TUCoPS :: Linux :: Red Hat/Fedora :: n-040.txt

Red Hat Xpdf Packages Vulnerability (CIAC N-040)


                       The U.S. Department of Energy
                   Computer Incident Advisory Capability
                           ___  __ __    _     ___
                          /       |     /_\   /
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                             INFORMATION BULLETIN

                      Red Hat Xpdf Packages Vulnerability

February 6, 2003 19:00 GMT                                        Number N-040
PROBLEM:       A integer overflow vulnerability has been identified in the 
               pdftops filter. Since the code for pdftops is taken from the 
               Xpdf project, all versions of Xpdf including 2.01 are 
PLATFORM:      Red Hat Linux 6.2 
               Red Hat Linux 7.0 
               Red Hat Linux 7.1 
               Red Hat Linux 7.2 
               Red Hat Linux 7.3 
               Red Hat Linux 8.0 
DAMAGE:        A maliciously-crafted pdf document could run arbitrary code. 
SOLUTION:      Apply correct upgrade, reference list in the advisory 
VULNERABILITY  The risk is HIGH. If exploited, the attacker could have the 
ASSESSMENT:    same access privileges as the user who viewed the file with 
 CIAC BULLETIN:      http://www.ciac.org/ciac/bulletins/n-040.shtml 
 ORIGINAL BULLETIN:  https://rhn.redhat.com/errata/RHSA-2003-037.html 
[***** Start RHSA-2003:037-09 *****]

 Updated Xpdf packages fix security vulnerability

Advisory: RHSA-2003:037-09 
Last updated on: 2003-02-06 
Affected Products: Red Hat Linux 6.2
Red Hat Linux 7.0
Red Hat Linux 7.1
Red Hat Linux 7.2
Red Hat Linux 7.3
Red Hat Linux 8.0 
CVEs (cve.mitre.org): CAN-2002-1384

   Security Advisory 


Updated Xpdf packages are now available that fix a vulnerability in which a
maliciously-crafted pdf document could run arbitrary code.

Xpdf is a viewer for Portable Document Format (PDF) files.

During an audit of CUPS, a printing system, Zen Parsec found an integer
overflow vulnerability in the pdftops filter. Since the code for pdftops
is taken from the Xpdf project, all versions of Xpdf including 2.01 are
also vulnerable to this issue. An attacker could create a PDF file that 
could execute arbitrary code. This could would have the same access 
privileges as the user who viewed the file with Xpdf.

All users of Xpdf are advised to upgrade to these erratum packages. For
Red Hat Linux 8.0 we have included new packages based on Xpdf 1.01 with a
patch to correct this issue. For Red Hat Linux 7.0, 7.1, 7.2, and 7.3 we
have upgraded Xpdf to version 1.00 with a patch to correct this issue. For
Red Hat Linux 6.2 we have upgraded Xpdf to version 0.92 with a patch to
correct this issue.

Updated packages:

Red Hat Linux 6.2 

[ via FTP ] [ via HTTP ]     14f5a760b10a2022fe11b13a608679e4 
[ via FTP ] [ via HTTP ]     84273042eac769bca8e0ae41e40cbb51 
Red Hat Linux 7.0 

[ via FTP ] [ via HTTP ]     2ec914d67d16b66eb4777793c4927d2b 
[ via FTP ] [ via HTTP ]     e9f8f9b571951d832dcfe6310c222600 
Red Hat Linux 7.1 

[ via FTP ] [ via HTTP ]     777407e0f43e7586f4ef22681eb5311b 
[ via FTP ] [ via HTTP ]     69f703be285030506d5775c7e258353e 
Red Hat Linux 7.2 

[ via FTP ] [ via HTTP ]     6aef839487e9ef365c8a1e083cdb8d40 
[ via FTP ] [ via HTTP ]     a5b8632b5e3fdae729fd138c79511f37 
[ via FTP ] [ via HTTP ]     9833d7aaa358bf91daac2927d85ecca4 
Red Hat Linux 7.3 

