A buffer overflow has been found in Samba that requires immediate action, the team's Jeremy Allison tells us.

Samba is the most-widely used software that allows access Windows networks from non-Windows clients. If you're running a Samba server version 2.0 or higher, you urgently need to install the latest version 2.2.8, or block access to TCP ports 139 and 445. Code that exploits the hole - which gives a potential attacker root privileges has already been created by the black hat Community.

Version 2.2.8 source can be found here, and binaries here.

You can find more information in this posting. ®