A new security update has been released for Gentoo Linux - pdnsd: Denial of Service and potential arbitrary code execution. Here the announcement:
Gentoo Linux Security Advisory GLSA 200605-10
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http://security.gentoo.org/
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Severity: High
Title: pdnsd: Denial of Service and potential arbitrary code
execution
Date: May 10, 2006
Bugs: #131341
ID: 200605-10
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Synopsis
========
pdnsd is vulnerable to a buffer overflow that may result in arbitrary
code execution.
Background
==========
pdnsd is a proxy DNS server with permanent caching that is designed to
cope with unreachable DNS servers.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-dns/pdnsd < 1.2.4 >= 1.2.4
Description
===========
The pdnsd team has discovered an unspecified buffer overflow
vulnerability. The PROTOS DNS Test Suite, by the Oulu University Secure
Programming Group (OUSPG), has also revealed a memory leak error within
the handling of the QTYPE and QCLASS DNS queries, leading to
consumption of large amounts of memory.
Impact
======
An attacker can craft malicious DNS queries leading to a Denial of
Service, and potentially the execution of arbitrary code.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All pdnsd users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-dns/pdnsd-1.2.4-r1"
References
==========
[ 1 ] CVE-2006-2076
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2076
[ 2 ] CVE-2006-2077
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2077
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200605-10.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
http://bugs.gentoo.org.
License
=======
Copyright 2006 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5
