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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2002.543 -- RHSA-2002:094-16 Updated tcpdump packages fix buffer overflow 08 October 2002 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: tcpdump Vendor: Red Hat Operating System: Red Hat Linux 6.2 Red Hat Linux 7.0 Red Hat Linux 7.1 Red Hat Linux 7.2 Platform: Alpha i386 IA-64 SPARC Impact: Denial of Service Execute Arbitrary Code/Commands Access Required: Remote Ref: ESB-2002.252 - --------------------------BEGIN INCLUDED TEXT-------------------- - --------------------------------------------------------------------- Red Hat, Inc. Red Hat Security Advisory Synopsis: Updated tcpdump packages fix buffer overflow Advisory ID: RHSA-2002:094-16 Issue date: 2002-05-17 Updated on: 2002-10-04 Product: Red Hat Linux Keywords: tcpdump arpwatch buffer overflow Cross references: Obsoletes: RHSA-2001:089-10 CVE Names: CAN-2002-0380 - --------------------------------------------------------------------- 1. Topic: Updated tcpdump, libpcap, and arpwatch packages are available for Red Hat Linux 6.2 and 7.x. These updates close a buffer overflow when handling NFS packets. [Update 3 October 2002] Replacement packages have been added for Red Hat Linux 6.2 as the previous packages could not be installed with the version of RPM that shipped with Red Hat Linux 6.2. Replacement packages have also been added for Red Hat Linux 7.0 as the previous packages were not built correctly. 2. Relevant releases/architectures: Red Hat Linux 6.2 - alpha, i386, sparc Red Hat Linux 7.0 - alpha, i386 Red Hat Linux 7.1 - alpha, i386, ia64 Red Hat Linux 7.2 - i386, ia64 3. Problem description: tcpdump is a command-line tool for monitoring network traffic. Versions of tcpdump up to and including 3.6.2 have a buffer overflow that can be triggered when tracing the network by a bad NFS packet. We are not yet aware if this issue is fully exploitable; however, users of tcpdump are advised to upgrade to these errata packages which contain a patch for this issue. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2002-0380 to this issue. This issue was found by David Woodhouse of Red Hat. 4. 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. 5. Bug IDs fixed (http://bugzilla.redhat.com/bugzilla for more info): 55145 - tcpdump segfaults when displaying NFS traffic. 63113 - Start script refers to non/existing /etc/init.d directory 6. RPMs required: Red Hat Linux 6.2: SRPMS: ftp://updates.redhat.com/6.2/en/os/SRPMS/tcpdump-3.6.2-11.6.2.2.src.rpm alpha: ftp://updates.redhat.com/6.2/en/os/alpha/tcpdump-3.6.2-11.6.2.2.alpha.rpm ftp://updates.redhat.com/6.2/en/os/alpha/libpcap-0.6.2-11.6.2.2.alpha.rpm ftp://updates.redhat.com/6.2/en/os/alpha/arpwatch-2.1a11-11.6.2.2.alpha.rpm i386: ftp://updates.redhat.com/6.2/en/os/i386/tcpdump-3.6.2-11.6.2.2.i386.rpm ftp://updates.redhat.com/6.2/en/os/i386/libpcap-0.6.2-11.6.2.2.i386.rpm ftp://updates.redhat.com/6.2/en/os/i386/arpwatch-2.1a11-11.6.2.2.i386.rpm sparc: