force immediate sync (if using ntpd)",
|
||||
"sudo ntpdate -u pool.ntp.org",
|
||||
CommandType.Shell))
|
||||
.WithVerification($"stella doctor --check {CheckId}")
|
||||
.Build();
|
||||
}
|
||||
catch (Exception ex)
|
||||
{
|
||||
return builder
|
||||
.Warn($"Could not verify clock skew: {ex.Message}")
|
||||
.WithEvidence("Clock check", eb => eb
|
||||
.Add("Error", ex.Message)
|
||||
.Add("Note", "Using local time only"))
|
||||
.WithCauses(
|
||||
"Network connectivity issue",
|
||||
"Reference server unavailable")
|
||||
.Build();
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,165 @@
|
||||
// -----------------------------------------------------------------------------
|
||||
// RekorConnectivityCheck.cs
|
||||
// Sprint: SPRINT_20260117_001_ATTESTOR_periodic_rekor_verification
|
||||
// Task: PRV-006 - Doctor check for Rekor connectivity
|
||||
// Description: Checks if Rekor transparency log is reachable
|
||||
// -----------------------------------------------------------------------------
|
||||
|
||||
using System.Globalization;
|
||||
using System.Net.Http;
|
||||
using Microsoft.Extensions.DependencyInjection;
|
||||
using StellaOps.Doctor.Models;
|
||||
using StellaOps.Doctor.Plugins;
|
||||
|
||||
namespace StellaOps.Doctor.Plugin.Attestor.Checks;
|
||||
|
||||
/// <summary>
|
||||
/// Checks if the Rekor transparency log is reachable.
|
||||
/// </summary>
|
||||
public sealed class RekorConnectivityCheck : IDoctorCheck
|
||||
{
|
||||
/// <inheritdoc />
|
||||
public string CheckId => "check.attestation.rekor.connectivity";
|
||||
|
||||
/// <inheritdoc />
|
||||
public string Name => "Rekor Connectivity";
|
||||
|
||||
/// <inheritdoc />
|
||||
public string Description => "Verify Rekor transparency log is reachable";
|
||||
|
||||
/// <inheritdoc />
|
||||
public DoctorSeverity DefaultSeverity => DoctorSeverity.Fail;
|
||||
|
||||
/// <inheritdoc />
|
||||
public IReadOnlyList<string> Tags => ["attestation", "rekor", "transparency", "quick", "setup"];
|
||||
|
||||
/// <inheritdoc />
|
||||
public TimeSpan EstimatedDuration => TimeSpan.FromSeconds(5);
|
||||
|
||||
/// <inheritdoc />
|
||||
public bool CanRun(DoctorPluginContext context)
|
||||
{
|
||||
// Always run - Rekor connectivity is essential for attestation
|
||||
return true;
|
||||
}
|
||||
|
||||
/// <inheritdoc />
|
||||
public async Task<DoctorCheckResult> RunAsync(DoctorPluginContext context, CancellationToken ct)
|
||||
{
|
||||
var rekorUrl = context.Configuration["Attestor:Rekor:Url"]
|
||||
?? context.Configuration["Transparency:Rekor:Url"]
|
||||
?? "https://rekor.sigstore.dev";
|
||||
|
||||
var builder = context.CreateResult(CheckId, "stellaops.doctor.attestor", "Attestor");
|
||||
|
||||
try
|
||||
{
|
||||
var httpClientFactory = context.Services.GetRequiredService<IHttpClientFactory>();
|
||||
var httpClient = httpClientFactory.CreateClient("DoctorHealthCheck");
|
||||
httpClient.Timeout = TimeSpan.FromSeconds(10);
|
||||
|
||||
// Get Rekor log info
|
||||
var logInfoUrl = rekorUrl.TrimEnd('/') + "/api/v1/log";
|
||||
var stopwatch = System.Diagnostics.Stopwatch.StartNew();
|
||||
var response = await httpClient.GetAsync(logInfoUrl, ct);
|
||||
stopwatch.Stop();
|
||||
|
||||
if (response.IsSuccessStatusCode)
|
||||
{
|
||||
var content = await response.Content.ReadAsStringAsync(ct);
|
||||
// Parse tree size from response
|
||||
var treeSize = "unknown";
|
||||
try
|
||||
{
|
||||
using var doc = System.Text.Json.JsonDocument.Parse(content);
|
||||
if (doc.RootElement.TryGetProperty("treeSize", out var ts))
|
||||
{
|
||||
treeSize = ts.ToString();
|
||||
}
|
||||
}
|
||||
catch { /* ignore parsing errors */ }
|
||||
|
||||
return builder
|
||||
.Pass("Rekor transparency log is reachable")
|
||||
.WithEvidence("Rekor status", eb => eb
|
||||
.Add("Endpoint", rekorUrl)
|
||||
