CVE-2016-2851
Summary
| CVE | CVE-2016-2851 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2016-04-07 23:59:09 UTC |
| Updated | 2026-05-06 22:30:45 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.0 9.8 CRITICAL from [email protected]
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Problem Types: CWE-119 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.0 | [email protected] | Primary | 9.8 | CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 2.0 | [email protected] | Primary | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
CVSS v3.0 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
LowAuthentication
NoneConfidentiality
PartialIntegrity
PartialAvailability
PartialAV:N/AC:L/Au:N/C:P/I:P/A:P
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Cypherpunks | Libotr | All | All | All | All |
| Operating System | Debian | Debian Linux | 7.0 | All | All | All |
| Operating System | Debian | Debian Linux | 8.0 | All | All | All |
| Operating System | Opensuse | Leap | 42.1 | All | All | All |
| Operating System | Opensuse | Opensuse | 13.2 | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Memory Corruption Vulnerability in "libotr" | af854a3a-2127-422b-91ae-364da2661108 | www.x41-dsec.de | Exploit |
| [security-announce] openSUSE-SU-2016:0708-1: important: Security update | af854a3a-2127-422b-91ae-364da2661108 | lists.opensuse.org | Mailing List |
| SecurityFocus | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Third Party Advisory |
| [security-announce] openSUSE-SU-2016:0732-1: important: Security update | af854a3a-2127-422b-91ae-364da2661108 | lists.opensuse.org | Vendor Advisory |
| [OTR-users] Security Advisory: upgrade to libotr 4.1.1 | af854a3a-2127-422b-91ae-364da2661108 | lists.cypherpunks.ca | Exploit |
| libotr, Pidgin OTR: Remote execution of arbitrary code (GLSA 201701-10) — Gentoo security | af854a3a-2127-422b-91ae-364da2661108 | security.gentoo.org | Third Party Advisory |
| Full Disclosure: Advisory X41-2016-001: Memory Corruption Vulnerability in "libotr" | af854a3a-2127-422b-91ae-364da2661108 | seclists.org | Exploit, Mailing List, Third Party Advisory |
| Debian -- Security Information -- DSA-3512-1 libotr | af854a3a-2127-422b-91ae-364da2661108 | www.debian.org | Third Party Advisory |
| USN-2926-1: OTR vulnerability | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | Third Party Advisory |
| Libotr CVE-2016-2851 Integer Overflow Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Third Party Advisory, VDB Entry |
| libotr 4.1.0 - Memory Corruption - Multiple dos Exploit | af854a3a-2127-422b-91ae-364da2661108 | www.exploit-db.com | Third Party Advisory, VDB Entry |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 710415 Gentoo Linux libotr, Pidgin OTR Remote execution of arbitrary code Vulnerability (GLSA 201701-10)