USN-4217-2: Samba vulnerabilities

11 December 2019

samba vulnerabilities

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

  • Ubuntu 14.04 ESM

Summary

Several security issues were fixed in Samba.

Software Description

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

Details

USN-4217-1 fixed several vulnerabilities in Samba. This update provides the corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

Andreas Oster discovered that the Samba DNS management server incorrectly handled certain records. An authenticated attacker could possibly use this issue to crash Samba, resulting in a denial of service. (CVE-2019-14861)

Isaac Boukris discovered that Samba did not enforce the Kerberos DelegationNotAllowed feature restriction, contrary to expectations. (CVE-2019-14870)

Update instructions

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

Ubuntu 14.04 ESM
libsmbclient - 2:4.3.11+dfsg-0ubuntu0.14.04.20+esm4
samba - 2:4.3.11+dfsg-0ubuntu0.14.04.20+esm4

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