GLSA 201204-02: InspIRCd: Arbitrary code execution

http://security.gentoo.org/

Severity:	high
Title:	InspIRCd: Arbitrary code execution
Date:	04/10/2012
Bugs:	#409159
ID:	201204-02

Synopsis

A heap-based buffer overflow in InspIRCd may allow execution of arbitrary code.

Background

InspIRCd (Inspire IRCd) is a modular C++ IRC daemon

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-irc/inspircd	< 2.0.5-r1	>= 2.0.5-r1	All supported architectures

Description

A vulnerability in InspIRCd allows DNS compression features to control the number of overflowed bytes sent to the heap-based buffer "res[]" in dns.cpp.

Impact

A remote attacker could send specially crafted DNS responses, 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.

Resolution

All InspIRCd users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=net-irc/inspircd-2.0.5-r1"

References

CVE-2012-1836

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201204-02.xml

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.