Ubuntu Security Notice USN-1226-1
October 04, 2011
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS
An attacker could trick Samba into corrupting the system mtab file.
- samba: SMB/CIFS file, print, and login server for Unix
Dan Rosenberg discovered that Samba incorrectly handled changes to the mtab
file. A local attacker could use this issue to corrupt the mtab file,
possibly leading to a denial of service. (CVE-2011-1678)
Jan Lieskovsky discovered that Samba incorrectly filtered certain strings
being added to the mtab file. A local attacker could use this issue to
corrupt the mtab file, possibly leading to a denial of service. This issue
only affected Ubuntu 10.04 LTS. (CVE-2011-2724)
Dan Rosenberg discovered that Samba incorrectly handled the mtab lock file.
A local attacker could use this issue to create a stale lock file, possibly
leading to a denial of service. (CVE-2011-3585)
The problem can be corrected by updating your system to the following
Ubuntu 10.04 LTS:
Ubuntu 8.04 LTS:
In general, a standard system update will make all the necessary changes.
CVE-2011-1678, CVE-2011-2724, CVE-2011-3585