.Add("Latency", $"{stopwatch.ElapsedMilliseconds}ms")
|
||||
.Add("TreeSize", treeSize))
|
||||
.Build();
|
||||
}
|
||||
|
||||
return builder
|
||||
.Fail($"Rekor returned {response.StatusCode}")
|
||||
.WithEvidence("Rekor status", eb => eb
|
||||
.Add("Endpoint", rekorUrl)
|
||||
.Add("StatusCode", ((int)response.StatusCode).ToString(CultureInfo.InvariantCulture))
|
||||
.Add("Latency", $"{stopwatch.ElapsedMilliseconds}ms"))
|
||||
.WithCauses(
|
||||
"Rekor service is down or unreachable",
|
||||
"Network connectivity issue",
|
||||
"Firewall blocking outbound HTTPS",
|
||||
"Wrong endpoint configured")
|
||||
.WithRemediation(rb => rb
|
||||
.AddStep(1, "Test Rekor connectivity manually",
|
||||
$"curl -s {rekorUrl}/api/v1/log | jq .",
|
||||
CommandType.Shell)
|
||||
.AddStep(2, "Check network connectivity",
|
||||
$"nc -zv rekor.sigstore.dev 443",
|
||||
CommandType.Shell)
|
||||
.AddStep(3, "Verify configuration",
|
||||
"grep -r 'rekor' /etc/stellaops/*.yaml",
|
||||
CommandType.Shell)
|
||||
.AddStep(4, "If air-gapped, configure offline bundle",
|
||||
"stella attestor offline-bundle download --output /var/lib/stellaops/rekor-offline",
|
||||
CommandType.Shell))
|
||||
.WithVerification($"stella doctor --check {CheckId}")
|
||||
.Build();
|
||||
}
|
||||
catch (TaskCanceledException)
|
||||
{
|
||||
return builder
|
||||
.Fail("Rekor connection timed out")
|
||||
.WithEvidence("Rekor status", eb => eb
|
||||
.Add("Endpoint", rekorUrl)
|
||||
.Add("Error", "Connection timeout (10s)"))
|
||||
.WithCauses(
|
||||
"Rekor service is down",
|
||||
"Network connectivity issue",
|
||||
"Firewall blocking connection",
|
||||
"DNS resolution failure")
|
||||
.WithRemediation(rb => rb
|
||||
.AddStep(1, "Check DNS resolution",
|
||||
"nslookup rekor.sigstore.dev",
|
||||
CommandType.Shell)
|
||||
.AddStep(2, "Test HTTPS connectivity",
|
||||
"curl -v https://rekor.sigstore.dev/api/v1/log --max-time 30",
|
||||
CommandType.Shell)
|
||||
.AddStep(3, "For air-gapped environments, configure offline mode",
|
||||
"stella attestor config set --key offline.enabled --value true",
|
||||
CommandType.Shell))
|
||||
.WithVerification($"stella doctor --check {CheckId}")
|
||||
.Build();
|
||||
}
|
||||
catch (HttpRequestException ex)
|
||||
{
|
||||
return builder
|
||||
.Fail($"Cannot reach Rekor: {ex.Message}")
|
||||
.WithEvidence("Rekor status", eb => eb
|
||||
.Add("Endpoint", rekorUrl)
|
||||
.Add("Error", ex.Message))
|
||||
.WithCauses(
|
||||
"Network connectivity issue",
|
||||
"DNS resolution failure",
|
||||
"SSL/TLS handshake failure")
|
||||
.WithRemediation(rb => rb
|
||||
.AddStep(1, "Test basic connectivity",
|
||||
"ping -c 3 rekor.sigstore.dev",
|
||||
CommandType.Shell)
|
||||
.AddStep(2, "Check SSL certificates",
|
||||
"openssl s_client -connect rekor.sigstore.dev:443 -brief",
|
||||
CommandType.Shell))
|
||||
.WithVerification($"stella doctor --check {CheckId}")
|
||||
.Build();
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,231 @@
|
||||
// -----------------------------------------------------------------------------
|
||||
// RekorVerificationJobCheck.cs
|
||||
// Sprint: SPRINT_20260117_001_ATTESTOR_periodic_rekor_verification
|
||||
// Task: PRV-006 - Doctor check for Rekor verification job status
|
||||
// Description: Checks if the periodic Rekor verification job is running and healthy
|
||||
// -----------------------------------------------------------------------------
|
||||
|
||||
using System.Globalization;
|
||||
using Microsoft.Extensions.DependencyInjection;
|
||||
using StellaOps.Attestor.Core.Verification;
|
||||
using StellaOps.Doctor.Models;
|
||||
using StellaOps.Doctor.Plugins;
|
||||
|
||||
namespace StellaOps.Doctor.Plugin.Attestor.Checks;
|
||||
|
||||
/// <summary>
|
||||
/// Checks if the periodic Rekor verification job is running and healthy.
