Markus Vervier of X41 D-Sec GmbH discovered an integer overflow
vulnerability in libotr, an off-the-record (OTR) messaging library, in
the way how the sizes of portions of incoming messages were stored. A
remote attacker can exploit this flaw by sending crafted messages to an
application that is using libotr to perform denial of service attacks
(application crash), or potentially, execute arbitrary code with the
privileges of the user running the application.