FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports Collection

CVE-2011-4122

This CVE name corresponds to:

Entered	Topic
2012-01-29	FreeBSD -- pam_ssh() does not validate service names

The following information is adapted from the Common Vulnerabilities and Exposures (CVE) project. CVE and the CVE logo are trademarks of The MITRE Corporation. CVE content is Copyright 2005, The MITRE Corporation.

CVE-2011-4122 at cve.mitre.org

Details

Type	Candidate
Name	CVE-2011-4122
Phase	Assigned(20111018)

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.

References

Source	Reference
MLIST	[oss-security] 20111207 Disputing CVE-2011-4122
MLIST	[oss-security] 20111208 Re: Disputing CVE-2011-4122
MISC	http://c-skills.blogspot.com/2011/11/openpam-trickery.html
MISC	http://stealth.openwall.net/xSports/pamslam
CONFIRM	http://trac.des.no/openpam/changeset/478/trunk/lib/openpam_configure.c
OSVDB	76945
SECUNIA	46756
SECUNIA	46804
XF	openpam-Pamstart-privilege-escalation(71205)