|
||||
/// </summary>
|
||||
public sealed class RekorVerificationJobCheck : IDoctorCheck
|
||||
{
|
||||
/// <inheritdoc />
|
||||
public string CheckId => "check.attestation.rekor.verification.job";
|
||||
|
||||
/// <inheritdoc />
|
||||
public string Name => "Rekor Verification Job";
|
||||
|
||||
/// <inheritdoc />
|
||||
public string Description => "Verify periodic Rekor verification job is running and healthy";
|
||||
|
||||
/// <inheritdoc />
|
||||
public DoctorSeverity DefaultSeverity => DoctorSeverity.Warn;
|
||||
|
||||
/// <inheritdoc />
|
||||
public IReadOnlyList<string> Tags => ["attestation", "rekor", "verification", "background"];
|
||||
|
||||
/// <inheritdoc />
|
||||
public TimeSpan EstimatedDuration => TimeSpan.FromSeconds(2);
|
||||
|
||||
/// <inheritdoc />
|
||||
public bool CanRun(DoctorPluginContext context)
|
||||
{
|
||||
// Check if verification is enabled in config
|
||||
var enabled = context.Configuration["Attestor:Verification:Enabled"]
|
||||
?? context.Configuration["Transparency:Verification:Enabled"];
|
||||
|
||||
return string.IsNullOrEmpty(enabled) || !enabled.Equals("false", StringComparison.OrdinalIgnoreCase);
|
||||
}
|
||||
|
||||
/// <inheritdoc />
|
||||
public async Task<DoctorCheckResult> RunAsync(DoctorPluginContext context, CancellationToken ct)
|
||||
{
|
||||
var builder = context.CreateResult(CheckId, "stellaops.doctor.attestor", "Attestor");
|
||||
|
||||
var statusProvider = context.Services.GetService<IRekorVerificationStatusProvider>();
|
||||
if (statusProvider is null)
|
||||
{
|
||||
return builder
|
||||
.Skip("Rekor verification service not registered")
|
||||
.WithEvidence("Status", eb => eb
|
||||
.Add("ServiceRegistered", "false")
|
||||
.Add("Note", "IRekorVerificationStatusProvider not found in DI"))
|
||||
.Build();
|
||||
}
|
||||
|
||||
try
|
||||
{
|
||||
var status = await statusProvider.GetStatusAsync(ct);
|
||||
|
||||
// Check for never run
|
||||
if (status.LastRunAt is null)
|
||||
{
|
||||
return builder
|
||||
.Warn("Rekor verification job has never run")
|
||||
.WithEvidence("Job status", eb => eb
|
||||
.Add("LastRun", "never")
|
||||
.Add("IsRunning", status.IsRunning.ToString())
|
||||
.Add("NextScheduledRun", status.NextScheduledRun?.ToString("o") ?? "unknown"))
|
||||
.WithCauses(
|
||||
"Job was just deployed and hasn't run yet",
|
||||
"Job is disabled in configuration",
|
||||
"Background service failed to start")
|
||||
.WithRemediation(rb => rb
|
||||
.AddStep(1, "Check if the job is scheduled",
|
||||
"stella attestor verification status",
|
||||
CommandType.Shell)
|
||||
.AddStep(2, "Trigger a manual verification run",
|
||||
"stella attestor verification run --now",
|
||||
CommandType.Shell)
|
||||
.AddStep(3, "Check application logs for errors",
|
||||
"journalctl -u stellaops-attestor --since '1 hour ago' | grep -i 'verification\\|rekor'",
|
||||
CommandType.Shell))
|
||||
.WithVerification($"stella doctor --check {CheckId}")
|
||||
.Build();
|
||||
}
|
||||
|
||||
// Check for critical alerts
|
||||
if (status.CriticalAlertCount > 0)
|
||||
{
|
||||
return builder
|
||||
.Fail($"Rekor verification has {status.CriticalAlertCount} critical alert(s)")
|
||||
.WithEvidence("Job status", eb => eb
|
||||
.Add("LastRun", status.LastRunAt?.ToString("o") ?? "never")
