__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Red Hat Xpdf Packages Vulnerability [RHSA-2003:037-09] 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 vulnerable. 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 Xpdf. ______________________________________________________________________________ LINKS: 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 Details: 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 -------------------------------------------------------------------------------- SRPMS: xpdf-0.92-1.62.0.src.rpm [ via FTP ] [ via HTTP ] 14f5a760b10a2022fe11b13a608679e4 i386: xpdf-0.92-1.62.0.i386.rpm [ via FTP ] [ via HTTP ] 84273042eac769bca8e0ae41e40cbb51 Red Hat Linux 7.0 -------------------------------------------------------------------------------- SRPMS: xpdf-0.92-2.70.0.src.rpm [ via FTP ] [ via HTTP ] 2ec914d67d16b66eb4777793c4927d2b i386: xpdf-0.92-2.70.0.i386.rpm [ via FTP ] [ via HTTP ] e9f8f9b571951d832dcfe6310c222600 Red Hat Linux 7.1 -------------------------------------------------------------------------------- SRPMS: xpdf-0.92-4.71.0.src.rpm [ via FTP ] [ via HTTP ] 777407e0f43e7586f4ef22681eb5311b i386: xpdf-0.92-4.71.0.i386.rpm [ via FTP ] [ via HTTP ] 69f703be285030506d5775c7e258353e Red Hat Linux 7.2 -------------------------------------------------------------------------------- SRPMS: xpdf-0.92-8.src.rpm [ via FTP ] [ via HTTP ] 6aef839487e9ef365c8a1e083cdb8d40 i386: xpdf-0.92-8.i386.rpm [ via FTP ] [ via HTTP ] a5b8632b5e3fdae729fd138c79511f37 ia64: xpdf-0.92-8.ia64.rpm [ via FTP ] [ via HTTP ] 9833d7aaa358bf91daac2927d85ecca4 Red Hat Linux 7.3 -------------------------------------------------------------------------------- SRPMS: xpdf-1.00-5.src.rpm [ via FTP ] [ via HTTP ] d3f8e5d7bbfe3c10c924b8e8e2c855e2 i386: xpdf-1.00-5.i386.rpm [ via FTP ] [ via HTTP ] 970dcce631dd221352e4079de6fc8cc8 xpdf-chinese-simplified-1.00-5.i386.rpm [ via FTP ] [ via HTTP ] 1281db16a674bbba70a40f22b8da44c1 xpdf-chinese-traditional-1.00-5.i386.rpm [ via FTP ] [ via HTTP ] f9ad4618251a7aaabc62767dda269177 xpdf-japanese-1.00-5.i386.rpm [ via FTP ] [ via HTTP ] c796d0feb9f67344104393c82c4c707c xpdf-korean-1.00-5.i386.rpm [ via FTP ] [ via HTTP ] 8313eca768d1741372b18a304400bec9 Red Hat Linux 8.0 -------------------------------------------------------------------------------- SRPMS: xpdf-1.01-10.src.rpm [ via FTP ] [ via HTTP ] d9e8a55e8fc1a1c2accf738372f541f1 i386: xpdf-1.01-10.i386.rpm [ via FTP ] [ via HTTP ] 5ff0fab12ef736f60e9d9608a4c17d59 xpdf-chinese-simplified-1.01-10.i386.rpm [ via FTP ] [ via HTTP ] b175f4484b7b652164b4065b9c04f700 xpdf-chinese-traditional-1.01-10.i386.rpm [ via FTP ] [ via HTTP ] b79bb5155ef492835453dd0eb07af345 xpdf-japanese-1.01-10.i386.rpm [ via FTP ] [ via HTTP ] 15058d3a0a53536f6300d4e5c52c00b1 xpdf-korean-1.01-10.i386.rpm [ via FTP ] [ via HTTP ] 028755012a882c6ed4024b7b4c601911 Solution 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: up2date This will start an interactive process that will result in the appropriate RPMs being upgraded on your system. References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-1384 -------------------------------------------------------------------------------- The listed packages are GPG signed by Red Hat, Inc. for security. Our key is available at: http://www.redhat.com/solutions/security/news/publickey.html#key 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 http://www.redhat.com/solutions/security/news/contact.html [***** 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 owned rights. Reference herein to any specific commercial products, process, or service by trade name, trademark, manufacturer, or 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 herein do not necessarily state or reflect those of the United States Government or the University of California, and shall not be used for advertising or product endorsement purposes. 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