xlock in OpenBSD 6.6 allows local users to gain the privileges of the auth group by providing a LIBGL_DRIVERS_PATH environment variable, because xenocara/lib/mesa/src/loader/loader.c mishandles dlopen.
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
| Link | Tags |
|---|---|
| https://www.openwall.com/lists/oss-security/2019/12/04/5 | mailing list exploit third party advisory |
| https://www.openbsd.org/errata66.html | vendor advisory |
| http://www.openwall.com/lists/oss-security/2019/12/04/6 | mailing list |
| http://www.openwall.com/lists/oss-security/2019/12/04/5 | mailing list exploit third party advisory |
| https://seclists.org/bugtraq/2019/Dec/8 | mailing list exploit third party advisory |
| http://packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.html | third party advisory |
| http://seclists.org/fulldisclosure/2019/Dec/14 | third party advisory mailing list |