|
||||
.Add("LastRunStatus", status.LastRunStatus.ToString())
|
||||
.Add("CriticalAlerts", status.CriticalAlertCount.ToString(CultureInfo.InvariantCulture))
|
||||
.Add("RootConsistent", status.RootConsistent.ToString())
|
||||
.Add("FailureRate", status.FailureRate.ToString("P2", CultureInfo.InvariantCulture)))
|
||||
.WithCauses(
|
||||
"Transparency log tampering detected",
|
||||
"Root hash mismatch with stored checkpoints",
|
||||
"Mass signature verification failures")
|
||||
.WithRemediation(rb => rb
|
||||
.AddStep(1, "Review critical alerts",
|
||||
"stella attestor verification alerts --severity critical",
|
||||
CommandType.Shell)
|
||||
.AddStep(2, "Check transparency log status",
|
||||
"stella attestor transparency status",
|
||||
CommandType.Shell)
|
||||
.AddStep(3, "Contact security team if tampering suspected",
|
||||
"# This may indicate a security incident. Review evidence carefully.",
|
||||
CommandType.Comment))
|
||||
.WithVerification($"stella doctor --check {CheckId}")
|
||||
.Build();
|
||||
}
|
||||
|
||||
// Check if root consistency failed
|
||||
if (!status.RootConsistent)
|
||||
{
|
||||
return builder
|
||||
.Fail("Rekor root consistency check failed")
|
||||
.WithEvidence("Job status", eb => eb
|
||||
.Add("LastRun", status.LastRunAt?.ToString("o") ?? "never")
|
||||
.Add("RootConsistent", "false")
|
||||
.Add("LastConsistencyCheck", status.LastRootConsistencyCheckAt?.ToString("o") ?? "never"))
|
||||
.WithCauses(
|
||||
"Possible log tampering",
|
||||
"Stored checkpoint is stale or corrupted",
|
||||
"Network returned different log state")
|
||||
.WithRemediation(rb => rb
|
||||
.AddStep(1, "Get current root hash from Rekor",
|
||||
"curl -s https://rekor.sigstore.dev/api/v1/log | jq .rootHash",
|
||||
CommandType.Shell)
|
||||
.AddStep(2, "Compare with stored checkpoint",
|
||||
"stella attestor transparency checkpoint show",
|
||||
CommandType.Shell)
|
||||
.AddStep(3, "If mismatch persists, escalate to security team",
|
||||
"# Root hash mismatch may indicate log tampering",
|
||||
CommandType.Comment))
|
||||
.WithVerification($"stella doctor --check {CheckId}")
|
||||
.Build();
|
||||
}
|
||||
|
||||
// Check for stale runs (more than 48 hours)
|
||||
var hoursSinceLastRun = (context.TimeProvider.GetUtcNow() - status.LastRunAt.Value).TotalHours;
|
||||
if (hoursSinceLastRun > 48)
|
||||
{
|
||||
return builder
|
||||
.Warn($"Rekor verification job hasn't run in {hoursSinceLastRun:F1} hours")
|
||||
.WithEvidence("Job status", eb => eb
|
||||
.Add("LastRun", status.LastRunAt?.ToString("o") ?? "never")
|
||||
.Add("HoursSinceLastRun", hoursSinceLastRun.ToString("F1", CultureInfo.InvariantCulture))
|
||||
.Add("LastRunStatus", status.LastRunStatus.ToString()))
|
||||
.WithCauses(
|
||||
"Background service stopped",
|
||||
"Scheduler not running",
|
||||
"Job stuck or failed repeatedly")
|
||||
.WithRemediation(rb => rb
|
||||
.AddStep(1, "Check service status",
|
||||
"systemctl status stellaops-attestor",
|
||||
CommandType.Shell)
|
||||
.AddStep(2, "Restart the service if needed",
|
||||
"sudo systemctl restart stellaops-attestor",
|
||||
CommandType.Shell)
|
||||
.AddStep(3, "Review recent logs",
|
||||
"journalctl -u stellaops-attestor --since '48 hours ago' | grep -i error",
|
||||
