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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2005.0350 -- RHSA-2005:261-01 Low: glibc security update 29 April 2005 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: glibc Publisher: Red Hat Operating System: Red Hat Enterprise Linux AS/ES/WS 2.1 Red Hat Linux Advanced Workstation 2.1 Impact: Access Privileged Data Overwrite Arbitrary Files Access: Existing Account CVE Names: CAN-2004-1453 CAN-2004-1382 CAN-2004-0968 Ref: ESB-2004.0802 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2005-261.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - - --------------------------------------------------------------------- Red Hat Security Advisory Synopsis: Low: glibc security update Advisory ID: RHSA-2005:261-01 Advisory URL: https://rhn.redhat.com/errata/RHSA-2005-261.html Issue date: 2005-04-28 Updated on: 2005-04-28 Product: Red Hat Enterprise Linux Keywords: glibc LD_DEBUG catchsegv glibcbug CVE Names: CAN-2004-0968 CAN-2004-1382 CAN-2004-1453 - - --------------------------------------------------------------------- 1. Summary: Updated glibc packages that address several bugs are now available. This update has been rated as having low security impact by the Red Hat Security Response Team. 2. Relevant releases/architectures: Red Hat Enterprise Linux AS (Advanced Server) version 2.1 - i386, ia64 Red Hat Linux Advanced Workstation 2.1 - ia64 Red Hat Enterprise Linux ES version 2.1 - i386 Red Hat Enterprise Linux WS version 2.1 - i386 3. Problem description: The GNU libc packages (known as glibc) contain the standard C libraries used by applications. Flaws in the catchsegv and glibcbug scripts were discovered. A local user could utilize these flaws to overwrite files via a symlink attack on temporary files. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2004-0968 and CAN-2004-1382 to these issues. It was discovered that the use of LD_DEBUG and LD_SHOW_AUXV were not restricted for a setuid program. A local user could utilize this flaw to gain information, such as the list of symbols used by the program. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2004-1453 to this issue. This erratum also addresses the following bugs in the GNU C Library: - - - Now avoids calling sigaction (SIGPIPE, ...) in syslog implementation - - - Fixed poll on Itanium - - - Now allows setenv/putenv in shared library constructors Users of glibc are advised to upgrade to these erratum packages that remove the unecessary glibcbug script and contain backported patches to correct these other issues. 4. Solution: Before applying this update, make sure that all previously-released errata relevant to your system have been applied. Use Red Hat Network to download and update your packages. To launch the Red Hat Update Agent, use the following command: up2date For information on how to install packages manually, refer to the following Web page for the System Administration or Customization guide specific to your system: http://www.redhat.com/docs/manuals/enterprise/ 5. Bug IDs fixed (http://bugzilla.redhat.com/): 140068 - [RHAS2.1] CAN-2004-0968 temporary file vulnerabilities in catchsegv script 140487 - [RHAS2.1] Bad declaration of __syscall_poll can cause bogus values for timeout to be passed to the kernel 148814 - CAN-2004-1453 Information leak with LD_DEBUG 148800 - CAN-2004-1382 insecure temporary file usage 