CVE catalog
CVE-2016-2851
libotr: CVE-2016-2851
- Severity
- Critical · CVSS 9.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 24.28% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libotr | sid | 4.1.1-7 | fixed |
| Debian | libotr | forky | 4.1.1-7 | fixed |
| Debian | libotr | trixie | 4.1.1-6 | fixed |
| Debian | libotr | bookworm | 4.1.1-5 | fixed |
| Ubuntu | libotr | 14.04 | 4.0.0-2.2 | vulnerable |
| Ubuntu | libotr | 14.04 | 4.0.0-2.2ubuntu1 | vulnerable |
| Ubuntu | libotr | 14.04 | 4.0.0-2.2ubuntu1.1 | fixed |
| Suse | libotr | linux enterprise desktop 12 | 4.0.0-9.1 | fixed |
| Suse | libotr | linux enterprise desktop 12 sp1 | 4.0.0-9.1 | fixed |
| Suse | libotr | linux enterprise software development kit 12 | 4.0.0-9.1 | fixed |
| Suse | libotr | linux enterprise software development kit 12 sp1 | 4.0.0-9.1 | fixed |
| Suse | libotr | linux enterprise server 12 | 4.0.0-9.1 | fixed |
| Suse | libotr | linux enterprise server for sap applications 12 | 4.0.0-9.1 | fixed |
| Suse | libotr | linux enterprise server 12 sp1 | 4.0.0-9.1 | fixed |
| Suse | libotr | linux enterprise server for sap applications 12 sp1 | 4.0.0-9.1 | fixed |
| Suse | libotr | linux enterprise software development kit 11 sp4 | 3.2.0-10.5.1 | fixed |
| Suse | libotr | linux enterprise desktop 11 sp4 | 3.2.0-10.5.1 | fixed |
| Suse | libotr | linux enterprise server 11 sp4 | 3.2.0-10.5.1 | fixed |
| Suse | libotr | linux enterprise server for sap applications 11 sp4 | 3.2.0-10.5.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libotr | source | sid | 4.1.1-1 | not yet assigned | Not reported | [817799] |
| Debian | libotr | source | forky | 4.1.1-1 | not yet assigned | Not reported | [817799] |
| Debian | libotr | source | trixie | 4.1.1-1 | not yet assigned | Not reported | [817799] |
| Debian | libotr | source | bookworm | 4.1.1-1 | not yet assigned | Not reported | [817799] |
| Ubuntu | libotr | deb | 14.04 | 4.0.0-2.2ubuntu1.1 | Not reported | UBUNTU-CVE-2016-2851 | Not reported |
| Suse | libotr | rpm | linux enterprise desktop 12 | 4.0.0-9.1 | Not reported | SUSE-SU-2016:0707-1 | Not reported |
| Suse | libotr | rpm | linux enterprise desktop 12 sp1 | 4.0.0-9.1 | Not reported | SUSE-SU-2016:0707-1 | Not reported |
| Suse | libotr | rpm | linux enterprise software development kit 12 | 4.0.0-9.1 | Not reported | SUSE-SU-2016:0707-1 | Not reported |
| Suse | libotr | rpm | linux enterprise software development kit 12 sp1 | 4.0.0-9.1 | Not reported | SUSE-SU-2016:0707-1 | Not reported |
| Suse | libotr | rpm | linux enterprise server 12 | 4.0.0-9.1 | Not reported | SUSE-SU-2016:0707-1 | Not reported |
| Suse | libotr | rpm | linux enterprise server for sap applications 12 | 4.0.0-9.1 | Not reported | SUSE-SU-2016:0707-1 | Not reported |
| Suse | libotr | rpm | linux enterprise server 12 sp1 | 4.0.0-9.1 | Not reported | SUSE-SU-2016:0707-1 | Not reported |
| Suse | libotr | rpm | linux enterprise server for sap applications 12 sp1 | 4.0.0-9.1 | Not reported | SUSE-SU-2016:0707-1 | Not reported |
| Suse | libotr | rpm | linux enterprise software development kit 11 sp4 | 3.2.0-10.5.1 | Not reported | SUSE-SU-2016:0706-1 | Not reported |
| Suse | libotr | rpm | linux enterprise desktop 11 sp4 | 3.2.0-10.5.1 | Not reported | SUSE-SU-2016:0706-1 | Not reported |
| Suse | libotr | rpm | linux enterprise server 11 sp4 | 3.2.0-10.5.1 | Not reported | SUSE-SU-2016:0706-1 | Not reported |
| Suse | libotr | rpm | linux enterprise server for sap applications 11 sp4 | 3.2.0-10.5.1 | Not reported | SUSE-SU-2016:0706-1 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libotr5]Fixed
Source package: [libotr]
Details (2)
4.1.1-5· amd64 · bookwormFixed · Fixed:
4.1.1-1dsa · libotr · debian · bookworm; dsa · libotr · debian · 12
4.1.1-5· arm64 · bookwormFixed · Fixed:
4.1.1-1dsa · libotr · debian · bookworm; dsa · libotr · debian · 12
- [libotr5-bin]Fixed
Source package: [libotr]
Details (2)
4.1.1-5· amd64 · bookwormFixed · Fixed:
4.1.1-1dsa · libotr · debian · bookworm; dsa · libotr · debian · 12
4.1.1-5· arm64 · bookwormFixed · Fixed:
4.1.1-1dsa · libotr · debian · bookworm; dsa · libotr · debian · 12
- [libotr5-dev]Fixed
Source package: [libotr]
Details (2)
4.1.1-5· amd64 · bookwormFixed · Fixed:
4.1.1-1dsa · libotr · debian · bookworm; dsa · libotr · debian · 12
4.1.1-5· arm64 · bookwormFixed · Fixed:
4.1.1-1dsa · libotr · debian · bookworm; dsa · libotr · debian · 12
[Debian 13 (Trixie)]
- [libotr5-bin]Fixed
Source package: [libotr]
Details (2)
4.1.1-6· amd64 · trixieFixed · Fixed:
4.1.1-1dsa · libotr · debian · 13
4.1.1-6· arm64 · trixieFixed · Fixed:
4.1.1-1dsa · libotr · debian · 13
- [libotr5-dev]Fixed
Source package: [libotr]
Details (2)
4.1.1-6· amd64 · trixieFixed · Fixed:
4.1.1-1dsa · libotr · debian · 13
4.1.1-6· arm64 · trixieFixed · Fixed:
4.1.1-1dsa · libotr · debian · 13
- [libotr5t64]Fixed
Source package: [libotr]
Details (2)
4.1.1-6· amd64 · trixieFixed · Fixed:
4.1.1-1dsa · libotr · debian · 13
4.1.1-6· arm64 · trixieFixed · Fixed:
4.1.1-1dsa · libotr · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2016_0706-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2016-2851]
- [https://osv.dev/vulnerability/DSA-3512-1]
- [https://osv.dev/vulnerability/SUSE-SU-2016:0706-1]
- [https://osv.dev/vulnerability/SUSE-SU-2016:0707-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2016-2851]
- [https://security-tracker.debian.org/tracker/CVE-2016-2851]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]