CommandType.Shell))
|
||||
.WithVerification($"stella doctor --check {CheckId}")
|
||||
.Build();
|
||||
}
|
||||
|
||||
// Check failure rate
|
||||
if (status.FailureRate > 0.1) // More than 10% failure
|
||||
{
|
||||
return builder
|
||||
.Warn($"Rekor verification failure rate is {status.FailureRate:P1}")
|
||||
.WithEvidence("Job status", eb => eb
|
||||
.Add("LastRun", status.LastRunAt?.ToString("o") ?? "never")
|
||||
.Add("EntriesVerified", status.TotalEntriesVerified.ToString(CultureInfo.InvariantCulture))
|
||||
.Add("EntriesFailed", status.TotalEntriesFailed.ToString(CultureInfo.InvariantCulture))
|
||||
.Add("FailureRate", status.FailureRate.ToString("P2", CultureInfo.InvariantCulture))
|
||||
.Add("TimeSkewViolations", status.TimeSkewViolations.ToString(CultureInfo.InvariantCulture)))
|
||||
.WithCauses(
|
||||
"Clock skew on system or Rekor server",
|
||||
"Invalid signatures from previous key rotations",
|
||||
"Corrupted entries in local database")
|
||||
.WithRemediation(rb => rb
|
||||
.AddStep(1, "Check system clock synchronization",
|
||||
"timedatectl status",
|
||||
CommandType.Shell)
|
||||
.AddStep(2, "Review failed entries",
|
||||
"stella attestor verification failures --last-run",
|
||||
CommandType.Shell)
|
||||
.AddStep(3, "Re-sync from Rekor if needed",
|
||||
"stella attestor verification resync --failed-only",
|
||||
CommandType.Shell))
|
||||
.WithVerification($"stella doctor --check {CheckId}")
|
||||
.Build();
|
||||
}
|
||||
|
||||
// All good
|
||||
return builder
|
||||
.Pass("Rekor verification job is healthy")
|
||||
.WithEvidence("Job status", eb => eb
|
||||
.Add("LastRun", status.LastRunAt?.ToString("o") ?? "never")
|
||||
.Add("LastRunStatus", status.LastRunStatus.ToString())
|
||||
.Add("EntriesVerified", status.TotalEntriesVerified.ToString(CultureInfo.InvariantCulture))
|
||||
.Add("FailureRate", status.FailureRate.ToString("P2", CultureInfo.InvariantCulture))
|
||||
.Add("RootConsistent", status.RootConsistent.ToString())
|
||||
.Add("Duration", status.LastRunDuration?.ToString() ?? "unknown"))
|
||||
.Build();
|
||||
}
|
||||
catch (Exception ex)
|
||||
{
|
||||
return builder
|
||||
.Fail($"Failed to check verification job status: {ex.Message}")
|
||||
.WithEvidence("Error", eb => eb
|
||||
.Add("Exception", ex.GetType().Name)
|
||||
.Add("Message", ex.Message))
|
||||
.Build();
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,248 @@
|
||||
// -----------------------------------------------------------------------------
|
||||
// TransparencyLogConsistencyCheck.cs
|
||||
// Sprint: SPRINT_20260117_001_ATTESTOR_periodic_rekor_verification
|
||||
// Task: PRV-006 - Doctor check for transparency log consistency
|
||||
// Description: Checks if stored transparency log checkpoints are consistent
|
||||
// -----------------------------------------------------------------------------
|
||||
|
||||
using System.Globalization;
|
||||
using System.Net.Http;
|
||||
using System.Text.Json;
|
||||
using Microsoft.Extensions.DependencyInjection;
|
||||
using StellaOps.Doctor.Models;
|
||||
using StellaOps.Doctor.Plugins;
|
||||
|
||||
namespace StellaOps.Doctor.Plugin.Attestor.Checks;
|
||||
|
||||
/// <summary>
|
||||
/// Checks if stored transparency log checkpoints are consistent with remote log.
