=========================================================================Ubuntu Security Notice USN-2091-1
January 29, 2014

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

- Ubuntu 12.04 LTS

Summary:

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

Details:

This update disables the OTR v1 protocol to prevent protocol downgrade
attacks.

Update instructions:

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

Ubuntu 12.04 LTS:
  libotr2                         3.2.0-4ubuntu0.2

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

References:
  
  https://bugs.launchpad.net/ubuntu/+source/libotr/+bug/1266016

Package Information:
  https://launchpad.net/ubuntu/+source/libotr/3.2.0-4ubuntu0.2