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Red Hat Powertools RHSA-2000:122-06 Critical: Diskcheck Race Issue

A race vulnerability exists in the diskcheck package.. ` --------------------------------------------------------------------- Red Hat, Inc. Security Advisory Synopsis: race condition exists in diskcheck Advisory ID: RHSA-2000:122-06 Issue date: 2000-12-01 Updated on: 2000-12-08 Product: Red Hat Powertools Keywords: N/A Cross references: N/A --------------------------------------------------------------------- 1. Topic: A race vulnerability exists in the diskcheck package. 2. Relevant releases/architectures: Red Hat Powertools 6.0 - noarch Red Hat Powertools 6.1 - noarch Red Hat Powertools 6.2 - noarch Red Hat Powertools 7.0 - noarch 3. Problem description: A race vulnerability exists where a user can replace the tempfile used by diskcheck with symlinks to other files on the system, making it possible to corrupt those files. This update fixes the vulnerability as well as problems with diskcheck sending mail if /var is on a full partition. All users should upgrade to the version below. NOTE: The version of diskcheck shipped in Powertools 7 does not have the race condition, but should be upgraded to fix the problem with /var being on a full partition. 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): 11724 - tempfile has easily guessed name and follows symlinks 21901 - diskcheck sends empty email if filesystem where tmp file is created fills up 6. RPMs required: Red Hat Powertools 6.2: noarch: sources: Red Hat Powertools 7.0: noarch: sources: 7. Verification: MD5 sum Package Name -------------------------------------------------------------------------- 33ec0067e449f3411982f3280d5b51a7 6.2/SRPMS/diskcheck-3.1.1-12.src.rpm ad5b2b48440b9ce431bd31b9d28bde92 6.2/noarch/diskcheck-3.1.1-12.noarch.rpm b7670bab7d16b9903735728c65c1a971 7.0/SRPMS/diskcheck-3.1.1-12.src.rpm e54d258f082219443106341074cecdbf 7.0/noarch/diskcheck-3.1.1-12.noarch.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: N/A Copyright(c) 2000 Red Hat, Inc. `. Improvements made to concurrency management in diskcheck have been established to maintain system integrity and prevent data loss.. diskcheck race condition, Red Hat security advisory, system integrity fix. . Severity: Critical. LinuxSecurity.com Team

Dec 05, 2000 •Critical Red Hat