CVE-2014-6272
Description
Multiple integer overflows in the evbuffer API in Libevent 1.4.x before 1.4.15, 2.0.x before 2.0.22, and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspecified impact via "insanely large inputs" to the (1) evbuffer_add, (2) evbuffer_expand, or (3) bufferevent_write function, which triggers a heap-based buffer overflow or an infinite loop. NOTE: this identifier has been SPLIT per ADT3 due to different affected versions. See CVE-2015-6525 for the functions that are only affected in 2.0 and later.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Mixed 6 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 2.0.21-stable-2 |
| sid | Fixed | 2.0.21-stable-2 |
| forky | Fixed | 2.0.21-stable-2 |
| bullseye | Fixed | 2.0.21-stable-2 |
| bookworm | Fixed | 2.0.21-stable-2 |
| 7.0 | Affected | — |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| libevent_project | libevent | 1.4.0 | |
| libevent_project | libevent | 1.4.1 | |
| libevent_project | libevent | 1.4.2 | |
| libevent_project | libevent | 1.4.3 | |
| libevent_project | libevent | 1.4.4 | |
| libevent_project | libevent | 1.4.5 | |
| libevent_project | libevent | 1.4.6 | |
| libevent_project | libevent | 1.4.7 | |
| libevent_project | libevent | 1.4.8 | |
| libevent_project | libevent | 1.4.9 | |
| libevent_project | libevent | 1.4.10 | |
| libevent_project | libevent | 1.4.11 | |
| libevent_project | libevent | 1.4.12 | |
| libevent_project | libevent | 1.4.13 | |
| libevent_project | libevent | 1.4.14 | |
| libevent_project | libevent | 2.0.1 | |
| libevent_project | libevent | 2.0.2 | |
| libevent_project | libevent | 2.0.3 | |
| libevent_project | libevent | 2.0.4 | |
| libevent_project | libevent | 2.0.5 | |
| libevent_project | libevent | 2.0.6 | |
| libevent_project | libevent | 2.0.7 | |
| libevent_project | libevent | 2.0.8 | |
| libevent_project | libevent | 2.0.9 | |
| libevent_project | libevent | 2.0.10 | |
| libevent_project | libevent | 2.0.11 | |
| libevent_project | libevent | 2.0.12 | |
| libevent_project | libevent | 2.0.13 | |
| libevent_project | libevent | 2.0.14 | |
| libevent_project | libevent | 2.0.15 | |
| libevent_project | libevent | 2.0.16 | |
| libevent_project | libevent | 2.0.17 | |
| libevent_project | libevent | 2.0.18 | |
| libevent_project | libevent | 2.0.19 | |
| libevent_project | libevent | 2.0.20 | |
| libevent_project | libevent | 2.0.21 | |
| libevent_project | libevent | 2.1.1 | |
| libevent_project | libevent | 2.1.2 | |
| libevent_project | libevent | 2.1.3 | |
| libevent_project | libevent | 2.1.4 | |
References
- https://www.suse.com/security/cve/CVE-2014-6272.html
- http://archives.seul.org/libevent/users/Jan-2015/msg00010.html
- http://www.debian.org/security/2015/dsa-3119
- http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.366317
- https://puppet.com/security/cve/CVE-2014-6272
- https://security-tracker.debian.org/tracker/CVE-2014-6272
CWEs
CWE-189
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.