From bugzilla@redhat.com Wed Nov 28 15:07:12 2001 From: bugzilla@redhat.com To: redhat-watch-list@redhat.com Cc: bugtraq@securityfocus.com, linux-security@redhat.com Date: Wed, 28 Nov 2001 05:14 -0500 Subject: [RHSA-2001:156-05] Updated postfix packages are available [The following text is in the "iso-8859-1" character set] [Your display is set for the "US-ASCII" character set] [Some characters may be displayed incorrectly] --------------------------------------------------------------------- Red Hat, Inc. Red Hat Security Advisory Synopsis: Updated postfix packages are available Advisory ID: RHSA-2001:156-05 Issue date: 2001-11-15 Updated on: 2001-11-27 Product: Red Hat Powertools Keywords: postfix session log memory exhaustion denial of service Cross references: Obsoletes: --------------------------------------------------------------------- 1. Topic: Updated postfix packages are now availble that will fix a possible denial of service attack. 2. Relevant releases/architectures: Red Hat Powertools 7.1 - alpha, i386 3. Problem description: A malicious user could get postfix to exhaust a machine's memory by abusing its session cache which could result in a denial of service attack. The updated postfix packages will fix these potential problems. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. To update all RPMs for your particular architecture, run: rpm -Fvh [filenames] where [filenames] is a list of the RPMs you wish to upgrade. Only those RPMs which are currently installed will be updated. Those RPMs which are not installed but included in the list will not be updated. Note that you can also use wildcards (*.rpm) if your current directory *only* contains the desired RPMs. Please note that this update is also available via Red Hat Network. Many people find this an easier way to apply updates. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date This will start an interactive process that will result in the appropriate RPMs being upgraded on your system. 5. Bug IDs fixed (http://bugzilla.redhat.com/bugzilla for more info): 6. RPMs required: Red Hat Powertools 7.1: SRPMS: ftp://updates.redhat.com/7.1/en/powertools/SRPMS/postfix-20011125-1SASL.src.rpm alpha: ftp://updates.redhat.com/7.1/en/powertools/alpha/postfix-20011125-1SASL.alpha.rpm i386: ftp://updates.redhat.com/7.1/en/powertools/i386/postfix-20011125-1SASL.i386.rpm 7. Verification: MD5 sum Package Name -------------------------------------------------------------------------- 3f226c17cd8a8955826c3aced3f77947 7.1/en/powertools/SRPMS/postfix-20011125-1SASL.src.rpm ba0706ce0d6e6c453a8e1afcab248eac 7.1/en/powertools/alpha/postfix-20011125-1SASL.alpha.rpm 60402b08bd489052146eec437838a829 7.1/en/powertools/i386/postfix-20011125-1SASL.i386.rpm These packages are GPG signed by Red Hat, Inc. for security. Our key is available at: http://www.redhat.com/about/contact/pgpkey.html 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: Copyright(c) 2000, 2001 Red Hat, Inc.