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USN-2926-1: OTR vulnerability

10 March 2016

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



  • libotr - Off-the-Record Messaging library


Markus Vervier discovered that OTR incorrectly handled large incoming
messages. A remote attacker could use this issue to cause OTR 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 12.04

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