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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2000.329 -- RHSA-2000:100-02 Setuid bits are removed on dump to prevent exploit 3 November 2000 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: dump Vendor: Red Hat Operating System: Red Hat Linux 5.X, 6.X Impact: Root Compromise Access Required: Local - --------------------------BEGIN INCLUDED TEXT-------------------- - --------------------------------------------------------------------- Red Hat, Inc. Security Advisory Synopsis: Setuid bits are removed on dump to prevent exploit Advisory ID: RHSA-2000:100-02 Issue date: 2000-11-01 Updated on: 2000-11-02 Product: Red Hat Linux Keywords: setuid dump root exploit Cross references: N/A - --------------------------------------------------------------------- 1. Topic: The Red Hat 7.0 dump is being released for Red Hat 6.x and Red Hat 5.x in order to remove root setuid bits to prevent a known dump exploit (#20111). The new dump packages also include a fix for a buffer overflow (#9899) 2. Relevant releases/architectures: Red Hat Linux 5.2 - i386, alpha, sparc Red Hat Linux 6.2 - i386, alpha, sparc Red Hat Linux 6.2EE - i386, alpha, sparc 3. Problem description: Dump can be used to gain root access. 4. Solution: For each RPM for your particular architecture, run: rpm -Fvh [filename] where filename is the name of the RPM. 5. Bug IDs fixed (http://bugzilla.redhat.com/bugzilla for more info): 9899 - Linux dump buffer overflow 20111 - RH6.2 dump SUID exploit (via RSH env. var) 6. RPMs required: Red Hat Linux 5.2: alpha: ftp://updates.redhat.com/5.2/alpha/dump-0.4b19-5.5x.alpha.rpm ftp://updates.redhat.com/5.2/alpha/dump-static-0.4b19-5.5x.alpha.rpm ftp://updates.redhat.com/5.2/alpha/rmt-0.4b19-5.5x.alpha.rpm sparc: ftp://updates.redhat.com/5.2/sparc/dump-0.4b19-5.5x.sparc.rpm ftp://updates.redhat.com/5.2/sparc/dump-static-0.4b19-5.5x.sparc.rpm ftp://updates.redhat.com/5.2/sparc/rmt-0.4b19-5.5x.sparc.rpm i386: ftp://updates.redhat.com/5.2/i386/dump-0.4b19-5.5x.i386.rpm ftp://updates.redhat.com/5.2/i386/dump-static-0.4b19-5.5x.i386.rpm ftp://updates.redhat.com/5.2/i386/rmt-0.4b19-5.5x.i386.rpm sources: ftp://updates.redhat.com/5.2/SRPMS/dump-0.4b19-5.5x.src.rpm Red Hat Linux 6.2: alpha: ftp://updates.redhat.com/6.2/alpha/dump-0.4b19-5.6x.alpha.rpm ftp://updates.redhat.com/6.2/alpha/dump-static-0.4b19-5.6x.alpha.rpm ftp://updates.redhat.com/6.2/alpha/rmt-0.4b19-5.6x.alpha.rpm sparc: ftp://updates.redhat.com/6.2/sparc/dump-0.4b19-5.6x.sparc.rpm ftp://updates.redhat.com/6.2/sparc/dump-static-0.4b19-5.6x.sparc.rpm ftp://updates.redhat.com/6.2/sparc/rmt-0.4b19-5.6x.sparc.rpm i386: ftp://updates.redhat.com/6.2/i386/dump-0.4b19-5.6x.i386.rpm ftp://updates.redhat.com/6.2/i386/dump-static-0.4b19-5.6x.i386.rpm ftp://updates.redhat.com/6.2/i386/rmt-0.4b19-5.6x.i386.rpm sources: ftp://updates.redhat.com/6.2/SRPMS/dump-0.4b19-5.6x.src.rpm 7. Verification: MD5 sum Package Name - -------------------------------------------------------------------------- 710a477813de5924b5aaca8ded33c3b2 5.2/SRPMS/dump-0.4b19-5.5x.src.rpm 496fcf5455218b085ee987c5148cb218 5.2/alpha/dump-0.4b19-5.5x.alpha.rpm c8bec9ba7d4e8eb4bed2de555c6261a8 5.2/alpha/dump-static-0.4b19-5.5x.alpha.rpm 17b1956371260c4c7c86aa7e7098b70a 5.2/alpha/rmt-0.4b19-5.5x.alpha.rpm 3d7179c1541163652d42a0f3eba402c2 5.2/i386/dump-0.4b19-5.5x.i386.rpm 6ab9db49bf706b7228d952d7dffafd6a 5.2/i386/dump-static-0.4b19-5.5x.i386.rpm 3ca02060c0d8c5b2bfab68c9154ca65e 5.2/i386/rmt-0.4b19-5.5x.i386.rpm 80d7226a19922ddbb921c7cc619d68df 5.2/sparc/dump-0.4b19-5.5x.sparc.rpm aedd02e6ebfc7703713ec34930b5cfd5 5.2/sparc/dump-static-0.4b19-5.5x.sparc.rpm aaeaf1e04013e62e311f5fb7ccf4b6df 5.2/sparc/rmt-0.4b19-5.5x.sparc.rpm 48225b01757f79eecd50e20cc3746017 6.2/SRPMS/dump-0.4b19-5.6x.src.rpm 339d7bdc63a154a08ac05b2d59be299f 6.2/alpha/dump-0.4b19-5.6x.alpha.rpm aa4eb8d7e446cdbaf10cec1d6beb2ea8 6.2/alpha/dump-static-0.4b19-5.6x.alpha.rpm d70e961e5ce712df4b671fe7fa53cf0f 6.2/alpha/rmt-0.4b19-5.6x.alpha.rpm 62d35595f6b11c7a478d2f3608ebb8b3 6.2/i386/dump-0.4b19-5.6x.i386.rpm 86a7cd33b8c870f01a4fe3fc500a6af1 6.2/i386/dump-static-0.4b19-5.6x.i386.rpm 6f1831d60345791448f94f7e8276a47e 6.2/i386/rmt-0.4b19-5.6x.i386.rpm f907fe91725a340c07f44d381eb4da70 6.2/sparc/dump-0.4b19-5.6x.sparc.rpm daaf188d21fdfe8141f4e0dcfc8fa51e 6.2/sparc/dump-static-0.4b19-5.6x.sparc.rpm 930c7a447f5c197a73e619789a8ae18a 6.2/sparc/rmt-0.4b19-5.6x.sparc.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: N/A Copyright(c) 2000 Red Hat, Inc. - --------------------------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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