USN-3976-3: Samba regression
samba regression
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary
USN-3976-1 introduced a regression in Samba.
Software Description
- samba – SMB/CIFS file, print, and login server for Unix
Details
USN-3976-1 fixed a vulnerability in Samba. The update introduced a
regression causing Samba to occasionally crash. This update fixes the
problem.
We apologize for the inconvenience.
Original advisory details:
Isaac Boukris and Andrew Bartlett discovered that Samba incorrectly checked
S4U2Self packets. In certain environments, a remote attacker could possibly
use this issue to escalate privileges.
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 18.04 LTS
- samba – 2:4.7.6+dfsg~ubuntu-0ubuntu2.11
- Ubuntu 16.04 LTS
- samba – 2:4.3.11+dfsg-0ubuntu0.16.04.21
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
Source: USN-3976-3: Samba regression
Leave a Reply