Ubuntu Security Notice USN-987-1
14th September, 2010
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
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.
The problem can be corrected by updating your system to the following package version:
- 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.