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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2000.214 -- RHSA-2000:053-01 Updated usermode packages 14 August 2000 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: usermode Vendor: Red Hat Operating System: Red Hat Linux Linux Platform: N/A Impact: Root Compromise Access Required: Local - --------------------------BEGIN INCLUDED TEXT-------------------- - --------------------------------------------------------------------- Red Hat, Inc. Security Advisory Synopsis: Updated usermode packages. Advisory ID: RHSA-2000:053-01 Issue date: 2000-08-11 Updated on: 2000-08-11 Product: Red Hat Linux Keywords: usermode shutdown Cross references: N/A - --------------------------------------------------------------------- 1. Topic: Updated usermode packages are now available for Red Hat Linux 6.0, 6.1, and 6.2. 2. Relevant releases/architectures: 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 6.2E - i386, alpha, sparc 3. Problem description: The usermode package allows unprivileged users logged in at the system console to run the halt, poweroff, reboot, and shutdown commands without needing to know the superuser's password. While being able to halt, poweroff, and reboot is a desirable thing, an unprivileged user can also bring the system to single-user mode by running "shutdown now" with no additional flags. This update removes the "shutdown" command from the list of commands unprivileged users can run. 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 (http://bugzilla.redhat.com/bugzilla for more info): 13768 - Auth dialogs show "Picture of a key" text instead of graphic 13616 - Missing icon. 12433 - /usr/sbin/userhelper not stripped 11006 - kppp either doesn't display locally or remotely 9746 - Local user can go into single mode only with shutdown now... 6. RPMs required: Red Hat Linux 6.0, 6.1, 6.2: sparc: ftp://updates.redhat.com/6.2/sparc/usermode-1.28-2.sparc.rpm alpha: ftp://updates.redhat.com/6.2/alpha/usermode-1.28-2.alpha.rpm i386: ftp://updates.redhat.com/6.2/i386/usermode-1.28-2.i386.rpm sources: ftp://updates.redhat.com/6.2/SRPMS/usermode-1.28-2.src.rpm 7. Verification: MD5 sum Package Name - -------------------------------------------------------------------------- 24f2766589d1a16ebcda912067173396 6.2/SRPMS/usermode-1.28-2.src.rpm 94423f4138477d9d47a055ed3c4b3648 6.2/alpha/usermode-1.28-2.alpha.rpm b8f16bb02c4355a86183e268bd57ac74 6.2/i386/usermode-1.28-2.i386.rpm e1c2b7626a905f64b03f48127e742259 6.2/sparc/usermode-1.28-2.sparc.rpm These packages are GPG signed by Red Hat, Inc. for security. Our key is available at: http://www.redhat.com/corp/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> 8. References: N/A Copyright(c) 2000 Red Hat, Inc. - --------------------------END INCLUDED TEXT-------------------- This security bulletin is provided as a service to AusCERT's members. 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Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/Information/advisories.html If you believe that your system has been compromised, contact AusCERT or your representative in FIRST (Forum of Incident Response and Security Teams). Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for emergencies. -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key iQCVAwUBOZkgVih9+71yA2DNAQGdTAP+LR3yEU++kD2A5s85NtgnFXp/NbPoNaOc Q+XeHbOZJeACub7kjlQ364pv+QGbVMoy6RHOnSEkDf6QmfuTPABM+gCnU+oMYnNV LddcI7GKG0Nt8uggtNa89qNpqumHGP+QTu5szDhifH+FcVBAn7g62K9E3cBaWGqe Feymn4Lknjg= =Kjzn -----END PGP SIGNATURE-----