CVE-2016-2851
Publication date 9 March 2016
Last updated 25 August 2025
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| libotr | ||
| 14.04 LTS trusty |
Fixed 4.0.0-2.2ubuntu1.1
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
9.8 · Critical
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-2926-1
- OTR vulnerability
- 10 March 2016