Red Hat Linux General Security Advisory

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. Problem description: Dump can be used to gain root access. 3. Bug IDs fixed: (see bugzilla for more information) 9899 - Linux dump buffer overflow 20111 - RH6.2 dump SUID exploit (via RSH env. var) 4. 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 5. RPMs required: Red Hat Linux 5.2: alpha: ftp://updates.redhat.com/5.2/en/os/alpha/dump-0.4b19-5.5x.alpha.rpm ftp://updates.redhat.com/5.2/en/os/alpha/dump-static-0.4b19-5.5x.alpha.rpm ftp://updates.redhat.com/5.2/en/os/alpha/rmt-0.4b19-5.5x.alpha.rpm sparc: ftp://updates.redhat.com/5.2/en/os/sparc/dump-0.4b19-5.5x.sparc.rpm ftp://updates.redhat.com/5.2/en/os/sparc/dump-static-0.4b19-5.5x.sparc.rpm ftp://updates.redhat.com/5.2/en/os/sparc/rmt-0.4b19-5.5x.sparc.rpm i386: ftp://updates.redhat.com/5.2/en/os/i386/dump-0.4b19-5.5x.i386.rpm ftp://updates.redhat.com/5.2/en/os/i386/dump-static-0.4b19-5.5x.i386.rpm ftp://updates.redhat.com/5.2/en/os/i386/rmt-0.4b19-5.5x.i386.rpm sources: ftp://updates.redhat.com/5.2/en/os/SRPMS/dump-0.4b19-5.5x.src.rpm Red Hat Linux 6.2: alpha: ftp://updates.redhat.com/6.2/en/os/alpha/dump-0.4b19-5.6x.alpha.rpm ftp://updates.redhat.com/6.2/en/os/alpha/dump-static-0.4b19-5.6x.alpha.rpm ftp://updates.redhat.com/6.2/en/os/alpha/rmt-0.4b19-5.6x.alpha.rpm sparc: ftp://updates.redhat.com/6.2/en/os/sparc/dump-0.4b19-5.6x.sparc.rpm ftp://updates.redhat.com/6.2/en/os/sparc/dump-static-0.4b19-5.6x.sparc.rpm ftp://updates.redhat.com/6.2/en/os/sparc/rmt-0.4b19-5.6x.sparc.rpm i386: ftp://updates.redhat.com/6.2/en/os/i386/dump-0.4b19-5.6x.i386.rpm ftp://updates.redhat.com/6.2/en/os/i386/dump-static-0.4b19-5.6x.i386.rpm ftp://updates.redhat.com/6.2/en/os/i386/rmt-0.4b19-5.6x.i386.rpm sources: ftp://updates.redhat.com/6.2/en/os/SRPMS/dump-0.4b19-5.6x.src.rpm 6. Solution: For each RPM for your particular architecture, run: rpm -Fvh [filename] where filename is the name of the RPM. 7. Verification: MD5 sum Package Name ------------------------------------------------------------------------- 710a477813de5924b5aaca8ded33c3b2 5.2/en/os/SRPMS/dump-0.4b19-5.5x.src.rpm 496fcf5455218b085ee987c5148cb218 5.2/en/os/alpha/dump-0.4b19-5.5x.alpha.rpm c8bec9ba7d4e8eb4bed2de555c6261a8 5.2/en/os/alpha/dump-static-0.4b19-5.5x.alpha.rpm 17b1956371260c4c7c86aa7e7098b70a 5.2/en/os/alpha/rmt-0.4b19-5.5x.alpha.rpm 3d7179c1541163652d42a0f3eba402c2 5.2/en/os/i386/dump-0.4b19-5.5x.i386.rpm 6ab9db49bf706b7228d952d7dffafd6a 5.2/en/os/i386/dump-static-0.4b19-5.5x.i386.rpm 3ca02060c0d8c5b2bfab68c9154ca65e 5.2/en/os/i386/rmt-0.4b19-5.5x.i386.rpm 80d7226a19922ddbb921c7cc619d68df 5.2/en/os/sparc/dump-0.4b19-5.5x.sparc.rpm aedd02e6ebfc7703713ec34930b5cfd5 5.2/en/os/sparc/dump-static-0.4b19-5.5x.sparc.rpm aaeaf1e04013e62e311f5fb7ccf4b6df 5.2/en/os/sparc/rmt-0.4b19-5.5x.sparc.rpm 48225b01757f79eecd50e20cc3746017 6.2/en/os/SRPMS/dump-0.4b19-5.6x.src.rpm 339d7bdc63a154a08ac05b2d59be299f 6.2/en/os/alpha/dump-0.4b19-5.6x.alpha.rpm aa4eb8d7e446cdbaf10cec1d6beb2ea8 6.2/en/os/alpha/dump-static-0.4b19-5.6x.alpha.rpm d70e961e5ce712df4b671fe7fa53cf0f 6.2/en/os/alpha/rmt-0.4b19-5.6x.alpha.rpm 62d35595f6b11c7a478d2f3608ebb8b3 6.2/en/os/i386/dump-0.4b19-5.6x.i386.rpm 86a7cd33b8c870f01a4fe3fc500a6af1 6.2/en/os/i386/dump-static-0.4b19-5.6x.i386.rpm 6f1831d60345791448f94f7e8276a47e 6.2/en/os/i386/rmt-0.4b19-5.6x.i386.rpm f907fe91725a340c07f44d381eb4da70 6.2/en/os/sparc/dump-0.4b19-5.6x.sparc.rpm daaf188d21fdfe8141f4e0dcfc8fa51e 6.2/en/os/sparc/dump-static-0.4b19-5.6x.sparc.rpm 930c7a447f5c197a73e619789a8ae18a 6.2/en/os/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/about/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 Note that you need RPM >= 3.0 to check GnuPG keys. 8. References: N/A