Integer overflow in proto.c in libotr before 4.1.1 on 64-bit platforms allows remote attackers to cause a denial of service (memory corruption and application crash) or execute arbitrary code via a series of large OTR messages, which triggers a heap-based buffer overflow.
lists.opensuse.org/opensuse-security-announce/2016-03/msg00021.html
lists.opensuse.org/opensuse-security-announce/2016-03/msg00030.html
seclists.org/fulldisclosure/2016/Mar/21
www.debian.org/security/2016/dsa-3512
www.securityfocus.com/archive/1/537745/100/0/threaded
www.securityfocus.com/bid/84285
www.ubuntu.com/usn/USN-2926-1
lists.cypherpunks.ca/pipermail/otr-users/2016-March/002581.html
security.gentoo.org/glsa/201701-10
www.exploit-db.com/exploits/39550/
www.x41-dsec.de/lab/advisories/x41-2016-001-libotr/