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CVE-2016-2851

CriticalPublished

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...

Published: Apr 7, 2016
Updated: Aug 5, 2024
Assigning CNA: mitre
Evidence observed: Mar 10, 2016

Primary CVSS

9.8/ 10Critical

nvd · CVSS 3.0

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

EPSS probability estimate

20.9%

Moderate · next 30 days

Percentile: 97.5%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

libotr 4.1.0 - Memory CorruptionExploit
X41 D-Sec GmbH · multiple · Mar 10, 2016

Responsible use

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