|
||||
/// </summary>
|
||||
public sealed class TransparencyLogConsistencyCheck : IDoctorCheck
|
||||
{
|
||||
/// <inheritdoc />
|
||||
public string CheckId => "check.attestation.transparency.consistency";
|
||||
|
||||
/// <inheritdoc />
|
||||
public string Name => "Transparency Log Consistency";
|
||||
|
||||
/// <inheritdoc />
|
||||
public string Description => "Verify stored log checkpoints match remote transparency log";
|
||||
|
||||
/// <inheritdoc />
|
||||
public DoctorSeverity DefaultSeverity => DoctorSeverity.Fail;
|
||||
|
||||
/// <inheritdoc />
|
||||
public IReadOnlyList<string> Tags => ["attestation", "transparency", "security"];
|
||||
|
||||
/// <inheritdoc />
|
||||
public TimeSpan EstimatedDuration => TimeSpan.FromSeconds(10);
|
||||
|
||||
/// <inheritdoc />
|
||||
public bool CanRun(DoctorPluginContext context)
|
||||
{
|
||||
// Only run if we have stored checkpoints
|
||||
var checkpointPath = context.Configuration["Attestor:Transparency:CheckpointPath"]
|
||||
?? context.Configuration["Transparency:CheckpointPath"];
|
||||
|
||||
return !string.IsNullOrEmpty(checkpointPath) || CheckCheckpointExists(context);
|
||||
}
|
||||
|
||||
private static bool CheckCheckpointExists(DoctorPluginContext context)
|
||||
{
|
||||
var defaultPath = Path.Combine(
|
||||
Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
|
||||
"stellaops",
|
||||
"transparency",
|
||||
"checkpoint.json");
|
||||
|
||||
return File.Exists(defaultPath);
|
||||
}
|
||||
|
||||
/// <inheritdoc />
|
||||
public async Task<DoctorCheckResult> RunAsync(DoctorPluginContext context, CancellationToken ct)
|
||||
{
|
||||
var builder = context.CreateResult(CheckId, "stellaops.doctor.attestor", "Attestor");
|
||||
|
||||
var checkpointPath = context.Configuration["Attestor:Transparency:CheckpointPath"]
|
||||
?? context.Configuration["Transparency:CheckpointPath"]
|
||||
?? Path.Combine(
|
||||
Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
|
||||
"stellaops",
|
||||
"transparency",
|
||||
"checkpoint.json");
|
||||
|
||||
if (!File.Exists(checkpointPath))
|
||||
{
|
||||
return builder
|
||||
.Skip("No stored checkpoint found")
|
||||
.WithEvidence("Checkpoint", eb => eb
|
||||
.Add("CheckpointPath", checkpointPath)
|
||||
.Add("Exists", "false")
|
||||
.Add("Note", "Checkpoint will be created on first verification run"))
|
||||
.Build();
|
||||
}
|
||||
|
||||
try
|
||||
{
|
||||
// Read stored checkpoint
|
||||
var checkpointJson = await File.ReadAllTextAsync(checkpointPath, ct);
|
||||
StoredCheckpoint? storedCheckpoint;
|
||||
|
||||
try
|
||||
{
|
||||
storedCheckpoint = JsonSerializer.Deserialize<StoredCheckpoint>(checkpointJson);
|
||||
}
|
||||
catch (JsonException ex)
|
||||
{
|
||||
return builder
|
||||
.Fail($"Invalid checkpoint file: {ex.Message}")
|
||||
.WithEvidence("Checkpoint", eb => eb
|
||||
.Add("CheckpointPath", checkpointPath)
|
||||
.Add("Error", "Failed to parse checkpoint JSON"))
|
||||
.WithRemediation(rb => rb
|
||||
.AddStep(1, "Remove corrupted checkpoint",
|
||||
$"rm {checkpointPath}",
|
||||
CommandType.Shell)
|
||||
.AddStep(2, "Trigger re-sync",
|
||||
"stella attestor transparency sync",
|
||||
CommandType.Shell))
|
||||
.WithVerification($"stella doctor --check {CheckId}")
|
||||
.Build();
|
||||
}
|
||||
|
||||
