USN-1966-1: Samba vulnerability

24 September 2013

samba vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 13.04
  • Ubuntu 12.10
  • Ubuntu 12.04 LTS
  • Ubuntu 10.04 LTS


Samba could be made to hang if it received specially crafted network traffic.

Software Description

  • samba - SMB/CIFS file, print, and login server for Unix


Jeremy Allison discovered that Samba incorrectly handled certain extended attribute lists. A remote attacker could use this issue to cause Samba to hang, resulting in a denial of service.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 13.04
samba - 2:3.6.9-1ubuntu1.1
Ubuntu 12.10
samba - 2:3.6.6-3ubuntu5.2
Ubuntu 12.04 LTS
samba - 2:3.6.3-2ubuntu2.8
Ubuntu 10.04 LTS
samba - 2:3.4.7~dfsg-1ubuntu3.12

To update your system, please follow these instructions:

In general, a standard system update will make all the necessary changes.