USN-3486-1: Samba vulnerabilities

21 November 2017

samba vulnerabilities

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

  • Ubuntu 17.10
  • Ubuntu 17.04
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in Samba.

Software Description

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

Details

Yihan Lian and Zhibin Hu discovered that Samba incorrectly handled memory when processing certain SMB1 requests. A remote attacker could possibly use this issue to execute arbitrary code. (CVE-2017-14746)

Volker Lendecke discovered that Samba incorrectly cleared memory when returning data to a client. A remote attacker could possibly use this issue to obtain sensitive information. (CVE-2017-15275)

Update instructions

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

Ubuntu 17.10
samba - 2:4.6.7+dfsg-1ubuntu3.1
Ubuntu 17.04
samba - 2:4.5.8+dfsg-0ubuntu0.17.04.8
Ubuntu 16.04 LTS
samba - 2:4.3.11+dfsg-0ubuntu0.16.04.12
Ubuntu 14.04 LTS
samba - 2:4.3.11+dfsg-0ubuntu0.14.04.13

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