USN-1226-2: cifs-utils vulnerabilities

4 October 2011

cifs-utils vulnerabilities

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

  • Ubuntu 11.04
  • Ubuntu 10.10

Summary

An attacker could trick cifs-utils into corrupting the system mtab file.

Software Description

  • cifs-utils - Common Internet File System utilities

Details

Dan Rosenberg discovered that cifs-utils 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 cifs-utils 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. (CVE-2011-2724)

Update instructions

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

Ubuntu 11.04
smbfs - 2:4.5-2ubuntu0.11.04.1
Ubuntu 10.10
smbfs - 2:4.5-2ubuntu0.10.10.1

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