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Gentoo: GLSA-202309-12 Critical: Libcurl Denial of Service Vulnerability

gentoo
Calendar Grey February 7, 2015
Dist Gentoo Esm H88
Integer overflow vulnerabilities in libevent can result in potential arbitrary code execution or cause Denial of Service issues on systems running Gentoo.
Multiple integer overflow errors in libevent could result in execution of arbitrary code or Denial of Service.

Summary

Multiple integer overflow errors in libevent could cause a heap-based buffer overflow.

Topics%20covered

Topics Covered

security advisory denial of service Gentoo arbitrary code execution integer overflow

Resolution

All libevent users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-libs/libevent-2.0.22"

References

[ 1 ] CVE-2014-6272 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-6272

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201502-07
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Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity
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Severity: Normal
Title: libevent: User-assisted execution of arbitrary code
Date: February 07, 2015
Bugs: #535774
ID: 201502-07

Topics%20covered

Topics Covered

security advisory denial of service Gentoo arbitrary code execution integer overflow

Synopsis

Multiple integer overflow errors in libevent could result in execution of arbitrary code or Denial of Service.

Background

libevent is a library to execute a function when a specific event occurs on a file descriptor.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-libs/libevent < 2.0.22 >= 2.0.22

Impact

===== A context-dependent attacker could cause an application linked against libevent to pass an excessively long input through evbuffer, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition.

Workaround

There is no known workaround at this time.

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