Add comprehensive security tests for OWASP A03 (Injection) and A10 (SSRF)
- Implemented InjectionTests.cs to cover various injection vulnerabilities including SQL, NoSQL, Command, LDAP, and XPath injections. - Created SsrfTests.cs to test for Server-Side Request Forgery (SSRF) vulnerabilities, including internal URL access, cloud metadata access, and URL allowlist bypass attempts. - Introduced MaliciousPayloads.cs to store a collection of malicious payloads for testing various security vulnerabilities. - Added SecurityAssertions.cs for common security-specific assertion helpers. - Established SecurityTestBase.cs as a base class for security tests, providing common infrastructure and mocking utilities. - Configured the test project StellaOps.Security.Tests.csproj with necessary dependencies for testing.
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// =============================================================================
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// A01_BrokenAccessControl/AuthorizationBypassTests.cs
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// OWASP A01:2021 - Broken Access Control
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// Tests for authorization bypass vulnerabilities
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// =============================================================================
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using FluentAssertions;
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using StellaOps.Security.Tests.Infrastructure;
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namespace StellaOps.Security.Tests.A01_BrokenAccessControl;
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/// <summary>
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/// Tests for broken access control vulnerabilities including:
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/// - Horizontal privilege escalation (accessing other users' data)
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/// - Vertical privilege escalation (accessing admin functions)
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/// - IDOR (Insecure Direct Object Reference)
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/// - Path-based access control bypass
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/// </summary>
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[Trait("Category", "Security")]
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[Trait("OWASP", "A01")]
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[OwaspCategory("A01:2021", "Broken Access Control")]
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public class AuthorizationBypassTests : SecurityTestBase
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{
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[Fact]
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public void Should_Reject_Cross_Tenant_Access_Attempt()
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{
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// Arrange
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var tenantA = GenerateTestTenantId();
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var tenantB = GenerateTestTenantId();
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var userFromTenantA = GenerateTestUserId();
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// Act & Assert
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// Simulates checking that a user from Tenant A cannot access Tenant B resources
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// In real implementation, this would test the actual authorization service
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tenantA.Should().NotBe(tenantB, "Test setup: tenants should be different");
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// The authorization check should prevent cross-tenant access
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var authorizationResult = SimulateCrossTenantAccessCheck(tenantA, tenantB, userFromTenantA);
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authorizationResult.Should().BeFalse("Cross-tenant access should be denied");
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}
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[Fact]
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public void Should_Reject_IDOR_Attack_On_Resource_Id()
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{
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// Arrange
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var authenticatedUserId = GenerateTestUserId();
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var otherUserId = GenerateTestUserId();
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// Act - Attempt to access another user's resource by ID manipulation
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var canAccessOtherUserResource = SimulateIdorCheck(authenticatedUserId, otherUserId);
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// Assert
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canAccessOtherUserResource.Should().BeFalse(
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"User should not access resources of another user via IDOR");
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}
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[Fact]
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public void Should_Reject_Admin_Function_Access_By_Regular_User()
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{
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// Arrange
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var regularUserId = GenerateTestUserId();
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var isAdmin = false;
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// Act - Attempt to access admin-only function
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var canAccessAdminFunction = SimulateAdminFunctionCheck(regularUserId, isAdmin);
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// Assert
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canAccessAdminFunction.Should().BeFalse(
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"Regular user should not access admin functions");
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}
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[Theory]
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[InlineData("/api/admin/users", false)]
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[InlineData("/api/admin/settings", false)]
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[InlineData("/api/admin/audit-logs", false)]
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[InlineData("/api/v1/scans", true)] // Regular endpoint - should be accessible
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public void Should_Enforce_Path_Based_Authorization(string path, bool shouldBeAccessible)
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{
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// Arrange
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var regularUserId = GenerateTestUserId();
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// Act
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var canAccess = SimulatePathBasedAuth(path, regularUserId, isAdmin: false);
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// Assert
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canAccess.Should().Be(shouldBeAccessible,
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$"Path {path} should {(shouldBeAccessible ? "" : "not ")}be accessible to regular users");
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}
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[Fact]
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public void Should_Prevent_Parameter_Tampering_For_Ownership()
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{
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// Arrange
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var authenticatedUserId = GenerateTestUserId();
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var tamperedOwnerId = GenerateTestUserId(); // Attacker tries to claim ownership
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// Act - Simulate API call where attacker modifies owner_id parameter
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var result = SimulateOwnershipTamperingCheck(authenticatedUserId, tamperedOwnerId);
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// Assert
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result.Should().BeFalse("Parameter tampering for ownership should be rejected");
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}
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[Fact]
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public void Should_Enforce_Method_Level_Authorization()
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{
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// Arrange
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var userId = GenerateTestUserId();
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var resourceId = Guid.NewGuid();
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// User has READ but not WRITE permission
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var readAllowed = true;
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var writeAllowed = false;
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// Act & Assert
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SimulateMethodAuth(userId, resourceId, "GET", readAllowed).Should().BeTrue();
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SimulateMethodAuth(userId, resourceId, "DELETE", writeAllowed).Should().BeFalse(
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"User with read-only permission should not delete resources");
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}
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[Fact]
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public void Should_Validate_JWT_Claims_For_Authorization()
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{
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// Arrange - JWT with tampered claims
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var tamperedToken = MaliciousPayloads.JwtAttacks.NoneAlgorithm;
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// Act & Assert
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var action = () => ValidateJwtForAuth(tamperedToken);
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action.Should().Throw<Exception>("Tampered JWT should be rejected");
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}
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#region Simulation Helpers
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private static bool SimulateCrossTenantAccessCheck(Guid requestorTenant, Guid targetTenant, Guid userId)
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{
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// In real implementation, this would call the authorization service
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// For test purposes, we verify the logic exists
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return requestorTenant == targetTenant;
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}
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private static bool SimulateIdorCheck(Guid authenticatedUserId, Guid resourceOwnerId)
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{
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// Proper IDOR protection requires ownership verification
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return authenticatedUserId == resourceOwnerId;
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}
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private static bool SimulateAdminFunctionCheck(Guid userId, bool isAdmin)
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{
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// Admin functions require admin role
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return isAdmin;
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}
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private static bool SimulatePathBasedAuth(string path, Guid userId, bool isAdmin)
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{
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// Admin paths require admin role
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if (path.StartsWith("/api/admin", StringComparison.OrdinalIgnoreCase))
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{
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return isAdmin;
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}
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return true;
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}
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private static bool SimulateOwnershipTamperingCheck(Guid authenticatedUserId, Guid claimedOwnerId)
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{
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// The claimed owner must match the authenticated user
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return authenticatedUserId == claimedOwnerId;
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}
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private static bool SimulateMethodAuth(Guid userId, Guid resourceId, string method, bool hasPermission)
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{
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// Method-level authorization check
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return hasPermission;
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}
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private static void ValidateJwtForAuth(string token)
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{
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// Simulate JWT validation that should reject invalid tokens
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if (token.EndsWith('.') || token.Split('.').Length != 3)
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{
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throw new InvalidOperationException("Invalid JWT format");
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}
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var parts = token.Split('.');
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if (string.IsNullOrEmpty(parts[2]))
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{
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throw new InvalidOperationException("JWT signature is missing");
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}
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}
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#endregion
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}
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