USN-3976-3: Samba regression
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 [ more… ]