__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN 'tcpdump' Denial of Service [Debian Security Advisory DSA-478-1] April 9, 2004 23:00 GMT Number O-113 [REVISED 26 May 2004] [REVISED 23 Jun 2004] ______________________________________________________________________________ PROBLEM: Tcpdump, a tool for network monitoring and data acquisitions, contains two vulnerabilities. PLATFORM: Debian GNU/Linux 3.0 (woody) Red Hat Desktop (v.3) Red Hat Enterprise Linux AS (v.2.1 & v.3) Red Hat Enterprise Linux ES (v.2.1 & v.3) Red Hat Enterprise Linux WS (v.2.1 & v.3) Red Hat Linux Advanced Workstation 2.1 for the Itanium Processor SGI ProPack v2.4 - Altix systems SGI ProPack v3 - Altix systems DAMAGE: Given certain ISAKMP packets, tcpdump may crash through attempts to read from invalid memory locations. SOLUTION: Install updated packages. ______________________________________________________________________________ VULNERABILITY The risk is LOW. May cause denial of service. ASSESSMENT: ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/o-113.shtml ORIGINAL BULLETIN: http://www.debian.org/security/2004/dsa-478 ADDITIONAL LINKS: Red Hat RHSA-2004:219-07 https://rhn.redhat.com/errata/RHSA-2004-219.html SGI #20040602-01-U for ProPack v2.4 - Patch #10079 ftp://patches.sgi.com/support/free/security/advisories/ 20040602-01-U.asc" SGI #20040603-01-U for SGI ProPack 3 - Patch #10080 ftp://patches.sgi.com/support/free/security/advisories/ 20040603-01-U.asc" CVE/CAN: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CAN-2004-0183, CAN-2004-0184 ______________________________________________________________________________ REVISION HISTORY: 05/26/2004 - Updated to add a link to Red Hat RHSA-2004:219-07 and to update the PLATFORM Section. 06/23/2004 - Added links for the two new releases of SGI Security Advisories/Patches and updated the PLATFORM section. [***** Start Debian Security Advisory DSA-478-1 *****] Debian Security Advisory DSA-478-1 tcpdump -- denial of service Date Reported: 06 Apr 2004 Affected Packages: tcpdump Vulnerable: Yes Security database references: In Mitre's CVE dictionary: CAN-2004-0183, CAN-2004-0184. More information: tcpdump, a tool for network monitoring and data acquisition, was found to contain two vulnerabilities whereby tcpdump could be caused to crash through attempts to read from invalid memory locations. This bug is triggered by certain invalid ISAKMP packets. For the current stable distribution (woody) these problems have been fixed in version 3.6.2-2.8. For the unstable distribution (sid), these problems have been fixed in version 3.7.2-4. We recommend that you update your tcpdump package. Fixed in: Debian GNU/Linux 3.0 (woody) Source: http://security.debian.org/pool/updates/main/t/tcpdump/tcpdump_3.6.2-2.8.dsc http://security.debian.org/pool/updates/main/t/tcpdump/tcpdump_3.6.2-2.8.diff.gz http://security.debian.org/pool/updates/main/t/tcpdump/tcpdump_3.6.2.orig.tar.gz Alpha: http://security.debian.org/pool/updates/main/t/tcpdump/tcpdump_3.6.2-2.8_alpha.deb ARM: http://security.debian.org/pool/updates/main/t/tcpdump/tcpdump_3.6.2-2.8_arm.deb Intel IA-32: http://security.debian.org/pool/updates/main/t/tcpdump/tcpdump_3.6.2-2.8_i386.deb Intel IA-64: http://security.debian.org/pool/updates/main/t/tcpdump/tcpdump_3.6.2-2.8_ia64.deb HPPA: http://security.debian.org/pool/updates/main/t/tcpdump/tcpdump_3.6.2-2.8_hppa.deb Motorola 680x0: http://security.debian.org/pool/updates/main/t/tcpdump/tcpdump_3.6.2-2.8_m68k.deb Big endian MIPS: http://security.debian.org/pool/updates/main/t/tcpdump/tcpdump_3.6.2-2.8_mips.deb Little endian MIPS: http://security.debian.org/pool/updates/main/t/tcpdump/tcpdump_3.6.2-2.8_mipsel.deb PowerPC: http://security.debian.org/pool/updates/main/t/tcpdump/tcpdump_3.6.2-2.8_powerpc.deb IBM S/390: http://security.debian.org/pool/updates/main/t/tcpdump/tcpdump_3.6.2-2.8_s390.deb Sun Sparc: http://security.debian.org/pool/updates/main/t/tcpdump/tcpdump_3.6.2-2.8_sparc.deb MD5 checksums of the listed files are available in the original advisory. [***** End Debian Security Advisory DSA-478-1 *****] _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Debian 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. 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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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