{"id":"UBUNTU-CVE-2016-2851","details":"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.","modified":"2026-04-22T10:40:09.008940Z","published":"2016-03-09T00:00:00Z","related":["USN-2926-1"],"upstream":["CVE-2016-2851"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-2851"},{"type":"REPORT","url":"https://lists.cypherpunks.ca/pipermail/otr-users/2016-March/002581.html"},{"type":"REPORT","url":"https://www.x41-dsec.de/lab/advisories/x41-2016-001-libotr/"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-2926-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2016-2851"}],"affected":[{"package":{"name":"libotr","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/libotr@4.0.0-2.2ubuntu1.1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.0-2.2ubuntu1.1"}]}],"versions":["4.0.0-2.2","4.0.0-2.2ubuntu1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"4.0.0-2.2ubuntu1.1","binary_name":"libotr5"},{"binary_version":"4.0.0-2.2ubuntu1.1","binary_name":"libotr5-bin"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-2851.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}