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Category:   Application (Generic)  >   Poppler Vendors:   Freedesktop.org
(Red Hat Issues Fix for Poppler) Xpdf Bug in Processing Embedded Fonts Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1019899
SecurityTracker URL:  http://securitytracker.com/id/1019899
CVE Reference:   CVE-2008-1693   (Links to External Site)
Date:  Apr 17 2008
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Xpdf. A remote user can cause arbitrary code to be executed on the target user's system. Poppler is affected.

A remote user can create a PDF file with specially crafted embedded fonts that, when loaded by the target user, will execute arbitrary code on the target system. The code will run with the privileges of the target user.

The vulnerability resides in the CairoFont::create() function in 'CairoFontEngine.cc' (from the Poppler code base).

Kees Cook from the Ubuntu Security Team reported this vulnerability.

Impact:   A remote user can create a file that, when loaded by the target user, will execute arbitrary code on the target user's system.
Solution:   Red Hat has released a fix for poppler, which is affected by this vulnerability.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2008-0239.html

Cause:   Input validation error, State error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  5

Message History:   This archive entry is a follow-up to the message listed below.
Apr 17 2008 Xpdf Bug in Processing Embedded Fonts Lets Remote Users Execute Arbitrary Code



 Source Message Contents

Subject:  [RHSA-2008:0239-01] Important: poppler security update


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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: poppler security update
Advisory ID:       RHSA-2008:0239-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2008-0239.html
Issue date:        2008-04-17
CVE Names:         CVE-2008-1693 
=====================================================================

1. Summary:

Updated poppler packages that fix a security issue 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:

Poppler is a PDF rendering library, used by applications such as Evince.

Kees Cook discovered a flaw in the way poppler displayed malformed fonts
embedded in PDF files. An attacker could create a malicious PDF file that
would cause applications that use poppler -- such as Evince -- to crash,
or, potentially, execute arbitrary code when opened. (CVE-2008-1693)

Users are advised to upgrade to these updated packages, which contain
backported patches 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/):


6. Package List:

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/poppler-0.5.4-4.4.el5_1.src.rpm

i386:
poppler-0.5.4-4.4.el5_1.i386.rpm
poppler-debuginfo-0.5.4-4.4.el5_1.i386.rpm
poppler-utils-0.5.4-4.4.el5_1.i386.rpm

x86_64:
poppler-0.5.4-4.4.el5_1.i386.rpm
poppler-0.5.4-4.4.el5_1.x86_64.rpm
poppler-debuginfo-0.5.4-4.4.el5_1.i386.rpm
poppler-debuginfo-0.5.4-4.4.el5_1.x86_64.rpm
poppler-utils-0.5.4-4.4.el5_1.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/poppler-0.5.4-4.4.el5_1.src.rpm

i386:
poppler-debuginfo-0.5.4-4.4.el5_1.i386.rpm
poppler-devel-0.5.4-4.4.el5_1.i386.rpm

x86_64:
poppler-debuginfo-0.5.4-4.4.el5_1.i386.rpm
poppler-debuginfo-0.5.4-4.4.el5_1.x86_64.rpm
poppler-devel-0.5.4-4.4.el5_1.i386.rpm
poppler-devel-0.5.4-4.4.el5_1.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/poppler-0.5.4-4.4.el5_1.src.rpm

i386:
poppler-0.5.4-4.4.el5_1.i386.rpm
poppler-debuginfo-0.5.4-4.4.el5_1.i386.rpm
poppler-devel-0.5.4-4.4.el5_1.i386.rpm
poppler-utils-0.5.4-4.4.el5_1.i386.rpm

ia64:
poppler-0.5.4-4.4.el5_1.ia64.rpm
poppler-debuginfo-0.5.4-4.4.el5_1.ia64.rpm
poppler-devel-0.5.4-4.4.el5_1.ia64.rpm
poppler-utils-0.5.4-4.4.el5_1.ia64.rpm

ppc:
poppler-0.5.4-4.4.el5_1.ppc.rpm
poppler-0.5.4-4.4.el5_1.ppc64.rpm
poppler-debuginfo-0.5.4-4.4.el5_1.ppc.rpm
poppler-debuginfo-0.5.4-4.4.el5_1.ppc64.rpm
poppler-devel-0.5.4-4.4.el5_1.ppc.rpm
poppler-devel-0.5.4-4.4.el5_1.ppc64.rpm
poppler-utils-0.5.4-4.4.el5_1.ppc.rpm

s390x:
poppler-0.5.4-4.4.el5_1.s390.rpm
poppler-0.5.4-4.4.el5_1.s390x.rpm
poppler-debuginfo-0.5.4-4.4.el5_1.s390.rpm
poppler-debuginfo-0.5.4-4.4.el5_1.s390x.rpm
poppler-devel-0.5.4-4.4.el5_1.s390.rpm
poppler-devel-0.5.4-4.4.el5_1.s390x.rpm
poppler-utils-0.5.4-4.4.el5_1.s390x.rpm

x86_64:
poppler-0.5.4-4.4.el5_1.i386.rpm
poppler-0.5.4-4.4.el5_1.x86_64.rpm
poppler-debuginfo-0.5.4-4.4.el5_1.i386.rpm
poppler-debuginfo-0.5.4-4.4.el5_1.x86_64.rpm
poppler-devel-0.5.4-4.4.el5_1.i386.rpm
poppler-devel-0.5.4-4.4.el5_1.x86_64.rpm
poppler-utils-0.5.4-4.4.el5_1.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-2008-1693
http://www.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2008 Red Hat, Inc.
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