copilot-swe-agent[bot]
348cc7f7ac
Co-authored-by: thedotmack <683968+thedotmack@users.noreply.github.com>
72 lines
2.5 KiB
Markdown
72 lines
2.5 KiB
Markdown
# Security Summary - CWD Context Fix
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## Security Scan Results
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### CodeQL Analysis
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- **Status**: ✅ PASSED
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- **Vulnerabilities Found**: 0
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- **Language**: JavaScript
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- **Scan Date**: 2025-11-10
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## Security Considerations
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### 1. Input Validation
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The `cwd` field is treated as untrusted user input:
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- ✅ Optional field (`cwd?: string`) - missing values default to empty string
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- ✅ No direct file system operations using CWD
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- ✅ CWD is only used for context in prompts (read-only)
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- ✅ No shell command injection risk (not passed to exec/spawn)
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### 2. Data Flow Security
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```
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Hook Input → Worker API → SessionManager → SDK Agent → Prompt Text
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```
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- ✅ CWD passed through JSON serialization (escaped)
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- ✅ No SQL injection risk (not stored in database)
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- ✅ No XSS risk (used in backend prompts, not web UI)
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- ✅ No path traversal risk (not used for file operations)
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### 3. Prompt Injection Considerations
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The CWD is included in XML prompts sent to the SDK agent:
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```xml
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<tool_cwd>/home/user/project</tool_cwd>
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```
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**Risk Assessment**: LOW
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- CWD comes from Claude Code runtime (trusted source)
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- Claude Code validates and sanitizes session context
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- SDK agent operates in isolated subprocess
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- No user-controlled prompt injection vector
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### 4. Backward Compatibility
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- ✅ Optional field - no breaking changes
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- ✅ Graceful degradation when CWD missing
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- ✅ No changes to existing security boundaries
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- ✅ No new external dependencies
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## Security Best Practices Applied
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1. **Defense in Depth**: CWD is display-only context, not used for authorization
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2. **Least Privilege**: No elevated permissions required
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3. **Input Validation**: Type-safe interfaces with optional fields
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4. **Safe Defaults**: Missing CWD defaults to empty string (safe)
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5. **Immutability**: CWD is read-only once extracted from hook input
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## Potential Future Considerations
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While the current implementation is secure, future enhancements should consider:
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1. **Path Sanitization**: If CWD is ever used for file operations, implement strict path validation
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2. **Length Limits**: Consider max length for CWD field to prevent buffer issues
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3. **Allowlist**: If needed, implement allowlist of permitted directories
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4. **Audit Logging**: Log CWD values for security monitoring (if required)
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## Conclusion
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✅ **No security vulnerabilities identified**
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✅ **Implementation follows security best practices**
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✅ **Ready for production deployment**
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The CWD context fix introduces no new security risks and maintains the existing security posture of the claude-mem plugin.
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