CyberRota Analysis
AI-GeneratedA vulnerability in sudo allows unprivileged local users to manipulate time-based access restrictions by setting the TZ environment variable to an extreme offset, potentially extending the validity of expired sudoers rules by up to 25 hours. This flaw enables unauthorized command execution outside the intended time window, although it does not bypass authentication. Organizations using sudo with time-based access controls should prioritize patching this vulnerability to mitigate the risk of unauthorized access.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
A flaw was found in sudo. When sudoers rules use NOTBEFORE or NOTAFTER time-based access restrictions with timestamps that omit the trailing 'Z' timezone indicator, the time evaluation relies on the TZ environment variable inherited from the calling user. Because sudo is a setuid-root program, an unprivileged local user can set TZ to an extreme timezone offset to shift the authorization window by up to approximately 25 hours, causing expired rules to be treated as valid. This allows the user to execute commands outside the intended time window. Authentication is not bypassed; only the time-based authorization check is affected.