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             AUSCERT External Security Bulletin Redistribution

                               ESB-2009.1224
                     Moderate: gnutls security update
                              27 August 2009

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           gnutls
Publisher:         Red Hat
Operating System:  Red Hat Enterprise Linux WS/Desktop 5
                   Red Hat Enterprise Linux AS/ES/WS 4
Impact/Access:     Provide Misleading Information -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2009-2730  

Reference:         ASB-2009.1048

Original Bulletin: 
   https://rhn.redhat.com/errata/RHSA-2009-1232.html

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                   Red Hat Security Advisory

Synopsis:          Moderate: gnutls security update
Advisory ID:       RHSA-2009:1232-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2009-1232.html
Issue date:        2009-08-26
CVE Names:         CVE-2009-2730 
=====================================================================

1. Summary:

Updated gnutls packages that fix a security issue are now available for Red
Hat Enterprise Linux 4 and 5.

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
RHEL Desktop Workstation (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

3. Description:

The GnuTLS library provides support for cryptographic algorithms and for
protocols such as Transport Layer Security (TLS).

A flaw was discovered in the way GnuTLS handles NULL characters in certain
fields of X.509 certificates. If an attacker is able to get a
carefully-crafted certificate signed by a Certificate Authority trusted by
an application using GnuTLS, the attacker could use the certificate during
a man-in-the-middle attack and potentially confuse the application into
accepting it by mistake. (CVE-2009-2730)

Users of GnuTLS are advised to upgrade to these updated packages, which
contain a backported patch that corrects this issue.

4. Solution:

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network.  Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

5. Bugs fixed (http://bugzilla.redhat.com/):

516231 - CVE-2009-2730 gnutls: incorrect verification of SSL certificate with NUL in name (GNUTLS-SA-2009-4)

6. Package List:

Red Hat Enterprise Linux AS version 4:

Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/gnutls-1.0.20-4.el4_8.3.src.rpm

i386:
gnutls-1.0.20-4.el4_8.3.i386.rpm
gnutls-debuginfo-1.0.20-4.el4_8.3.i386.rpm
gnutls-devel-1.0.20-4.el4_8.3.i386.rpm

ia64:
gnutls-1.0.20-4.el4_8.3.i386.rpm
gnutls-1.0.20-4.el4_8.3.ia64.rpm
gnutls-debuginfo-1.0.20-4.el4_8.3.i386.rpm
gnutls-debuginfo-1.0.20-4.el4_8.3.ia64.rpm
gnutls-devel-1.0.20-4.el4_8.3.ia64.rpm

ppc:
gnutls-1.0.20-4.el4_8.3.ppc.rpm
gnutls-1.0.20-4.el4_8.3.ppc64.rpm
gnutls-debuginfo-1.0.20-4.el4_8.3.ppc.rpm
gnutls-debuginfo-1.0.20-4.el4_8.3.ppc64.rpm
gnutls-devel-1.0.20-4.el4_8.3.ppc.rpm

s390:
gnutls-1.0.20-4.el4_8.3.s390.rpm
gnutls-debuginfo-1.0.20-4.el4_8.3.s390.rpm
gnutls-devel-1.0.20-4.el4_8.3.s390.rpm

s390x:
gnutls-1.0.20-4.el4_8.3.s390.rpm
gnutls-1.0.20-4.el4_8.3.s390x.rpm
gnutls-debuginfo-1.0.20-4.el4_8.3.s390.rpm
gnutls-debuginfo-1.0.20-4.el4_8.3.s390x.rpm
gnutls-devel-1.0.20-4.el4_8.3.s390x.rpm

x86_64:
gnutls-1.0.20-4.el4_8.3.i386.rpm
gnutls-1.0.20-4.el4_8.3.x86_64.rpm
gnutls-debuginfo-1.0.20-4.el4_8.3.i386.rpm
gnutls-debuginfo-1.0.20-4.el4_8.3.x86_64.rpm
gnutls-devel-1.0.20-4.el4_8.3.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/gnutls-1.0.20-4.el4_8.3.src.rpm

i386:
gnutls-1.0.20-4.el4_8.3.i386.rpm
gnutls-debuginfo-1.0.20-4.el4_8.3.i386.rpm
gnutls-devel-1.0.20-4.el4_8.3.i386.rpm

x86_64:
gnutls-1.0.20-4.el4_8.3.i386.rpm
gnutls-1.0.20-4.el4_8.3.x86_64.rpm
gnutls-debuginfo-1.0.20-4.el4_8.3.i386.rpm
gnutls-debuginfo-1.0.20-4.el4_8.3.x86_64.rpm
gnutls-devel-1.0.20-4.el4_8.3.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/gnutls-1.0.20-4.el4_8.3.src.rpm

i386:
gnutls-1.0.20-4.el4_8.3.i386.rpm
gnutls-debuginfo-1.0.20-4.el4_8.3.i386.rpm
gnutls-devel-1.0.20-4.el4_8.3.i386.rpm

ia64:
gnutls-1.0.20-4.el4_8.3.i386.rpm
gnutls-1.0.20-4.el4_8.3.ia64.rpm
gnutls-debuginfo-1.0.20-4.el4_8.3.i386.rpm
gnutls-debuginfo-1.0.20-4.el4_8.3.ia64.rpm
gnutls-devel-1.0.20-4.el4_8.3.ia64.rpm

x86_64:
gnutls-1.0.20-4.el4_8.3.i386.rpm
gnutls-1.0.20-4.el4_8.3.x86_64.rpm
gnutls-debuginfo-1.0.20-4.el4_8.3.i386.rpm
gnutls-debuginfo-1.0.20-4.el4_8.3.x86_64.rpm
gnutls-devel-1.0.20-4.el4_8.3.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

