USN-3976-4: Samba vulnerability

USN-3976-4: Samba vulnerability

samba vulnerability

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

• Ubuntu 14.04 ESM

Summary

USN-3876-1 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.

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 14.04 ESM

samba – 2:4.3.11+dfsg-0ubuntu0.14.04.20+esm2

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

• USN-3976-1
• LP: 1827924

Source: USN-3976-4: Samba vulnerability