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.
https://exchange.xforce.ibmcloud.com/vulnerabilities/71205
http://trac.des.no/openpam/changeset/478/trunk/lib/openpam_configure.c
http://stealth.openwall.net/xSports/pamslam
http://secunia.com/advisories/46804
http://secunia.com/advisories/46756