USN-987-1: Samba vulnerability

14 September 2010

samba vulnerability

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

  • Ubuntu 10.04 LTS
  • Ubuntu 9.10
  • Ubuntu 9.04
  • Ubuntu 8.04 LTS
  • Ubuntu 6.06 LTS

Summary

Software Description

  • samba

Details

Andrew Bartlett discovered that Samba did not correctly validate the length when parsing SIDs. A remote attacker could send a specially crafted request to the server and cause a denial of service, or possibly execute arbitrary code with the privileges of the Samba service (smbd).

The default compiler options for Ubuntu 8.04 LTS and newer should reduce the vulnerability to a denial of service.

Update instructions

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

Ubuntu 10.04 LTS
samba - 2:3.4.7~dfsg-1ubuntu3.2
Ubuntu 9.10
samba - 2:3.4.0-3ubuntu5.7
Ubuntu 9.04
samba - 2:3.3.2-1ubuntu3.6
Ubuntu 8.04 LTS
samba - 3.0.28a-1ubuntu4.13
Ubuntu 6.06 LTS
samba - 3.0.22-1ubuntu3.13

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References