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.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- OpenPAM - 'pam_start()' Local Privilege Escalation EDB-36296 · local · Nov 9, 2011 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- http://stealth.openwall.net/xSports/pamslam
- 46756 third-party-advisory
- [oss-security] 20111207 Disputing CVE-2011-4122 mailing-list
- http://trac.des.no/openpam/changeset/478/trunk/lib/openpam_configure.c
- openpam-Pamstart-privilege-escalation(71205) vdb-entry
- 76945 vdb-entry
- http://c-skills.blogspot.com/2011/11/openpam-trickery.html
- [oss-security] 20111208 Re: Disputing CVE-2011-4122 mailing-list
- 46804 third-party-advisory