In OpenBSD 6.6, local users can use the su -L option to achieve any login class (often excluding root) because there is a logic error in the main function in su/su.c.
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
| Link | Tags |
|---|---|
| https://www.openwall.com/lists/oss-security/2019/12/04/5 | mailing list third party advisory exploit |
| https://www.openbsd.org/errata66.html | vendor advisory |
| https://github.com/openbsd/src/blob/2dfc98f42e117c7605b52b5020b630d98601dc22/usr.bin/su/su.c#L210-L211 | third party advisory |
| http://www.openwall.com/lists/oss-security/2019/12/04/5 | mailing list third party advisory exploit |
| https://seclists.org/bugtraq/2019/Dec/8 | mailing list third party advisory exploit |
| 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 |