Vulnerability Description
boneIO Black contains a TOCTOU race condition in the create_timedatectl_sudoers_file() function in boneio/webui/routes/timezone_sudoers.py. The function writes sudoers rules to a predictable temporary file, validates them, then installs them with root privileges. A local attacker can exploit the race window between validation and installation to substitute malicious content, or use the predictable filename for symlink attacks, resulting in arbitrary sudoers rule injection and local privilege escalation to root. This issue was fixed in version 1.6.0.
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-77059?
CVE-2026-77059 is a documented vulnerability. boneIO Black contains a TOCTOU race condition in the create_timedatectl_sudoers_file() function in boneio/webui/routes/timezone_sudoers.py. The function writes sudoers rules to a predictable temporary...
How severe is CVE-2026-77059?
CVSS scoring is not yet available for CVE-2026-77059. Check NVD for updates.
Is there a patch for CVE-2026-77059?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.