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Gentoo Linux Security Advisory GLSA 200708-06
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http://security.gentoo.org/
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Severity: Normal
Title: Net::DNS: Multiple vulnerabilities
Date: August 11, 2007
Bugs: #184029
ID: 200708-06
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Synopsis
=======
Multiple vulnerabilities have been discovered in the Net::DNS Perl
module, allowing for a Denial of Service and a cache poisoning attack.
Background
=========
Net::DNS is a Perl implementation of a DNS resolver.
Affected packages
================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-perl/Net-DNS < 0.60 >= 0.60
Description
==========
hjp discovered an error when handling DNS query IDs which make them
partially predictable. Steffen Ullrich discovered an error in the
dn_expand() function which could lead to an endless loop.
Impact
=====
A remote attacker could send a specially crafted DNS request to the
server which could result in a Denial of Service with an infinite
recursion, or perform a cache poisoning attack.
Workaround
=========
There is no known workaround at this time.
Resolution
=========
All Net::DNS users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-perl/Net-DNS-0.60"
References
=========
[ 1 ] CVE-2007-3377
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3377
[ 2 ] CVE-2007-3409
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3409
Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200708-06.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 2007 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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