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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2001.117 -- RHSA-2001:028-02 buffer overflow in slrn 16 March 2001 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: slrn Vendor: Red Hat Operating System: Red Hat Linux Linux Platform: Alpha i386 Sparc Impact: Execute Arbitrary Code/Commands Access Required: Remote - --------------------------BEGIN INCLUDED TEXT-------------------- - --------------------------------------------------------------------- Red Hat, Inc. Red Hat Security Advisory Synopsis: buffer overflow in slrn Advisory ID: RHSA-2001:028-02 Issue date: 2001-03-09 Updated on: 2001-03-13 Product: Red Hat Linux Keywords: slrn wrap overflow Cross references: Obsoletes: - --------------------------------------------------------------------- 1. Topic: An overflow exists in the slrn pacakge as shipped in Red Hat Linux 7 and Red Hat Linux 6.x, which could possibly lead to remote users executing arbitrary code as the user running slrn. It is recommended that all users of slrn update to the fixed packages. Users of Red Hat Linux 6.0 or 6.1 should use the packages for Red Hat Linux 6.2. 2. Relevant releases/architectures: Red Hat Linux 6.2 - alpha, i386, sparc Red Hat Linux 7.0 - alpha, i386 3. Problem description: An overflow exists in the article wrapping code for slrn. By posting a carefully constructed article, it would be theoretically possible for a remote user to execute arbitrary code as the user running slrn. No know *exploits* of this overflow have been reported, but articles that will cause slrn to crash do exist. 4. Solution: 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 directly *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): 6. RPMs required: Red Hat Linux 6.2: SRPMS: ftp://updates.redhat.com/6.2/SRPMS/slrn-0.9.6.4-0.6.src.rpm alpha: ftp://updates.redhat.com/6.2/alpha/slrn-0.9.6.4-0.6.alpha.rpm ftp://updates.redhat.com/6.2/alpha/slrn-pull-0.9.6.4-0.6.alpha.rpm i386: ftp://updates.redhat.com/6.2/i386/slrn-0.9.6.4-0.6.i386.rpm ftp://updates.redhat.com/6.2/i386/slrn-pull-0.9.6.4-0.6.i386.rpm sparc: ftp://updates.redhat.com/6.2/sparc/slrn-0.9.6.4-0.6.sparc.rpm ftp://updates.redhat.com/6.2/sparc/slrn-pull-0.9.6.4-0.6.sparc.rpm Red Hat Linux 7.0: SRPMS: ftp://updates.redhat.com/7.0/SRPMS/slrn-0.9.6.4-0.7.src.rpm alpha: ftp://updates.redhat.com/7.0/alpha/slrn-0.9.6.4-0.7.alpha.rpm ftp://updates.redhat.com/7.0/alpha/slrn-pull-0.9.6.4-0.7.alpha.rpm i386: ftp://updates.redhat.com/7.0/i386/slrn-0.9.6.4-0.7.i386.rpm ftp://updates.redhat.com/7.0/i386/slrn-pull-0.9.6.4-0.7.i386.rpm 7. Verification: MD5 sum Package Name - -------------------------------------------------------------------------- df1d6c939fae603944e709fd27eed71b 6.2/SRPMS/slrn-0.9.6.4-0.6.src.rpm 3854e2cee9e299a551d3f6a45f463f05 6.2/alpha/slrn-0.9.6.4-0.6.alpha.rpm 37dce6b561e524f16f3c54f33564cc27 6.2/alpha/slrn-pull-0.9.6.4-0.6.alpha.rpm 81479f270bf2539b665115dabbb2c3d1 6.2/i386/slrn-0.9.6.4-0.6.i386.rpm e160f67aae0c45e533de818569a64c8d 6.2/i386/slrn-pull-0.9.6.4-0.6.i386.rpm 2d76f003a45504f55afda015f63ad0e2 6.2/sparc/slrn-0.9.6.4-0.6.sparc.rpm 40c5ed228ae52c26a1ca687b7d929177 6.2/sparc/slrn-pull-0.9.6.4-0.6.sparc.rpm 1793d468092db5b40f66b388f5e36a3b 7.0/SRPMS/slrn-0.9.6.4-0.7.src.rpm 01d6a50b5c2817066385d1621c259510 7.0/alpha/slrn-0.9.6.4-0.7.alpha.rpm ba4c76bad2540e37f8fa5f292a2641ae 7.0/alpha/slrn-pull-0.9.6.4-0.7.alpha.rpm dd601a7324b5589326a5d92d3d2ee27f 7.0/i386/slrn-0.9.6.4-0.7.i386.rpm d49c0b47e967bd9abdb7fec655b8e3ff 7.0/i386/slrn-pull-0.9.6.4-0.7.i386.rpm These packages are GPG signed by Red Hat, Inc. for security. Our key is available at: http://www.redhat.com/corp/contact.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: Copyright(c) 2000, 2001 Red Hat, Inc. _______________________________________________ Redhat-watch-list mailing list To unsubscribe, visit: https://listman.redhat.com/mailman/listinfo/redhat-watch-list - --------------------------END INCLUDED TEXT-------------------- This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to use any or all of this information is the responsibility of each user or organisation, and should be done so in accordance with site policies and procedures. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the original authors to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. 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). 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