Title : FreeBSD Security Update Fixes Jail "rc.d" Script Local Privilege Escalation Vulnerability VUPEN ID : VUPEN/ADV-2007-0148 CVE ID : CVE-2007-0166
Rated as : Moderate Risk
Remotely Exploitable : No Locally Exploitable : Yes Release Date : 2007-01-12
Technical Description
FreeBSD has released security updates to address a vulnerability identified in Jail. This issue is due to an error in the jail "rc.d" script that does not check if a path inside the jail file system structure is a symbolic link when writing the output from the jail start-up to "/var/log/console.log" and when mounting and unmounting file systems inside the jail directory structure, which could be exploited by malicious users to conduct symlink attacks and execute arbitrary commands with non-jailed superuser privileges.
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