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.
Published: 2015-08-24
Score: 7.5 High
EPSS: 1.1% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Debian DLA Debian DLA DLA-137-1 libevent security update
Debian DSA Debian DSA DSA-3119-1 libevent security update
EUVD EUVD EUVD-2014-6158 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.
Ubuntu USN Ubuntu USN USN-2477-1 libevent vulnerability
History

Sun, 13 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00513}

epss

{'score': 0.01085}


Subscriptions

Debian Debian Linux
Libevent Project Libevent
cve-icon MITRE

Status: PUBLISHED

Assigner: debian

Published:

Updated: 2024-08-06T12:10:13.286Z

Reserved: 2014-09-09T00:00:00.000Z

Link: CVE-2014-6272

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2015-08-24T14:59:01.353

Modified: 2026-05-06T22:30:45.220

Link: CVE-2014-6272

cve-icon Redhat

Severity : Moderate

Publid Date: 2015-01-05T00:00:00Z

Links: CVE-2014-6272 - Bugzilla

cve-icon OpenCVE Enrichment

No data.