USN-4173-1: FreeTDS vulnerability

30 October 2019

freetds vulnerability

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

  • Ubuntu 19.10
  • Ubuntu 19.04
  • Ubuntu 18.04 LTS

Summary

FreeTDS could be made to crash or run programs if it received specially crafted network traffic.

Software Description

  • freetds - libraries for connecting to MS SQL and Sybase SQL servers

Details

Felix Wilhelm discovered that FreeTDS incorrectly handled certain types after a protocol downgrade. A remote attacker could use this issue to cause FreeTDS to crash, resulting in a denial of service, or possibly execute arbitrary code.

Update instructions

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

Ubuntu 19.10
freetds-bin - 1.1.6-1ubuntu0.1
libct4 - 1.1.6-1ubuntu0.1
libsybdb5 - 1.1.6-1ubuntu0.1
tdsodbc - 1.1.6-1ubuntu0.1
Ubuntu 19.04
freetds-bin - 1.00.104-1ubuntu0.1
libct4 - 1.00.104-1ubuntu0.1
libsybdb5 - 1.00.104-1ubuntu0.1
tdsodbc - 1.00.104-1ubuntu0.1
Ubuntu 18.04 LTS
freetds-bin - 1.00.82-2ubuntu0.1
libct4 - 1.00.82-2ubuntu0.1
libsybdb5 - 1.00.82-2ubuntu0.1
tdsodbc - 1.00.82-2ubuntu0.1

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