[ via FTP ] [ via HTTP ]     d3f8e5d7bbfe3c10c924b8e8e2c855e2 
[ via FTP ] [ via HTTP ]     970dcce631dd221352e4079de6fc8cc8 
[ via FTP ] [ via HTTP ]     1281db16a674bbba70a40f22b8da44c1 
[ via FTP ] [ via HTTP ]     f9ad4618251a7aaabc62767dda269177 
[ via FTP ] [ via HTTP ]     c796d0feb9f67344104393c82c4c707c 
[ via FTP ] [ via HTTP ]     8313eca768d1741372b18a304400bec9 
Red Hat Linux 8.0 

[ via FTP ] [ via HTTP ]     d9e8a55e8fc1a1c2accf738372f541f1 
[ via FTP ] [ via HTTP ]     5ff0fab12ef736f60e9d9608a4c17d59 
[ via FTP ] [ via HTTP ]     b175f4484b7b652164b4065b9c04f700 
[ via FTP ] [ via HTTP ]     b79bb5155ef492835453dd0eb07af345 
[ via FTP ] [ via HTTP ]     15058d3a0a53536f6300d4e5c52c00b1 
[ via FTP ] [ via HTTP ]     028755012a882c6ed4024b7b4c601911 


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

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade. Only those
RPMs which are currently installed will be updated. Those RPMs which are
not installed but included in the list will not be updated. Note that you
can also use wildcards (*.rpm) if your current directory *only* contains the
desired RPMs.

Please note that this update is also available via Red Hat Network. Many
people find this an easier way to apply updates. To use Red Hat Network,
launch the Red Hat Update Agent with the following command:


This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.



The listed packages are GPG signed by Red Hat, Inc. for security. Our key is available 
You can verify each package and see who signed it with the following command:

rpm --checksig -v filename 
If you only wish to verify that each package has not been corrupted or tampered with, 
examine only the md5sum with the following command:

md5sum filename 
Note that you need RPM >= 3.0 to check GnuPG keys. 

The Red Hat security contact is security@redhat.com. More contact details at 

[***** End RHSA-2003:037-09 *****]

CIAC wishes to acknowledge the contributions of Red Hat for the 
information contained in this bulletin.

CIAC, the Computer Incident Advisory Capability, is the computer
security incident response team for the U.S. Department of Energy
(DOE) and the emergency backup response team for the National
Institutes of Health (NIH). CIAC is located at the Lawrence Livermore
National Laboratory in Livermore, California. CIAC is also a founding
member of FIRST, the Forum of Incident Response and Security Teams, a
global organization established to foster cooperation and coordination
among computer security teams worldwide.

CIAC services are available to DOE, DOE contractors, and the NIH. CIAC
can be contacted at:
    Voice:    +1 925-422-8193 (7x24)
    FAX:      +1 925-423-8002
    STU-III:  +1 925-423-2604
    E-mail:   ciac@ciac.org

Previous CIAC notices, anti-virus software, and other information are
available from the CIAC Computer Security Archive.

   World Wide Web:      http://www.ciac.org/
   Anonymous FTP:       ftp.ciac.org

PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing
communities receive CIAC bulletins.  If you are not part of these
communities, please contact your agency's response team to report
incidents. Your agency's team will coordinate with CIAC. The Forum of
Incident Response and Security Teams (FIRST) is a world-wide
organization. A list of FIRST member organizations and their
constituencies can be obtained via WWW at http://www.first.org/.

This document was prepared as an account of work sponsored by an
agency of the United States Government. Neither the United States
Government nor the University of California nor any of their
employees, makes any warranty, express or implied, or assumes any
legal liability or responsibility for the accuracy, completeness, or
usefulness of any information, apparatus, product, or process
disclosed, or represents that its use would not infringe privately
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otherwise, does not necessarily constitute or imply its endorsement,
recommendation or favoring by the United States Government or the
University of California. The views and opinions of authors expressed
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Government or the University of California, and shall not be used for
advertising or product endorsement purposes.

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