Vulnerability CVE-2024-28189
Published: 2024-04-18

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.

 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
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