What’s Vulnerable › Vulnerabilities

CVE-2014-6272

• Severity: high (CVSS 7.5 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2015-08-24 · updated 2026-06-17
• Weakness: CWE-189

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.

Affected products

• Debian Linux: 7.0
• Libevent Project Libevent: 1.4.0, 1.4.1, 1.4.2, 1.4.3, 1.4.4, 1.4.5 (+34)

References

• 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
• 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

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