if (storedCheckpoint is null)
|
||||
{
|
||||
return builder
|
||||
.Fail("Checkpoint file is empty")
|
||||
.WithEvidence("Checkpoint", eb => eb
|
||||
.Add("CheckpointPath", checkpointPath))
|
||||
.Build();
|
||||
}
|
||||
|
||||
// Fetch current log state from Rekor
|
||||
var rekorUrl = context.Configuration["Attestor:Rekor:Url"]
|
||||
?? context.Configuration["Transparency:Rekor:Url"]
|
||||
?? "https://rekor.sigstore.dev";
|
||||
|
||||
var httpClientFactory = context.Services.GetRequiredService<IHttpClientFactory>();
|
||||
var httpClient = httpClientFactory.CreateClient("DoctorHealthCheck");
|
||||
httpClient.Timeout = TimeSpan.FromSeconds(10);
|
||||
|
||||
var response = await httpClient.GetAsync(rekorUrl.TrimEnd('/') + "/api/v1/log", ct);
|
||||
|
||||
if (!response.IsSuccessStatusCode)
|
||||
{
|
||||
return builder
|
||||
.Skip("Could not reach Rekor to verify consistency")
|
||||
.WithEvidence("Checkpoint", eb => eb
|
||||
.Add("StoredTreeSize", storedCheckpoint.TreeSize.ToString(CultureInfo.InvariantCulture))
|
||||
.Add("StoredRootHash", storedCheckpoint.RootHash ?? "unknown")
|
||||
.Add("RekorStatus", $"HTTP {(int)response.StatusCode}"))
|
||||
.Build();
|
||||
}
|
||||
|
||||
var logInfoJson = await response.Content.ReadAsStringAsync(ct);
|
||||
using var logInfoDoc = JsonDocument.Parse(logInfoJson);
|
||||
|
||||
long remoteTreeSize = 0;
|
||||
string? remoteRootHash = null;
|
||||
|
||||
if (logInfoDoc.RootElement.TryGetProperty("treeSize", out var treeSizeEl))
|
||||
{
|
||||
remoteTreeSize = treeSizeEl.GetInt64();
|
||||
}
|
||||
if (logInfoDoc.RootElement.TryGetProperty("rootHash", out var rootHashEl))
|
||||
{
|
||||
remoteRootHash = rootHashEl.GetString();
|
||||
}
|
||||
|
||||
// Verify consistency
|
||||
// The remote tree should be >= stored tree (log only grows)
|
||||
if (remoteTreeSize < storedCheckpoint.TreeSize)
|
||||
{
|
||||
return builder
|
||||
.Fail("Remote log is smaller than stored checkpoint (possible fork/rollback)")
|
||||
.WithEvidence("Consistency check", eb => eb
|
||||
.Add("StoredTreeSize", storedCheckpoint.TreeSize.ToString(CultureInfo.InvariantCulture))
|
||||
.Add("RemoteTreeSize", remoteTreeSize.ToString(CultureInfo.InvariantCulture))
|
||||
.Add("StoredRootHash", storedCheckpoint.RootHash ?? "unknown")
|
||||
.Add("RemoteRootHash", remoteRootHash ?? "unknown"))
|
||||
.WithCauses(
|
||||
"Transparency log was rolled back (CRITICAL)",
|
||||
"Stored checkpoint is from a different log",
|
||||
"Man-in-the-middle attack on log queries")
|
||||
.WithRemediation(rb => rb
|
||||
.AddStep(1, "CRITICAL: This may indicate log tampering. Investigate immediately.",
|
||||
"# Do not dismiss this warning without investigation",
|
||||
CommandType.Comment)
|
||||
.AddStep(2, "Verify you are connecting to the correct Rekor instance",
|
||||
$"curl -s {rekorUrl}/api/v1/log | jq .",
|
||||
CommandType.Shell)
|
||||
.AddStep(3, "Check stored checkpoint",
|
||||
$"cat {checkpointPath} | jq .",
|
||||
CommandType.Shell)
|
||||
.AddStep(4, "If using wrong log, reset checkpoint",
|
||||
$"rm {checkpointPath} && stella attestor transparency sync",
|
||||
CommandType.Shell))
|
||||
.WithVerification($"stella doctor --check {CheckId}")
|
||||
.Build();
|
||||
}
|
||||
|
||||
// If tree sizes match, root hashes should match
|
||||
