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

Synopsis: Important: libtiff security and bug fix update
Advisory ID: RHSA-2008:0847-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2008-0847.html
Issue date: 2008-08-28
CVE Names: CVE-2008-2327
=====================================================================

1. Summary:

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

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

2. Relevant releases/architectures:

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 libtiff packages contain a library of functions for manipulating Tagged
Image File Format (TIFF) files.

Multiple uses of uninitialized values were discovered in libtiff's
Lempel-Ziv-Welch (LZW) compression algorithm decoder. An attacker could
create a carefully crafted LZW-encoded TIFF file that would cause an
application linked with libtiff to crash or, possibly, execute arbitrary
code. (CVE-2008-2327)

Red Hat would like to thank Drew Yao of the Apple Product Security team for
reporting this issue.

Additionally, these updated packages fix the following bug:

* the libtiff packages included manual pages for the sgi2tiff and tiffsv
commands, which are not included in these packages. These extraneous manual
pages were removed.

All libtiff users are advised to upgrade to these updated packages, which
contain backported patches to resolve these issues.

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/):

458674 - CVE-2008-2327 libtiff: use of uninitialized memory in LZW decoder
460120 - [RHEL5] libtiff has unnecessary man pages.

6. Package List:

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/libtiff-3.8.2-7.el5_2.2.src.rpm

i386:
libtiff-3.8.2-7.el5_2.2.i386.rpm
libtiff-debuginfo-3.8.2-7.el5_2.2.i386.rpm

x86_64:
libtiff-3.8.2-7.el5_2.2.i386.rpm
libtiff-3.8.2-7.el5_2.2.x86_64.rpm
libtiff-debuginfo-3.8.2-7.el5_2.2.i386.rpm
libtiff-debuginfo-3.8.2-7.el5_2.2.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/libtiff-3.8.2-7.el5_2.2.src.rpm

i386:
libtiff-debuginfo-3.8.2-7.el5_2.2.i386.rpm
libtiff-devel-3.8.2-7.el5_2.2.i386.rpm

x86_64:
libtiff-debuginfo-3.8.2-7.el5_2.2.i386.rpm
libtiff-debuginfo-3.8.2-7.el5_2.2.x86_64.rpm
libtiff-devel-3.8.2-7.el5_2.2.i386.rpm
libtiff-devel-3.8.2-7.el5_2.2.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/libtiff-3.8.2-7.el5_2.2.src.rpm

i386:
libtiff-3.8.2-7.el5_2.2.i386.rpm
libtiff-debuginfo-3.8.2-7.el5_2.2.i386.rpm
libtiff-devel-3.8.2-7.el5_2.2.i386.rpm

ia64:
libtiff-3.8.2-7.el5_2.2.i386.rpm
libtiff-3.8.2-7.el5_2.2.ia64.rpm
libtiff-debuginfo-3.8.2-7.el5_2.2.i386.rpm
libtiff-debuginfo-3.8.2-7.el5_2.2.ia64.rpm
libtiff-devel-3.8.2-7.el5_2.2.ia64.rpm

ppc:
libtiff-3.8.2-7.el5_2.2.ppc.rpm
libtiff-3.8.2-7.el5_2.2.ppc64.rpm
libtiff-debuginfo-3.8.2-7.el5_2.2.ppc.rpm
libtiff-debuginfo-3.8.2-7.el5_2.2.ppc64.rpm
libtiff-devel-3.8.2-7.el5_2.2.ppc.rpm
libtiff-devel-3.8.2-7.el5_2.2.ppc64.rpm

s390x:
libtiff-3.8.2-7.el5_2.2.s390.rpm
libtiff-3.8.2-7.el5_2.2.s390x.rpm
libtiff-debuginfo-3.8.2-7.el5_2.2.s390.rpm
libtiff-debuginfo-3.8.2-7.el5_2.2.s390x.rpm
libtiff-devel-3.8.2-7.el5_2.2.s390.rpm
libtiff-devel-3.8.2-7.el5_2.2.s390x.rpm

x86_64:
libtiff-3.8.2-7.el5_2.2.i386.rpm
libtiff-3.8.2-7.el5_2.2.x86_64.rpm
libtiff-debuginfo-3.8.2-7.el5_2.2.i386.rpm
libtiff-debuginfo-3.8.2-7.el5_2.2.x86_64.rpm
libtiff-devel-3.8.2-7.el5_2.2.i386.rpm
libtiff-devel-3.8.2-7.el5_2.2.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-2008-2327
http://www.redhat.com/security/updates/classification/#important

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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