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Category:   Application (Generic)  >   Xpdf Vendors:   Glyph and Cog
(Red Hat Issues Fix) Xpdf Bug in Processing Embedded Fonts Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1019895
SecurityTracker URL:  http://securitytracker.com/id/1019895
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  
Version(s): 3.02
Description:   A vulnerability was reported in Xpdf. A remote user can cause arbitrary code to be executed on the target user's system.

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.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2008-0240.html

Vendor URL:  www.foolabs.com/xpdf/ (Links to External Site)
Cause:   Input validation error, State error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  4

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-2008:0240-01] Important: xpdf security update


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

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

Synopsis:          Important: xpdf security update
Advisory ID:       RHSA-2008:0240-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2008-0240.html
Issue date:        2008-04-17
CVE Names:         CVE-2008-1693 
=====================================================================

1. Summary:

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

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 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

3. Description:

Xpdf is an X Window System-based viewer for Portable Document Format (PDF)
files.

Kees Cook discovered a flaw in the way xpdf displayed malformed fonts
embedded in PDF files. An attacker could create a malicious PDF file that
would cause xpdf 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 AS version 4:

Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/xpdf-3.00-16.el4.src.rpm

i386:
xpdf-3.00-16.el4.i386.rpm
xpdf-debuginfo-3.00-16.el4.i386.rpm

ia64:
xpdf-3.00-16.el4.ia64.rpm
xpdf-debuginfo-3.00-16.el4.ia64.rpm

ppc:
xpdf-3.00-16.el4.ppc.rpm
xpdf-debuginfo-3.00-16.el4.ppc.rpm

s390:
xpdf-3.00-16.el4.s390.rpm
xpdf-debuginfo-3.00-16.el4.s390.rpm

s390x:
xpdf-3.00-16.el4.s390x.rpm
xpdf-debuginfo-3.00-16.el4.s390x.rpm

x86_64:
xpdf-3.00-16.el4.x86_64.rpm
xpdf-debuginfo-3.00-16.el4.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/xpdf-3.00-16.el4.src.rpm

i386:
xpdf-3.00-16.el4.i386.rpm
xpdf-debuginfo-3.00-16.el4.i386.rpm

x86_64:
xpdf-3.00-16.el4.x86_64.rpm
xpdf-debuginfo-3.00-16.el4.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/xpdf-3.00-16.el4.src.rpm

i386:
xpdf-3.00-16.el4.i386.rpm
xpdf-debuginfo-3.00-16.el4.i386.rpm

ia64:
xpdf-3.00-16.el4.ia64.rpm
xpdf-debuginfo-3.00-16.el4.ia64.rpm

x86_64:
xpdf-3.00-16.el4.x86_64.rpm
xpdf-debuginfo-3.00-16.el4.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

Source:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/xpdf-3.00-16.el4.src.rpm

i386:
xpdf-3.00-16.el4.i386.rpm
xpdf-debuginfo-3.00-16.el4.i386.rpm

ia64:
xpdf-3.00-16.el4.ia64.rpm
xpdf-debuginfo-3.00-16.el4.ia64.rpm

x86_64:
xpdf-3.00-16.el4.x86_64.rpm
xpdf-debuginfo-3.00-16.el4.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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