USN-2091-1: OTR vulnerabilities

Ubuntu Security Notice USN-2091-1

29th January, 2014

libotr vulnerabilities

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

  • Ubuntu 12.04 LTS


Applications using the OTR secure chat protocol could be made to expose sensitive information over the network.

Software description

  • libotr - Off-the-Record Messaging library


This update disables the OTR v1 protocol to prevent protocol downgrade

Update instructions

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

Ubuntu 12.04 LTS:
libotr2 3.2.0-4ubuntu0.2

To update your system, please follow these instructions:

After a standard system update you need to restart OTR applications to
make all the necessary changes.


LP: 1266016