if (remoteTreeSize == storedCheckpoint.TreeSize &&
|
||||
!string.IsNullOrEmpty(remoteRootHash) &&
|
||||
!string.IsNullOrEmpty(storedCheckpoint.RootHash) &&
|
||||
remoteRootHash != storedCheckpoint.RootHash)
|
||||
{
|
||||
return builder
|
||||
.Fail("Root hash mismatch at same tree size (possible tampering)")
|
||||
.WithEvidence("Consistency check", eb => eb
|
||||
.Add("TreeSize", storedCheckpoint.TreeSize.ToString(CultureInfo.InvariantCulture))
|
||||
.Add("StoredRootHash", storedCheckpoint.RootHash)
|
||||
.Add("RemoteRootHash", remoteRootHash))
|
||||
.WithCauses(
|
||||
"Transparency log was modified (CRITICAL)",
|
||||
"Man-in-the-middle attack",
|
||||
"Checkpoint corruption")
|
||||
.WithRemediation(rb => rb
|
||||
.AddStep(1, "CRITICAL: This indicates possible log tampering. Investigate immediately.",
|
||||
"# Do not dismiss this warning without investigation",
|
||||
CommandType.Comment)
|
||||
.AddStep(2, "Compare with independent source",
|
||||
"curl -s https://rekor.sigstore.dev/api/v1/log | jq .",
|
||||
CommandType.Shell))
|
||||
.WithVerification($"stella doctor --check {CheckId}")
|
||||
.Build();
|
||||
}
|
||||
|
||||
var entriesBehind = remoteTreeSize - storedCheckpoint.TreeSize;
|
||||
|
||||
return builder
|
||||
.Pass("Transparency log is consistent")
|
||||
.WithEvidence("Consistency check", eb => eb
|
||||
.Add("StoredTreeSize", storedCheckpoint.TreeSize.ToString(CultureInfo.InvariantCulture))
|
||||
.Add("RemoteTreeSize", remoteTreeSize.ToString(CultureInfo.InvariantCulture))
|
||||
.Add("EntriesBehind", entriesBehind.ToString(CultureInfo.InvariantCulture))
|
||||
.Add("CheckpointAge", storedCheckpoint.UpdatedAt?.ToString("o") ?? "unknown")
|
||||
.Add("ConsistencyVerified", "true"))
|
||||
.Build();
|
||||
}
|
||||
catch (Exception ex)
|
||||
{
|
||||
return builder
|
||||
.Warn($"Failed to verify consistency: {ex.Message}")
|
||||
.WithEvidence("Error", eb => eb
|
||||
.Add("Exception", ex.GetType().Name)
|
||||
.Add("Message", ex.Message))
|
||||
.Build();
|
||||
}
|
||||
}
|
||||
|
||||
private sealed class StoredCheckpoint
|
||||
{
|
||||
public long TreeSize { get; set; }
|
||||
public string? RootHash { get; set; }
|
||||
public DateTimeOffset? UpdatedAt { get; set; }
|
||||
public string? LogId { get; set; }
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,22 @@
|
||||
<Project Sdk="Microsoft.NET.Sdk">
|
||||
|
||||
<PropertyGroup>
|
||||
<TargetFramework>net10.0</TargetFramework>
|
||||
<ImplicitUsings>enable</ImplicitUsings>
|
||||
<Nullable>enable</Nullable>
|
||||
<LangVersion>preview</LangVersion>
|
||||
<TreatWarningsAsErrors>true</TreatWarningsAsErrors>
|
||||
<RootNamespace>StellaOps.Doctor.Plugin.Attestor</RootNamespace>
|
||||
<Description>Attestation and Rekor verification checks for Stella Ops Doctor diagnostics</Description>
|
||||
</PropertyGroup>
|
||||
|
||||
<ItemGroup>
|
||||
<ProjectReference Include="..\..\..\__Libraries\StellaOps.Doctor\StellaOps.Doctor.csproj" />
|
||||
<ProjectReference Include="..\..\..\Attestor\StellaOps.Attestor\StellaOps.Attestor.Core\StellaOps.Attestor.Core.csproj" />
|
||||
</ItemGroup>
|
||||
|
||||
<ItemGroup>
|
||||
<PackageReference Include="Microsoft.Extensions.Http" />
|
||||
</ItemGroup>
|
||||
|
||||
</Project>
|
||||
Reference in New Issue
Block a user