high
7.5
CWE
189 119 190
Advisory Published
Updated

CVE-2014-6272: Buffer Overflow

First published: Mon Aug 24 2015(Updated: )

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.

Credit: security@debian.org

Affected SoftwareAffected VersionHow to fix
Debian GNU/Linux=7.0
Libevent=1.4.0
Libevent=1.4.1
Libevent=1.4.2
Libevent=1.4.3
Libevent=1.4.4
Libevent=1.4.5
Libevent=1.4.6
Libevent=1.4.7
Libevent=1.4.8
Libevent=1.4.9
Libevent=1.4.10
Libevent=1.4.11
Libevent=1.4.12
Libevent=1.4.13
Libevent=1.4.14
Libevent=2.0.1
Libevent=2.0.2
Libevent=2.0.3
Libevent=2.0.4
Libevent=2.0.5
Libevent=2.0.6
Libevent=2.0.7
Libevent=2.0.8
Libevent=2.0.9
Libevent=2.0.10
Libevent=2.0.11
Libevent=2.0.12
Libevent=2.0.13
Libevent=2.0.14
Libevent=2.0.15
Libevent=2.0.16
Libevent=2.0.17
Libevent=2.0.18
Libevent=2.0.19
Libevent=2.0.20
Libevent=2.0.21
Libevent=2.1.1
Libevent=2.1.2
Libevent=2.1.3
Libevent=2.1.4

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2014-6272?

    CVE-2014-6272 is considered a moderate severity vulnerability due to its potential to cause denial of service.

  • How do I fix CVE-2014-6272?

    To fix CVE-2014-6272, upgrade to Libevent versions 1.4.15, 2.0.22, or 2.1.5-beta or later.

  • What types of systems are affected by CVE-2014-6272?

    CVE-2014-6272 affects multiple versions of Libevent as well as certain versions of Debian Linux.

  • What impact does CVE-2014-6272 have on applications using Libevent?

    CVE-2014-6272 can allow context-dependent attackers to cause denial of service via large inputs to the evbuffer API.

  • Are there any known exploits for CVE-2014-6272?

    As of the information available, no specific exploits for CVE-2014-6272 have been publicly disclosed.

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