Description
OpenBSD 6.6, in a non-default configuration where S/Key or YubiKey authentication is enabled, allows local users to become root by leveraging membership in the auth group. This occurs because root's file can be written to /etc/skey or /var/db/yubikey, and need not be owned by root.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- https://www.openwall.com/lists/oss-security/2019/12/04/5 ↗
- https://www.openbsd.org/errata66.html ↗
- http://www.openwall.com/lists/oss-security/2019/12/04/5 ↗
- https://seclists.org/bugtraq/2019/Dec/8 ↗
- http://packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.html ↗
- http://seclists.org/fulldisclosure/2019/Dec/14 ↗