ID:4375 - Exploit for Path traversal in FreeBSD - CVE-2011-4122

Link to public exploit:

Vulnerability description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in openpam_configure.c in OpenPAM before r478 on FreeBSD 8.1. A remote authenticated attacker can send a specially crafted HTTP request and 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.

Remediation