A new update is available for Red Hat Enterprise Linux. Here the announcement:
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Red Hat Security Advisory

Synopsis: Critical: samba security update
Advisory ID: RHSA-2008:0289-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2008-0289.html
Issue date: 2008-05-28
CVE Names: CVE-2008-1105
=====================================================================

1. Summary:

Updated samba packages that fix a security issue are now available for Red
Hat Enterprise Linux 4.5 Extended Update Support.

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

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 4.5.z - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux ES version 4.5.z - i386, ia64, x86_64

3. Description:

Samba is a suite of programs used by machines to share files, printers, and
other information.

A heap-based buffer overflow flaw was found in the way Samba clients handle
over-sized packets. If a client connected to a malicious Samba server, it
was possible to execute arbitrary code as the Samba client user. It was
also possible for a remote user to send a specially crafted print request
to a Samba server that could result in the server executing the vulnerable
client code, resulting in arbitrary code execution with the permissions of
the Samba server. (CVE-2008-1105)

Red Hat would like to thank Alin Rad Pop of Secunia Research for
responsibly disclosing this issue.

Users of Samba are advised to upgrade to these updated packages, which
contain a backported patch to resolve 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/FAQ_58_10188

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

446724 - CVE-2008-1105 Samba client buffer overflow

6. Package List:

Red Hat Enterprise Linux AS version 4.5.z:

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/4AS-4.5.z/en/os/SRPMS/samba-3.0.10-2.el4_5.3.src.rpm

i386:
samba-3.0.10-2.el4_5.3.i386.rpm
samba-client-3.0.10-2.el4_5.3.i386.rpm
samba-common-3.0.10-2.el4_5.3.i386.rpm
samba-debuginfo-3.0.10-2.el4_5.3.i386.rpm
samba-swat-3.0.10-2.el4_5.3.i386.rpm

ia64:
samba-3.0.10-2.el4_5.3.ia64.rpm
samba-client-3.0.10-2.el4_5.3.ia64.rpm
samba-common-3.0.10-2.el4_5.3.i386.rpm
samba-common-3.0.10-2.el4_5.3.ia64.rpm
samba-debuginfo-3.0.10-2.el4_5.3.i386.rpm
samba-debuginfo-3.0.10-2.el4_5.3.ia64.rpm
samba-swat-3.0.10-2.el4_5.3.ia64.rpm

ppc:
samba-3.0.10-2.el4_5.3.ppc.rpm
samba-client-3.0.10-2.el4_5.3.ppc.rpm
samba-common-3.0.10-2.el4_5.3.ppc.rpm
samba-common-3.0.10-2.el4_5.3.ppc64.rpm
samba-debuginfo-3.0.10-2.el4_5.3.ppc.rpm
samba-debuginfo-3.0.10-2.el4_5.3.ppc64.rpm
samba-swat-3.0.10-2.el4_5.3.ppc.rpm

s390:
samba-3.0.10-2.el4_5.3.s390.rpm
samba-client-3.0.10-2.el4_5.3.s390.rpm
samba-common-3.0.10-2.el4_5.3.s390.rpm
samba-debuginfo-3.0.10-2.el4_5.3.s390.rpm
samba-swat-3.0.10-2.el4_5.3.s390.rpm

s390x:
samba-3.0.10-2.el4_5.3.s390x.rpm
samba-client-3.0.10-2.el4_5.3.s390x.rpm
samba-common-3.0.10-2.el4_5.3.s390.rpm
samba-common-3.0.10-2.el4_5.3.s390x.rpm
samba-debuginfo-3.0.10-2.el4_5.3.s390.rpm
samba-debuginfo-3.0.10-2.el4_5.3.s390x.rpm
samba-swat-3.0.10-2.el4_5.3.s390x.rpm

x86_64:
samba-3.0.10-2.el4_5.3.x86_64.rpm
samba-client-3.0.10-2.el4_5.3.x86_64.rpm
samba-common-3.0.10-2.el4_5.3.i386.rpm
samba-common-3.0.10-2.el4_5.3.x86_64.rpm
samba-debuginfo-3.0.10-2.el4_5.3.i386.rpm
samba-debuginfo-3.0.10-2.el4_5.3.x86_64.rpm
samba-swat-3.0.10-2.el4_5.3.x86_64.rpm

Red Hat Enterprise Linux ES version 4.5.z:

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/4ES-4.5.z/en/os/SRPMS/samba-3.0.10-2.el4_5.3.src.rpm

i386:
samba-3.0.10-2.el4_5.3.i386.rpm
samba-client-3.0.10-2.el4_5.3.i386.rpm
samba-common-3.0.10-2.el4_5.3.i386.rpm
samba-debuginfo-3.0.10-2.el4_5.3.i386.rpm
samba-swat-3.0.10-2.el4_5.3.i386.rpm

ia64:
samba-3.0.10-2.el4_5.3.ia64.rpm
samba-client-3.0.10-2.el4_5.3.ia64.rpm
samba-common-3.0.10-2.el4_5.3.i386.rpm
samba-common-3.0.10-2.el4_5.3.ia64.rpm
samba-debuginfo-3.0.10-2.el4_5.3.i386.rpm
samba-debuginfo-3.0.10-2.el4_5.3.ia64.rpm
samba-swat-3.0.10-2.el4_5.3.ia64.rpm

x86_64:
samba-3.0.10-2.el4_5.3.x86_64.rpm
samba-client-3.0.10-2.el4_5.3.x86_64.rpm
samba-common-3.0.10-2.el4_5.3.i386.rpm
samba-common-3.0.10-2.el4_5.3.x86_64.rpm
samba-debuginfo-3.0.10-2.el4_5.3.i386.rpm
samba-debuginfo-3.0.10-2.el4_5.3.x86_64.rpm
samba-swat-3.0.10-2.el4_5.3.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-2008-1105
http://www.redhat.com/security/updates/classification/#critical

8. Contact:

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

Copyright 2008 Red Hat, Inc.
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