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:
22 May 2007
A security issue affects these releases of Ubuntu and its derivatives:
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)
The problem can be corrected by updating your system to the following package versions:
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.
Vulmon