ftp://updates.redhat.com/6.2/en/os/sparc/tcpdump-3.6.2-11.6.2.2.sparc.rpm ftp://updates.redhat.com/6.2/en/os/sparc/libpcap-0.6.2-11.6.2.2.sparc.rpm ftp://updates.redhat.com/6.2/en/os/sparc/arpwatch-2.1a11-11.6.2.2.sparc.rpm Red Hat Linux 7.0: SRPMS: ftp://updates.redhat.com/7.0/en/os/SRPMS/tcpdump-3.6.2-11.7.0.1.src.rpm alpha: ftp://updates.redhat.com/7.0/en/os/alpha/tcpdump-3.6.2-11.7.0.1.alpha.rpm ftp://updates.redhat.com/7.0/en/os/alpha/libpcap-0.6.2-11.7.0.1.alpha.rpm ftp://updates.redhat.com/7.0/en/os/alpha/arpwatch-2.1a11-11.7.0.1.alpha.rpm i386: ftp://updates.redhat.com/7.0/en/os/i386/tcpdump-3.6.2-11.7.0.1.i386.rpm ftp://updates.redhat.com/7.0/en/os/i386/libpcap-0.6.2-11.7.0.1.i386.rpm ftp://updates.redhat.com/7.0/en/os/i386/arpwatch-2.1a11-11.7.0.1.i386.rpm Red Hat Linux 7.1: SRPMS: ftp://updates.redhat.com/7.1/en/os/SRPMS/tcpdump-3.6.2-11.7.1.0.src.rpm alpha: ftp://updates.redhat.com/7.1/en/os/alpha/tcpdump-3.6.2-11.7.1.0.alpha.rpm ftp://updates.redhat.com/7.1/en/os/alpha/libpcap-0.6.2-11.7.1.0.alpha.rpm ftp://updates.redhat.com/7.1/en/os/alpha/arpwatch-2.1a11-11.7.1.0.alpha.rpm i386: ftp://updates.redhat.com/7.1/en/os/i386/tcpdump-3.6.2-11.7.1.0.i386.rpm ftp://updates.redhat.com/7.1/en/os/i386/libpcap-0.6.2-11.7.1.0.i386.rpm ftp://updates.redhat.com/7.1/en/os/i386/arpwatch-2.1a11-11.7.1.0.i386.rpm ia64: ftp://updates.redhat.com/7.1/en/os/ia64/tcpdump-3.6.2-11.7.1.0.ia64.rpm ftp://updates.redhat.com/7.1/en/os/ia64/libpcap-0.6.2-11.7.1.0.ia64.rpm ftp://updates.redhat.com/7.1/en/os/ia64/arpwatch-2.1a11-11.7.1.0.ia64.rpm Red Hat Linux 7.2: SRPMS: ftp://updates.redhat.com/7.2/en/os/SRPMS/tcpdump-3.6.2-11.7.2.0.src.rpm i386: ftp://updates.redhat.com/7.2/en/os/i386/tcpdump-3.6.2-11.7.2.0.i386.rpm ftp://updates.redhat.com/7.2/en/os/i386/libpcap-0.6.2-11.7.2.0.i386.rpm ftp://updates.redhat.com/7.2/en/os/i386/arpwatch-2.1a11-11.7.2.0.i386.rpm ia64: ftp://updates.redhat.com/7.2/en/os/ia64/tcpdump-3.6.2-11.7.2.0.ia64.rpm ftp://updates.redhat.com/7.2/en/os/ia64/libpcap-0.6.2-11.7.2.0.ia64.rpm ftp://updates.redhat.com/7.2/en/os/ia64/arpwatch-2.1a11-11.7.2.0.ia64.rpm 7. Verification: MD5 sum Package Name - -------------------------------------------------------------------------- 0d1978ac6fbf008d559ba4c6732f21e7 6.2/en/os/SRPMS/tcpdump-3.6.2-11.6.2.2.src.rpm db348001b61114bdc5dbfb8aacec9c4b 6.2/en/os/alpha/arpwatch-2.1a11-11.6.2.2.alpha.rpm 6db33d48ac163d3bc0aeb5c1c215f549 6.2/en/os/alpha/libpcap-0.6.2-11.6.2.2.alpha.rpm 4b2a073b84675781df605ada020926d7 6.2/en/os/alpha/tcpdump-3.6.2-11.6.2.2.alpha.rpm c82c835a28a5cd191cbc660cb63a0325 6.2/en/os/i386/arpwatch-2.1a11-11.6.2.2.i386.rpm 50819dab95623b007dcb1364be15697e 6.2/en/os/i386/libpcap-0.6.2-11.6.2.2.i386.rpm 47038e2ab0d9d978592605601b51d8d4 6.2/en/os/i386/tcpdump-3.6.2-11.6.2.2.i386.rpm 918d817dfecbfa52f485a634f6eff5d1 6.2/en/os/sparc/arpwatch-2.1a11-11.6.2.2.sparc.rpm b7e2e105bc460df515a29b9a2540622a 6.2/en/os/sparc/libpcap-0.6.2-11.6.2.2.sparc.rpm 0dbbc51da0998ccebf2a7a790f5f77af 6.2/en/os/sparc/tcpdump-3.6.2-11.6.2.2.sparc.rpm 