USN-3353-4: Samba vulnerability

Ubuntu Security Notice USN-3353-4

24th July, 2017

samba vulnerability

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

  • Ubuntu 12.04 LTS

Summary

Samba could allow unintended access to network services.

Software description

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

Details

USN-3353-1 fixed a vulnerability in Heimdal. This update provides the corresponding update for Samba.

Original advisory details:

Jeffrey Altman, Viktor Dukhovni, and Nicolas Williams discovered
that Samba clients incorrectly trusted unauthenticated portions
of Kerberos tickets. A remote attacker could use this to impersonate
trusted network services or perform other attacks.

Update instructions

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

Ubuntu 12.04 LTS:
libsmbclient 2:3.6.25-0ubuntu0.12.04.12

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

CVE-2017-11103