CVE-2016-2851

critical

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.

References

Advisories
More

https://www.exploit-db.com/exploits/39550/

https://security.gentoo.org/glsa/201701-10

http://www.ubuntu.com/usn/USN-2926-1

http://www.securityfocus.com/bid/84285

http://www.securityfocus.com/archive/1/537745/100/0/threaded

http://www.debian.org/security/2016/dsa-3512

https://www.x41-dsec.de/lab/advisories/x41-2016-001-libotr/

https://lists.cypherpunks.ca/pipermail/otr-users/2016-March/002581.html

https://euvd.enisa.europa.eu/vulnerability/EUVD-2016-3924

http://seclists.org/fulldisclosure/2016/Mar/21

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00030.html

http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00021.html

Details

Source: Mitre, NVD

Published: 2016-04-07

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.254