Date: Mon, 9 May 2005 10:43:54 +0200
From: Matthias Geerdsen <vorlon@gentoo.org.>
To: gentoo-announce@lists.gentoo.org
Subject: [ GLSA 200505-04 ] GnuTLS: Denial of Service vulnerability
Message-ID: <20050509084354.GA5564@kosh.atw.wh.local.>
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Gentoo Linux Security Advisory GLSA 200505-04
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http://security.gentoo.org/
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Severity: Normal
Title: GnuTLS: Denial of Service vulnerability
Date: May 09, 2005
Bugs: #90726
ID: 200505-04
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Synopsis
========
The GnuTLS library is vulnerable to Denial of Service attacks.
Background
==========
GnuTLS is a free TLS 1.0 and SSL 3.0 implementation for the GNU
project.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-libs/gnutls < 1.2.3 >= 1.2.3
*>= 1.0.25
Description
===========
A vulnerability has been discovered in the record packet parsing in the
GnuTLS library. Additionally, a flaw was also found in the RSA key
export functionality.
Impact
======
A remote attacker could exploit this vulnerability and cause a Denial
of Service to any application that utilizes the GnuTLS library.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All GnuTLS users should remove the existing installation and upgrade to
the latest version:
# emerge --sync
# emerge --unmerge gnutls
# emerge --ask --oneshot --verbose net-libs/gnutls
Due to small API changes with the previous version, please do the
following to ensure your applications are using the latest GnuTLS that
you just emerged.
# revdep-rebuild --soname-regexp libgnutls.so.1[0-1]
Previously exported RSA keys can be fixed by executing the following
command on the key files:
# certtool -k infile outfile
References
==========
[ 1 ] GnuTLS Announcement
http://lists.gnupg.org/pipermail/gnutls-dev/2005-April/000858.html
[ 2 ] CAN-2005-1431
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1431
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200505-04.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 2005 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/2.0
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