Red Hat Linux General Security Advisory

Red Hat, Inc. Security Advisory Synopsis Potential security problems in ping fixed. Advisory ID RHSA-2000:087-02 Issue Date 2000-10-17 Updated On 2000-10-18 Product Red Hat Linux Keywords ping buffer overflows Cross References N/A 1. Topic: N/A 2. Problem description: Several problems in ping are fixed: 1) Root privileges are dropped after acquiring a raw socket. 2) An 8 byte overflow of a static buffer "outpack" is prevented. 3) An overflow of a static buffer "buf" is prevented. A non-exploitable root only segfault is fixed as well. 3. Bug IDs fixed: (see bugzilla for more information) 18611 - Unfortunate regression in "ping" security 16677 - "ping -c 1 -s 65690 localhost" segfaults 4. Relevant releases/architectures: Red Hat Linux 6.2 - i386, alpha, sparc Red Hat Linux 7.0 - i386 Red Hat Linux 7.0J - i386 5. RPMs required: Red Hat Linux 6.2: alpha: ftp://updates.redhat.com/6.2/en/os/alpha/iputils-20001010-1.6x.alpha.rpm sparc: ftp://updates.redhat.com/6.2/en/os/sparc/iputils-20001010-1.6x.sparc.rpm i386: ftp://updates.redhat.com/6.2/en/os/i386/iputils-20001010-1.6x.i386.rpm sources: ftp://updates.redhat.com/6.2/en/os/SRPMS/iputils-20001010-1.6x.src.rpm Red Hat Linux 7.0: i386: ftp://updates.redhat.com/7.0/en/os/i386/iputils-20001010-1.i386.rpm sources: ftp://updates.redhat.com/7.0/en/os/SRPMS/iputils-20001010-1.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 ------------------------------------------------------------------------- e4b1ca9fbebe4dfa6e37eba5a48d307f 6.2/en/os/SRPMS/iputils-20001010-1.6x.src.rpm 6904ba7f8502fb009002cd96645f0539 6.2/en/os/alpha/iputils-20001010-1.6x.alpha.rpm ce5de156e02e5e8e010a344e8c0cdc34 6.2/en/os/i386/iputils-20001010-1.6x.i386.rpm 11c046097bfb8c3fa62635aa531edfeb 6.2/en/os/sparc/iputils-20001010-1.6x.sparc.rpm 7bb083f0624eafd1a3f2038ff740789a 7.0/en/os/SRPMS/iputils-20001010-1.src.rpm 1973d87e9f0b685991ab4ffba1a7d257 7.0/en/os/i386/iputils-20001010-1.i386.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