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Code interpreter sandbox escape (#4791)
* [SECURITY] Fix sandbox escape vulnerability in CodeInterpreterTool (F-001)

This commit addresses a critical security vulnerability where the CodeInterpreterTool
could be exploited via sandbox escape attacks when Docker was unavailable.

Changes:
- Remove insecure fallback to restricted sandbox in run_code_safety()
- Now fails closed with RuntimeError when Docker is unavailable
- Mark run_code_in_restricted_sandbox() as deprecated and insecure
- Add clear security warnings to SandboxPython class documentation
- Update tests to reflect secure-by-default behavior
- Add test demonstrating the sandbox escape vulnerability
- Update README with security requirements and best practices

The previous implementation would fall back to a Python-based 'restricted sandbox'
when Docker was unavailable. However, this sandbox could be easily bypassed using
Python object introspection to recover the original __import__ function, allowing
arbitrary module access and command execution on the host.

The fix enforces Docker as a requirement for safe code execution. Users who cannot
use Docker must explicitly enable unsafe_mode=True, acknowledging the security risks.

Security Impact:
- Prevents RCE via sandbox escape when Docker is unavailable
- Enforces fail-closed security model
- Maintains backward compatibility via unsafe_mode flag

References:
- https://docs.crewai.com/tools/ai-ml/codeinterpretertool

Co-authored-by: Rip&Tear <theCyberTech@users.noreply.github.com>

* Add security fix documentation for F-001

Co-authored-by: Rip&Tear <theCyberTech@users.noreply.github.com>

* Add Slack summary for security fix

Co-authored-by: Rip&Tear <theCyberTech@users.noreply.github.com>

* Delete SECURITY_FIX_F001.md

* Delete SLACK_SUMMARY.md

* chore: regen cassettes

* chore: regen more cassettes

* Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Cursor Agent <cursoragent@cursor.com>
Co-authored-by: Rip&Tear <theCyberTech@users.noreply.github.com>
Co-authored-by: Greyson LaLonde <greyson@crewai.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
2026-03-15 13:18:02 +08:00

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