Source:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/gnutls-1.0.20-4.el4_8.3.src.rpm

i386:
gnutls-1.0.20-4.el4_8.3.i386.rpm
gnutls-debuginfo-1.0.20-4.el4_8.3.i386.rpm
gnutls-devel-1.0.20-4.el4_8.3.i386.rpm

ia64:
gnutls-1.0.20-4.el4_8.3.i386.rpm
gnutls-1.0.20-4.el4_8.3.ia64.rpm
gnutls-debuginfo-1.0.20-4.el4_8.3.i386.rpm
gnutls-debuginfo-1.0.20-4.el4_8.3.ia64.rpm
gnutls-devel-1.0.20-4.el4_8.3.ia64.rpm

x86_64:
gnutls-1.0.20-4.el4_8.3.i386.rpm
gnutls-1.0.20-4.el4_8.3.x86_64.rpm
gnutls-debuginfo-1.0.20-4.el4_8.3.i386.rpm
gnutls-debuginfo-1.0.20-4.el4_8.3.x86_64.rpm
gnutls-devel-1.0.20-4.el4_8.3.x86_64.rpm

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/gnutls-1.4.1-3.el5_3.5.src.rpm

i386:
gnutls-1.4.1-3.el5_3.5.i386.rpm
gnutls-debuginfo-1.4.1-3.el5_3.5.i386.rpm
gnutls-utils-1.4.1-3.el5_3.5.i386.rpm

x86_64:
gnutls-1.4.1-3.el5_3.5.i386.rpm
gnutls-1.4.1-3.el5_3.5.x86_64.rpm
gnutls-debuginfo-1.4.1-3.el5_3.5.i386.rpm
gnutls-debuginfo-1.4.1-3.el5_3.5.x86_64.rpm
gnutls-utils-1.4.1-3.el5_3.5.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/gnutls-1.4.1-3.el5_3.5.src.rpm

i386:
gnutls-debuginfo-1.4.1-3.el5_3.5.i386.rpm
gnutls-devel-1.4.1-3.el5_3.5.i386.rpm

x86_64:
gnutls-debuginfo-1.4.1-3.el5_3.5.i386.rpm
gnutls-debuginfo-1.4.1-3.el5_3.5.x86_64.rpm
gnutls-devel-1.4.1-3.el5_3.5.i386.rpm
gnutls-devel-1.4.1-3.el5_3.5.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/gnutls-1.4.1-3.el5_3.5.src.rpm

i386:
gnutls-1.4.1-3.el5_3.5.i386.rpm
gnutls-debuginfo-1.4.1-3.el5_3.5.i386.rpm
gnutls-devel-1.4.1-3.el5_3.5.i386.rpm
gnutls-utils-1.4.1-3.el5_3.5.i386.rpm

ia64:
gnutls-1.4.1-3.el5_3.5.i386.rpm
gnutls-1.4.1-3.el5_3.5.ia64.rpm
gnutls-debuginfo-1.4.1-3.el5_3.5.i386.rpm
gnutls-debuginfo-1.4.1-3.el5_3.5.ia64.rpm
gnutls-devel-1.4.1-3.el5_3.5.ia64.rpm
gnutls-utils-1.4.1-3.el5_3.5.ia64.rpm

ppc:
gnutls-1.4.1-3.el5_3.5.ppc.rpm
gnutls-1.4.1-3.el5_3.5.ppc64.rpm
gnutls-debuginfo-1.4.1-3.el5_3.5.ppc.rpm
gnutls-debuginfo-1.4.1-3.el5_3.5.ppc64.rpm
gnutls-devel-1.4.1-3.el5_3.5.ppc.rpm
gnutls-devel-1.4.1-3.el5_3.5.ppc64.rpm
gnutls-utils-1.4.1-3.el5_3.5.ppc.rpm

s390x:
gnutls-1.4.1-3.el5_3.5.s390.rpm
gnutls-1.4.1-3.el5_3.5.s390x.rpm
gnutls-debuginfo-1.4.1-3.el5_3.5.s390.rpm
gnutls-debuginfo-1.4.1-3.el5_3.5.s390x.rpm
gnutls-devel-1.4.1-3.el5_3.5.s390.rpm
gnutls-devel-1.4.1-3.el5_3.5.s390x.rpm
gnutls-utils-1.4.1-3.el5_3.5.s390x.rpm

x86_64:
gnutls-1.4.1-3.el5_3.5.i386.rpm
gnutls-1.4.1-3.el5_3.5.x86_64.rpm
gnutls-debuginfo-1.4.1-3.el5_3.5.i386.rpm
gnutls-debuginfo-1.4.1-3.el5_3.5.x86_64.rpm
gnutls-devel-1.4.1-3.el5_3.5.i386.rpm
gnutls-devel-1.4.1-3.el5_3.5.x86_64.rpm
gnutls-utils-1.4.1-3.el5_3.5.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2730
http://www.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2009 Red Hat, Inc.
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