USN-3296-1: Samba vulnerability

24 May 2017

samba vulnerability

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

  • Ubuntu 17.04
  • Ubuntu 16.10
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

Samba could be made to run programs as an administrator.

Software Description

  • samba - SMB/CIFS file, print, and login server for Unix

Details

It was discovered that Samba incorrectly handled shared libraries. A remote attacker could use this flaw to upload a shared library to a writable share and execute arbitrary code.

Update instructions

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

Ubuntu 17.04
samba - 2:4.5.8+dfsg-0ubuntu0.17.04.2
Ubuntu 16.10
samba - 2:4.4.5+dfsg-2ubuntu5.6
Ubuntu 16.04 LTS
samba - 2:4.3.11+dfsg-0ubuntu0.16.04.7
Ubuntu 14.04 LTS
samba - 2:4.3.11+dfsg-0ubuntu0.14.04.8

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