520dd6721b416315adfa815ccbf1c9e1 7.0/en/os/SRPMS/tcpdump-3.6.2-11.7.0.1.src.rpm b1b439b8b84cbd8f1288c964547571e0 7.0/en/os/alpha/arpwatch-2.1a11-11.7.0.1.alpha.rpm a45bd661561b2307c2853430f3183367 7.0/en/os/alpha/libpcap-0.6.2-11.7.0.1.alpha.rpm 9970d0be7edeb613cf7087d5acdf48d4 7.0/en/os/alpha/tcpdump-3.6.2-11.7.0.1.alpha.rpm d677bbce990410dc9b203be3fc005c79 7.0/en/os/i386/arpwatch-2.1a11-11.7.0.1.i386.rpm dbab830179454642ee4e6070379467ac 7.0/en/os/i386/libpcap-0.6.2-11.7.0.1.i386.rpm 7025f66b80b8c164a2db05c364c1c805 7.0/en/os/i386/tcpdump-3.6.2-11.7.0.1.i386.rpm 27bf8dea340db81f1e946356c6bef684 7.1/en/os/SRPMS/tcpdump-3.6.2-11.7.1.0.src.rpm a677cec9114214c2ea5e5b17e709883d 7.1/en/os/alpha/arpwatch-2.1a11-11.7.1.0.alpha.rpm f7b8cf962abe27d65d628dae5cb992bd 7.1/en/os/alpha/libpcap-0.6.2-11.7.1.0.alpha.rpm 755e2fa9fb0530735e03388f702cfd38 7.1/en/os/alpha/tcpdump-3.6.2-11.7.1.0.alpha.rpm edc6718ed479661f40c929da92b4e24b 7.1/en/os/i386/arpwatch-2.1a11-11.7.1.0.i386.rpm 4e1a186b4287de4183a7fca4d868906e 7.1/en/os/i386/libpcap-0.6.2-11.7.1.0.i386.rpm 2eb63c329def52d1bcdd88f8b3d01841 7.1/en/os/i386/tcpdump-3.6.2-11.7.1.0.i386.rpm 17319e98b00c707f8c924766f0395aad 7.1/en/os/ia64/arpwatch-2.1a11-11.7.1.0.ia64.rpm 8a214b04f325451eecaf08574ebacc7a 7.1/en/os/ia64/libpcap-0.6.2-11.7.1.0.ia64.rpm 90db41ce76a94d2d10369437704bb934 7.1/en/os/ia64/tcpdump-3.6.2-11.7.1.0.ia64.rpm 1cfcf4efdad9c8d44f9c70a9da8da690 7.2/en/os/SRPMS/tcpdump-3.6.2-11.7.2.0.src.rpm 82f93afd069a3b85ddf5a44daeff589f 7.2/en/os/i386/arpwatch-2.1a11-11.7.2.0.i386.rpm f26ebb5d1cbb91d4b5effd9174f1728d 7.2/en/os/i386/libpcap-0.6.2-11.7.2.0.i386.rpm cc168b456fbde106ad1879fe7346c1ee 7.2/en/os/i386/tcpdump-3.6.2-11.7.2.0.i386.rpm 74863a3b3110d2dbb03a03c1ad213152 7.2/en/os/ia64/arpwatch-2.1a11-11.7.2.0.ia64.rpm 876adc0c4d794e75a48e5c6b87fbca45 7.2/en/os/ia64/libpcap-0.6.2-11.7.2.0.ia64.rpm f7543f13b1734c779cafd600566569b2 7.2/en/os/ia64/tcpdump-3.6.2-11.7.2.0.ia64.rpm These packages are GPG signed by Red Hat, Inc. for security. Our key is available at: http://www.redhat.com/about/contact/pgpkey.html You can verify each package with the following command: rpm --checksig <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: rpm --checksig --nogpg <filename> 8. References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0380 Copyright(c) 2000, 2001, 2002 Red Hat, Inc. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. 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Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/Information/advisories.html If you believe that your system has been compromised, contact AusCERT or your representative in FIRST (Forum of Incident Response and Security Teams). Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key iQCVAwUBPaLJ6yh9+71yA2DNAQFNAQQAhzfCq1NjktwD5wdJVNPJn29U2bLkMp+x UhuWnHJHVAWkNm+ti9YI6l4FpN+ZeIJ+WDZ4RilPrPrUMxw6EG9C7qA2G22x6Y2M tLFxOO6H3Kfj0Uqs1WZYn1wuROfaLov9hNuf4HKq58aM/GWtSg7BXiFnqbd3UNPX dqFCvnfk67c= =VVm8 -----END PGP SIGNATURE-----