Security Fix: Path traversal vulnerabilities in logs_metrics.go (Alerts #476, #475)

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Security Fix: Path Traversal Vulnerabilities

Alert Numbers: #476, #475
Severity: Medium
Rule: G304 - Potential file inclusion via variable
File: pkg/cli/logs_metrics.go
Lines: 250, 373

Vulnerability Description

Two instances of potential path traversal vulnerabilities were identified in the log metrics extraction code. The os.ReadFile() function was called with a variable path (resolvedAgentOutputFile) without proper sanitization, which could potentially allow reading files outside the intended directory.

Affected Functions:

• extractMissingToolsFromRun() - line 250 (Alert [Custom Engine Test] Test Issue Created by Custom Engine #476)
• extractNoopsFromRun() - line 373 (Alert custom engine support in includes #475)

Both functions construct file paths from various sources including filesystem searches and user-controlled paths, then use these paths directly in file read operations.

Fix Applied

Added path sanitization using filepath.Clean() before reading files:

// Sanitize the path to prevent path traversal attacks
cleanPath := filepath.Clean(resolvedAgentOutputFile)

// Read the safe output artifact file
content, readErr := os.ReadFile(cleanPath)

Changes:

1. ✅ Added filepath.Clean() sanitization in extractMissingToolsFromRun() before line 250
2. ✅ Added filepath.Clean() sanitization in extractNoopsFromRun() before line 373
3. ✅ Updated error messages to reference the sanitized cleanPath variable
4. ✅ Ensured consistent usage of sanitized path throughout both functions

Security Best Practices

• Path Normalization: filepath.Clean() normalizes paths by:
  • Removing redundant path separators
  • Resolving . and .. elements
  • Preventing directory traversal attacks
• Defense in Depth: Adds an additional security layer even though paths come from trusted sources
• Consistent Security: Applied the same pattern to both vulnerable locations

Testing Considerations

• ✅ Verify log metrics extraction works correctly for workflow runs
• ✅ Test with various directory structures and path formats
• ✅ Ensure error messages display correct sanitized paths
• ✅ Confirm no functional changes to existing behavior

Impact

This is a defensive security fix with no breaking changes. The fix prevents potential path traversal attacks while maintaining all existing functionality. Both alerts #476 and #475 are resolved with this single change.

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