6. RPMs required: Red Hat Enterprise Linux AS (Advanced Server) version 2.1: SRPMS: ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/glibc-2.2.4-32.20.src.rpm 86c397f7614278f57b9b814d6adedace glibc-2.2.4-32.20.src.rpm i386: 5b601e85eba293c52d9fe15d8e766a12 glibc-2.2.4-32.20.i386.rpm e1c21533e3d86da39390e93d4b93060e glibc-2.2.4-32.20.i686.rpm b7eda3e6a3b7f24813415c692bde5cff glibc-common-2.2.4-32.20.i386.rpm 0b39ef1f661609a0346675b1877a6288 glibc-devel-2.2.4-32.20.i386.rpm 88ed7d4adfcf4627478367a253a65989 glibc-profile-2.2.4-32.20.i386.rpm b3d6d4389676fc0652277f490d47dfec nscd-2.2.4-32.20.i386.rpm ia64: 158103afa78aec998e3db120d245cd37 glibc-2.2.4-32.20.ia64.rpm 321c25cf3605db040fef49a79c443618 glibc-common-2.2.4-32.20.ia64.rpm a5eb76dc9b8dbcf8cfd6938d1a957977 glibc-devel-2.2.4-32.20.ia64.rpm b24148c15938f32f7a5f7df0773eb092 glibc-profile-2.2.4-32.20.ia64.rpm 925478d53517e5cd62762f608b4e26f8 nscd-2.2.4-32.20.ia64.rpm Red Hat Linux Advanced Workstation 2.1: SRPMS: ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/glibc-2.2.4-32.20.src.rpm 86c397f7614278f57b9b814d6adedace glibc-2.2.4-32.20.src.rpm ia64: 158103afa78aec998e3db120d245cd37 glibc-2.2.4-32.20.ia64.rpm 321c25cf3605db040fef49a79c443618 glibc-common-2.2.4-32.20.ia64.rpm a5eb76dc9b8dbcf8cfd6938d1a957977 glibc-devel-2.2.4-32.20.ia64.rpm b24148c15938f32f7a5f7df0773eb092 glibc-profile-2.2.4-32.20.ia64.rpm 925478d53517e5cd62762f608b4e26f8 nscd-2.2.4-32.20.ia64.rpm Red Hat Enterprise Linux ES version 2.1: SRPMS: ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/glibc-2.2.4-32.20.src.rpm 86c397f7614278f57b9b814d6adedace glibc-2.2.4-32.20.src.rpm i386: 5b601e85eba293c52d9fe15d8e766a12 glibc-2.2.4-32.20.i386.rpm e1c21533e3d86da39390e93d4b93060e glibc-2.2.4-32.20.i686.rpm b7eda3e6a3b7f24813415c692bde5cff glibc-common-2.2.4-32.20.i386.rpm 0b39ef1f661609a0346675b1877a6288 glibc-devel-2.2.4-32.20.i386.rpm 88ed7d4adfcf4627478367a253a65989 glibc-profile-2.2.4-32.20.i386.rpm b3d6d4389676fc0652277f490d47dfec nscd-2.2.4-32.20.i386.rpm Red Hat Enterprise Linux WS version 2.1: SRPMS: ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/glibc-2.2.4-32.20.src.rpm 86c397f7614278f57b9b814d6adedace glibc-2.2.4-32.20.src.rpm i386: 5b601e85eba293c52d9fe15d8e766a12 glibc-2.2.4-32.20.i386.rpm e1c21533e3d86da39390e93d4b93060e glibc-2.2.4-32.20.i686.rpm b7eda3e6a3b7f24813415c692bde5cff glibc-common-2.2.4-32.20.i386.rpm 0b39ef1f661609a0346675b1877a6288 glibc-devel-2.2.4-32.20.i386.rpm 88ed7d4adfcf4627478367a253a65989 glibc-profile-2.2.4-32.20.i386.rpm b3d6d4389676fc0652277f490d47dfec nscd-2.2.4-32.20.i386.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://www.redhat.com/security/team/key/#package 7. References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0968 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1382 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1453 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://www.redhat.com/security/team/contact/ Copyright 2005 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iD8DBQFCcP5iXlSAg2UNWIIRAiAfAJ4zWUXUcvyQ+T5IlLh14Sf61ImBEACgoE7l Tar3vxLww2u0QMfW/biOfFM= =7I1g - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBQnF/PSh9+71yA2DNAQI0mAP/Tj9YekerSPPkP7dN4AksSJB9V+ricHog ISaCRNmpqvbjvZnSzGEFVYHk1OiX47jSqInTnSKn0xIXbFFx6YI6cDVonIwX/ViY wtou0IEQsdF2kOUOLyNa08ysJ0TLqiwu3MvHHthqvKwD5U5IUXCkBuDvsaMYIdld V2GR+OYSzXk= =i+JD -----END PGP SIGNATURE-----