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:
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 (at) gentoo (dot) org [email concealed] 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.
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 (at) gentoo (dot) org [email concealed] 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
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