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CVE-2007-0166

Status Candidate

Overview

The jail rc.d script in FreeBSD 5.3 up to 6.2 does not verify pathnames when writing to /var/log/console.log during a jail start-up, or when file systems are mounted or unmounted, which allows local root users to overwrite arbitrary files, or mount/unmount files, outside of the jail via a symlink attack.

Related Files

FreeBSD-SA-07-01.jail.txt
Posted Aug 8, 2007
Site security.freebsd.org

FreeBSD Security Advisory - Due to the lack of handling of potential symbolic links the host's jail rc.d(8) script is vulnerable to "symlink attacks". By replacing /var/log/console.log inside the jail with a symbolic link it is possible for the superuser (root) inside the jail to overwrite files on the host system outside the jail with arbitrary content. This in turn can be used to execute arbitrary commands with non-jailed superuser privileges.

tags | advisory, arbitrary, root
systems | freebsd
advisories | CVE-2007-0166
SHA-256 | 028e10620eb9d9c3fa9a15f2a25d7e04e9c45a57e7eaee8470108c46f4ed4e43
FreeBSD-SA-07.01.jail.txt
Posted Jan 14, 2007
Authored by Dirk Engling | Site security.freebsd.org

FreeBSD Security Advisory - jail(2) is susceptible to a symlink related vulnerability due to a lack of sanity checking.

tags | advisory
systems | freebsd
advisories | CVE-2007-0166
SHA-256 | 67718e9c6c514fdd36e62fe2606ff687a4feed8cb51383a05dc3595135aae050
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