CVE-2016-2851

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 24.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2016-04-07 · updated 2026-06-17
Weakness: CWE-119

Description

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.

Affected products

Cypherpunks Libotr: through 4.1.0
Debian Linux: 7.0, 8.0
openSUSE Leap: 42.1
Opensuse: 13.2

References

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00021.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00030.html
http://seclists.org/fulldisclosure/2016/Mar/21
http://www.debian.org/security/2016/dsa-3512
http://www.securityfocus.com/archive/1/537745/100/0/threaded
http://www.securityfocus.com/bid/84285
http://www.ubuntu.com/usn/USN-2926-1
https://lists.cypherpunks.ca/pipermail/otr-users/2016-March/002581.html
https://security.gentoo.org/glsa/201701-10
https://www.exploit-db.com/exploits/39550/
https://www.x41-dsec.de/lab/advisories/x41-2016-001-libotr/
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00021.html

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