The RDS protocol implementation of Linux kernels 2.6.30 through 2.6.38-rc8 contain a local privilege escalation vulnerability.
Kernel functions fail to properly check if a user supplied address exists in the user segment of memory. By providing a kernel address to a socket call an unprivileged user can execute arbitrary code as root. Additional details can be found in the VSR Security Advisory.
An unprivileged local attacker can escalate their privileges to root.
Apply an update for the specific Linux distribution used.
If the RDS protocol is not needed, it can be disabled with the following command run as root.
echo "alias net-pf-21 off" > /etc/modprobe.d/disable-rds``
Vendor| Status| Date Notified| Date Updated
Debian GNU/Linux| | -| 25 Oct 2010
Gentoo Linux| | -| 25 Oct 2010
Red Hat, Inc.| | -| 25 Oct 2010
Slackware Linux Inc.| | -| 25 Oct 2010
Ubuntu| | -| 25 Oct 2010
If you are a vendor and your product is affected, let us know.
Group | Score | Vector
Base | N/A | N/A
Temporal | N/A | N/A
Environmental | N/A | N/A
Thanks to Dan Rosenberg of Virtual Security Research for researching and publishing the details of this vulnerability.
This document was written by Jared Allar.