Red Hat Linux General Security Advisory

Red Hat, Inc. Security Advisory Synopsis Updated bash (1.x) packages for Red Hat Linux 5.x, 6.x available Advisory ID RHSA-2000:117-01 Issue Date 2000-11-27 Updated On 2000-11-27 Product Red Hat Linux Keywords bash bash1 security exploit << denial of service Cross References N/A 1. Topic: Updated bash (1.x) packages for Red Hat Linux 5.x and 6.x, fixing a security problem, are available. 2. Problem description: The << operator in bash 1.x used predictable filenames, leading to a potential denial of service attack. A local user account is required to exploit the security leak. 3. Bug IDs fixed: (see bugzilla for more information) 21292 - bash creates insecure tmp files 4. 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 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/bash-1.14.7-23.5x.alpha.rpm sparc: ftp://updates.redhat.com/5.2/en/os/sparc/bash-1.14.7-23.5x.sparc.rpm i386: ftp://updates.redhat.com/5.2/en/os/i386/bash-1.14.7-23.5x.i386.rpm sources: ftp://updates.redhat.com/5.2/en/os/SRPMS/bash-1.14.7-23.5x.src.rpm Red Hat Linux 6.2: alpha: ftp://updates.redhat.com/6.2/en/os/alpha/bash-1.14.7-23.6x.alpha.rpm sparc: ftp://updates.redhat.com/6.2/en/os/sparc/bash-1.14.7-23.6x.sparc.rpm i386: ftp://updates.redhat.com/6.2/en/os/i386/bash-1.14.7-23.6x.i386.rpm sources: ftp://updates.redhat.com/6.2/en/os/SRPMS/bash-1.14.7-23.6x.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 ------------------------------------------------------------------------- e2eba8b1e7a15821046febdff1961508 5.2/en/os/SRPMS/bash-1.14.7-23.5x.src.rpm 002c01664380a1f084caf320dd058f3a 5.2/en/os/alpha/bash-1.14.7-23.5x.alpha.rpm da6d41c36fcb4b28f9a4731c6785cb8d 5.2/en/os/i386/bash-1.14.7-23.5x.i386.rpm f28847e9beae06113e58455a5133a1ca 5.2/en/os/sparc/bash-1.14.7-23.5x.sparc.rpm 23b421bbc697b9c57a7d413ece9e4df2 6.2/en/os/SRPMS/bash-1.14.7-23.6x.src.rpm 19ed96c0935ef630215736d242911c98 6.2/en/os/alpha/bash-1.14.7-23.6x.alpha.rpm 9fe492b13c08e7993a918d0395fda486 6.2/en/os/i386/bash-1.14.7-23.6x.i386.rpm 1a92e61a4d5c7989b26d687dfe881a5c 6.2/en/os/sparc/bash-1.14.7-23.6x.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