USN-460-2: Samba regression

22 May 2007

samba regression

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

  • Ubuntu 7.04

Software Description

Details

USN-460-1 fixed several vulnerabilities in Samba. The upstream changes for CVE-2007-2444 had an unexpected side-effect in Feisty. Shares configured with the “force group” option no longer behaved correctly.
This update corrects the problem. We apologize for the inconvenience.

Original advisory details:

Paul Griffith and Andrew Hogue discovered that Samba did not fully drop root privileges while translating SIDs. A remote authenticated user could issue SMB operations during a small window of opportunity and gain root privileges. (CVE-2007-2444)

Update instructions

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

Ubuntu 7.04
samba - 3.0.24-2ubuntu1.2

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

In general, a standard system upgrade is sufficient to effect the necessary changes.

References