Judge0 vulnerable to Sandbox Escape Patch Bypass via chown running on Symbolic Link
Vulnerability Description
Judge0 is an open-source online code execution system. The application uses the UNIX chown command on an untrusted file within the sandbox. An attacker can abuse this by creating a symbolic link (symlink) to a file outside the sandbox, allowing the attacker to run chown on arbitrary files outside of the sandbox. This vulnerability is not impactful on it's own, but it can be used to bypass the patch for CVE-2024-28185 and obtain a complete sandbox escape. This vulnerability is fixed in 1.13.1.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://github.com/judge0/judge0/security/advisories/GHSA-3xpw-36v7-2cmg
- https://github.com/judge0/judge0/security/advisories/GHSA-h9g2-45c8-89cf
- https://github.com/judge0/judge0/commit/f3b8547b3b67863e4ea0ded3adcb963add56addd
- https://github.com/judge0/judge0/blob/v1.13.0/app/jobs/isolate_job.rb#L232
Affected Vendor
judge0
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