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Red Hat: RHSA-2000:078-02 Moderate: Traceroute Root Exploit Fix

A root exploit and several additional bugs in traceroute have beencorrected.. ` --------------------------------------------------------------------- Red Hat, Inc. Security Advisory Synopsis: traceroute setuid root exploit with multiple -g options Advisory ID: RHSA-2000:078-02 Issue date: 2000-10-06 Updated on: 2000-10-06 Product: Red Hat Linux Keywords: traceroute setuid root exploit Cross references: N/A --------------------------------------------------------------------- 1. Topic: a root exploit and several additional bugs in traceroute have been corrected. 2. Relevant releases/architectures: Red Hat Linux 5.0 - i386, alpha, sparc Red Hat Linux 5.1 - i386, alpha, sparc Red Hat Linux 5.2 - i386, alpha, sparc Red Hat Linux 6.0 - i386, alpha, sparc Red Hat Linux 6.1 - i386, alpha, sparc Red Hat Linux 6.2 - i386, alpha, sparc 3. Problem description: A root exploit due to a segfault when using multiple -g options is fixed for Red Hat Linux 6.x and Red Hat Linux 5.x. A potential denial-of-service attack is alleviated by enforcing a maximum buffer size of 64Kb. On Red Hat Linux 6.x, loose source routing (LSRR) now works correctly. 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 ( for more info): 18466 - traceroute: local root exploit now exists 13466 - segfault while parsing multiple -g arguments 15917 - Maksimum packetlength checked badly (Local DoS) 16281 - traceroute LSRR broken 6. RPMs required: Red Hat Linux 5.x: alpha: sparc: i386: sources: Red Hat Linux 6.x: alpha: sparc: i386: sources: 7. Verification: MD5 sum Package Name -------------------------------------------------------------------------- 1fe1fb918271526d5d4e22046f1da776 5.2/SRPMS/traceroute-1.4a5-24.5x.src.rpm 25a92211082e65df9f89fd71ac7a6888 5.2/alpha/traceroute-1.4a5-24.5x.alpha.rpm 2fc1c66152f3fbd723b695472aadc0a6 5.2/i386/traceroute-1.4a5-24.5x.i386.rpm d60c337c3fa3d23ba2c1cde082c8fee5 5.2/sparc/traceroute-1.4a5-24.5x.sparc.rpm 9fc2151d7cca01185add0ed085efcde0 6.2/SRPMS/traceroute-1.4a5-24.6x.src.rpm f279d9e415a7d806daae86e8112fe8c6 6.2/alpha/traceroute-1.4a5-24.6x.alpha.rpm 49bd824f9f4784ce9c45fa54285c7aa0 6.2/i386/traceroute-1.4a5-24.6x.i386.rpm 498a1e08221e1d9e0115edb7f34ecef9 6.2/sparc/traceroute-1.4a5-24.6x.sparc.rpm These packages are GPG signed by Red Hat, Inc. for security. Our key is available at: You can verify each package with the following command: rpm --checksig 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 8. References: Thanks to Pekka Savola for discovering the flaw. See for a complete summary of the flaw. Copyright(c) 2000 Red Hat, Inc. `. Red Hat has issued an alert on a significant security vulnerability in the traceroute utility due to multiple -g flags, posing a denial-of-service risk. A fix is available.. traceroute exploit, Red Hat Linux fix, security advisory, DOS mitigation, setuid exploit. . LinuxSecurity.com Team

Oct 06, 2000 Red Hat