CVE-2011-4122
Description
Directory traversal vulnerability in openpam_configure.c in OpenPAM before r478 on FreeBSD 8.1 allows local users to load arbitrary DSOs and gain privileges via a .. (dot dot) in the service_name argument to the pam_start function, as demonstrated by a .. in the -c option to kcheckpass.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
OpenPAM - 'pam_start()' Local Privilege Escalation
OS impact
FreeBSD Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| 8.1 | Affected | — |
References
- http://c-skills.blogspot.com/2011/11/openpam-trickery.html
- http://openwall.com/lists/oss-security/2011/12/07/3
- http://openwall.com/lists/oss-security/2011/12/08/9
- http://osvdb.org/76945
- http://secunia.com/advisories/46756
- http://secunia.com/advisories/46804
- http://stealth.openwall.net/xSports/pamslam
- http://trac.des.no/openpam/changeset/478/trunk/lib/openpam_configure.c
- https://exchange.xforce.ibmcloud.com/vulnerabilities/71205
- http://c-skills.blogspot.com/2011/11/openpam-trickery.html
- http://openwall.com/lists/oss-security/2011/12/07/3
- http://openwall.com/lists/oss-security/2011/12/08/9
- http://osvdb.org/76945
- http://secunia.com/advisories/46756
- http://secunia.com/advisories/46804
- http://stealth.openwall.net/xSports/pamslam
- http://trac.des.no/openpam/changeset/478/trunk/lib/openpam_configure.c
- https://exchange.xforce.ibmcloud.com/vulnerabilities/71205
CWEs
CWE-22
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.