__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Ethereal Multiple Vulnerabilities [Ethereal Docid: enpa-sa-00016] December 15, 2004 19:00 GMT Number P-061 [REVISED 21 Dec 2004] [REVISED 02 Feb 2005] [REVISED 14 Feb 2005] [REVISED 22 Feb 2005] ______________________________________________________________________________ PROBLEM: Multiple vulnerabilities have been identified by Ethereal: - a bug in DICOM dissection - an invalid RTP timestamp - memory access issue in the HTTP dissector - handling of improperly formatted SMB packets SOFTWARE: Ethereal versions range from 0.9.0 thru 0.10.7 Debian GNU/Linux 3.0 (woody) Red Hat Desktop (v. 3) and (v. 4) Red Hat Enterprise Linux AS, ES, WS (v. 2.1, v.3 and v.4) Red Hat Linux Advanced Workstation 2.1 for the Itanium Processor SGI ProPack 3 Service Pack 3 DAMAGE: Execution of arbitrary code or a denial of service may be possible. SOLUTION: Upgrade to version 0.10.8. ______________________________________________________________________________ VULNERABILITY The risk is HIGH. Ethereal is a widely used packet sniffer and ASSESSMENT: must be run as root. It may be possible to run arbitrary code or cause a crash. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/p-061.shtml ORIGINAL BULLETIN: http://www.ethereal.com/appnotes/enpa-sa-00016.html ADDITIONAL LINKS: http://www.debian.org/security/2004/dsa-513 Red Hat Security Advisory RHSA-2005:011-11 https://rhn.redhat.com/errata/RHSA-2005-011.html SGI Security Advisory Update #26, 20050202-01-U http://www.sgi.com/support/security/advisories.html Red Hat Security Advisory RHSA-2005:037 https://rhn.redhat.com/errata/RHSA-2005-037.html CVE/CAN: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CAN-2004-1139 CAN-2004-1140 CAN-2004-1141 CAN-2004-1142 ______________________________________________________________________________ REVISION HISTORY: 12/21/2004 - added link to updated Debian Ethereal packages available through Security Advisory DSA-613-1. 02/02/2005 - added link to updated Red Hat Ethereal packages available through Red Hat Security Advisory RHSA-2005:011-11. 02/14/2005 - added link to SGI Security Advisory Update #26, 20050202-01-U that provides a patch that includes updated SGI ProPack 3 Service Pack 3 RPMs for the SGI Altix family of systems. 02/22/2005 - added link to Red Hat RHSA-2005:307 that provides updated packages for Red Hat version 4. [***** Start Ethereal Docid: enpa-sa-00016 *****] Summary Name: Multiple problems in Ethereal versions 0.9.0 to 0.10.7 Docid: enpa-sa-00016 Date: December 15, 2004 Versions affected: 0.9.0 up to and including 0.10.7 Severity: High Details Description: Issues have been discovered in the following protocol dissectors: Matthew Bing discovered a bug in DICOM dissection that could make Ethereal crash. Versions affected: 0.10.4 - 0.10.7 CVE: CAN-2004-1139 An invalid RTP timestamp could make Ethereal hang and create a large temporary file, possibly filling available disk space. Versions affected: 0.9.16 - 0.10.7 CVE: CAN-2004-1140 The HTTP dissector could access previously-freed memory, causing a crash. Versions affected: 0.10.1 - 0.10.7 CVE: CAN-2004-1141 Brian Caswell discovered that an improperly formatted SMB packet could make Ethereal hang, maximizing CPU utilization. Versions affected: 0.9.0 - 0.10.7 CVE: CAN-2004-1142 Impact: It may be possible to make Ethereal crash or run arbitrary code by injecting a purposefully malformed packet onto the wire or by convincing someone to read a malformed packet trace file. Resolution: Upgrade to 0.10.8. If you are running a version prior to 0.10.8 and you cannot upgrade, you can disable the HTTP, DICOM, and SMB protocol dissectors by selecting Analyze->Enabled Protocols... and deselecting them from the list. However, it is strongly recommended that you upgrade to 0.10.8. Please send support questions about Ethereal to the ethereal-users[AT]ethereal.com mailing list. For corrections/additions/suggestions for this web page (and not Ethereal support questions), please send email to ethereal-web[AT]ethereal.com . Last modified: Wed, December 15 2004. [***** End Ethereal Docid: enpa-sa-00016 *****] _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Ethereal 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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