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Red Hat Powertools: RHSA-2001:176-05 Critical: Exim Remote Execution

Updated exim packages are available, which fix a problem when handling certain types of addresses with some configurations. The default configuration does not exhibit this problem.. ` --------------------------------------------------------------------- Red Hat, Inc. Red Hat Security Advisory Synopsis: Updated exim packages fix security problem Advisory ID: RHSA-2001:176-05 Issue date: 2001-12-19 Updated on: 2002-01-07 Product: Red Hat Powertools Keywords: exim pipe remote Cross references: Obsoletes: --------------------------------------------------------------------- 1. Topic: Updated exim packages are available, which fix a problem when handling certain types of addresses with some configurations. The default configuration does not exhibit this problem. 2. Relevant releases/architectures: Red Hat Powertools 6.2 - alpha, i386, sparc Red Hat Powertools 7.0 - alpha, i386 Red Hat Powertools 7.1 - alpha, i386 3. Problem description: When the local exim configuration directs or routes an address to a pipe transport without verifying that the local part is valid, the command encoded in the local part will be executed. This problem does not apply to pipes run from alias or forward files since the local part is verified in that case. However if, for example, all incoming mail is filtered in some way (perhaps with a virus checker) without verifying that the local part is valid then your site may be affected by this problem. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2001-0889 to this issue. It is recommended that all exim users upgrade to provided packages. 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 currentlyinstalled 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 ( for more info): 6. RPMs required: Red Hat Powertools 6.2: SRPMS: alpha: i386: sparc: Red Hat Powertools 7.0: SRPMS: alpha: i386: Red Hat Powertools 7.1: SRPMS: alpha: i386: 7. Verification: MD5 sum Package Name -------------------------------------------------------------------------- bf556e815324fbda9dae66fce2829062 6.2/en/powertools/SRPMS/exim-3.22-6x.1.src.rpm fba79374816674aea14a7e04771eac09 6.2/en/powertools/alpha/exim-3.22-6x.1.alpha.rpm 9416c5849b4926fe730e492336a67381 6.2/en/powertools/alpha/exim-doc-3.22-6x.1.alpha.rpm 05a44b64be74033bae871941becd2bf4 6.2/en/powertools/alpha/exim-mon-3.22-6x.1.alpha.rpm beb994172296da655ef91c9261ed941f 6.2/en/powertools/i386/exim-3.22-6x.1.i386.rpm 1a19f29d50a80e03340ae2463b2eae63 6.2/en/powertools/i386/exim-doc-3.22-6x.1.i386.rpm 219bb72a76a7665d17b6c91ff6faa1f6 6.2/en/powertools/i386/exim-mon-3.22-6x.1.i386.rpm ab286dea084cc3e75f82f18c3dc7f762 6.2/en/powertools/sparc/exim-3.22-6x.1.sparc.rpm 6123b55dcf2c56067476c2373f4df36d 6.2/en/powertools/sparc/exim-doc-3.22-6x.1.sparc.rpm 99269be1db82543f8a3f3212f670e93d 6.2/en/powertools/sparc/exim-mon-3.22-6x.1.sparc.rpm 99bfa12ca904d072a465ce5583fc3e9d 7.0/en/powertools/SRPMS/exim-3.22-13.7x.1.src.rpm e2c9415e9f410dee3b08f2b3c56b07f6 7.0/en/powertools/alpha/exim-3.22-13.7x.1.alpha.rpm 88a5f4214e20a5308772cdc67e3c3a3f7.0/en/powertools/alpha/exim-doc-3.22-13.7x.1.alpha.rpm cdd3b62f9462bacfa4cc6f9f7b85807e 7.0/en/powertools/alpha/exim-mon-3.22-13.7x.1.alpha.rpm b24e7bd044caacc8fa6d433ec5581e88 7.0/en/powertools/i386/exim-3.22-13.7x.1.i386.rpm 8793738846bf29a190c9bde89ffba478 7.0/en/powertools/i386/exim-doc-3.22-13.7x.1.i386.rpm 392bd1754579aade35d17457e5151ace 7.0/en/powertools/i386/exim-mon-3.22-13.7x.1.i386.rpm a86ba48a3ffb43f46108ab8cc8c74d2c 7.1/en/powertools/SRPMS/exim-3.22-14.1.src.rpm b43055b3838eca79c4e503afcf581884 7.1/en/powertools/alpha/exim-3.22-14.1.alpha.rpm 2303c2d0111c556640ad90b23fd01454 7.1/en/powertools/alpha/exim-doc-3.22-14.1.alpha.rpm 64b48832816f7560d29e09a4e324f0ad 7.1/en/powertools/alpha/exim-mon-3.22-14.1.alpha.rpm 7298cff2ab92fc5d88257d683bc40ee2 7.1/en/powertools/i386/exim-3.22-14.1.i386.rpm a838d11f43fd9fc68c34a92ba17e276e 7.1/en/powertools/i386/exim-doc-3.22-14.1.i386.rpm f076bee91ecdc877024a5f2ad2fe5c57 7.1/en/powertools/i386/exim-mon-3.22-14.1.i386.rpm These packages are GPG signed by Red Hat, Inc. for security. Our key is available at: About 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: CVE -CVE-2001-0889 http://marc.theaimsgroup.com/?l=exim-announce&m=100877325121223 Copyright(c) 2000, 2001, 2002 Red Hat, Inc. `. Critical Exim update addresses execution flaw. Immediate upgrade recommended for Red Hat Powertools users.. exim security advisory, Red Hat update, uncontrolled execution, remote execution risk. . LinuxSecurity.com Team

Jan 08, 2002 Red Hat