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Red Hat alert RHSA-2010:0872-02 (glibc)

From:  bugzilla@redhat.com
To:  rhsa-announce@redhat.com, enterprise-watch-list@redhat.com
Subject:  [RHSA-2010:0872-02] Important: glibc security and bug fix update
Date:  Wed, 10 Nov 2010 12:41:32 -0700
Message-ID:  <201011101941.oAAJfWDe017594@int-mx01.intmail.prod.int.phx2.redhat.com>
Archive-link:  Article, Thread

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: glibc security and bug fix update Advisory ID: RHSA-2010:0872-02 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2010-0872.html Issue date: 2010-11-10 CVE Names: CVE-2010-3847 CVE-2010-3856 ===================================================================== 1. Summary: Updated glibc packages that fix two security issues and two bugs are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64 3. Description: The glibc packages contain the standard C libraries used by multiple programs on the system. These packages contain the standard C and the standard math libraries. Without these two libraries, a Linux system cannot function properly. It was discovered that the glibc dynamic linker/loader did not handle the $ORIGIN dynamic string token set in the LD_AUDIT environment variable securely. A local attacker with write access to a file system containing setuid or setgid binaries could use this flaw to escalate their privileges. (CVE-2010-3847) It was discovered that the glibc dynamic linker/loader did not perform sufficient safety checks when loading dynamic shared objects (DSOs) to provide callbacks for its auditing API during the execution of privileged programs. A local attacker could use this flaw to escalate their privileges via a carefully-chosen system DSO library containing unsafe constructors. (CVE-2010-3856) Red Hat would like to thank Tavis Ormandy for reporting the CVE-2010-3847 issue, and Ben Hawkes and Tavis Ormandy for reporting the CVE-2010-3856 issue. This update also fixes the following bugs: * Previously, the generic implementation of the strstr() and memmem() functions did not handle certain periodic patterns correctly and could find a false positive match. This error has been fixed, and both functions now work as expected. (BZ#643341) * The "TCB_ALIGNMENT" value has been increased to 32 bytes to prevent applications from crashing during symbol resolution on 64-bit systems with support for Intel AVX vector registers. (BZ#643343) All users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. 4. Solution: Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 643306 - CVE-2010-3847 glibc: ld.so insecure handling of $ORIGIN in LD_AUDIT for setuid/setgid programs 643341 - memmem, strstr, and strcasestr are broken 643343 - [Intel 6.0 Bug] Dynamic linker failed to align TCB for AVX 645672 - CVE-2010-3856 glibc: ld.so arbitrary DSO loading via LD_AUDIT in setuid/setgid programs 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/... i386: glibc-2.12-1.7.el6_0.3.i686.rpm glibc-common-2.12-1.7.el6_0.3.i686.rpm glibc-debuginfo-2.12-1.7.el6_0.3.i686.rpm glibc-devel-2.12-1.7.el6_0.3.i686.rpm glibc-headers-2.12-1.7.el6_0.3.i686.rpm glibc-utils-2.12-1.7.el6_0.3.i686.rpm nscd-2.12-1.7.el6_0.3.i686.rpm x86_64: glibc-2.12-1.7.el6_0.3.i686.rpm glibc-2.12-1.7.el6_0.3.x86_64.rpm glibc-common-2.12-1.7.el6_0.3.x86_64.rpm glibc-debuginfo-2.12-1.7.el6_0.3.i686.rpm glibc-debuginfo-2.12-1.7.el6_0.3.x86_64.rpm glibc-devel-2.12-1.7.el6_0.3.i686.rpm glibc-devel-2.12-1.7.el6_0.3.x86_64.rpm glibc-headers-2.12-1.7.el6_0.3.x86_64.rpm glibc-utils-2.12-1.7.el6_0.3.x86_64.rpm nscd-2.12-1.7.el6_0.3.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/... i386: glibc-debuginfo-2.12-1.7.el6_0.3.i686.rpm glibc-static-2.12-1.7.el6_0.3.i686.rpm x86_64: glibc-debuginfo-2.12-1.7.el6_0.3.x86_64.rpm glibc-static-2.12-1.7.el6_0.3.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Compute... x86_64: glibc-2.12-1.7.el6_0.3.i686.rpm glibc-2.12-1.7.el6_0.3.x86_64.rpm glibc-common-2.12-1.7.el6_0.3.x86_64.rpm glibc-debuginfo-2.12-1.7.el6_0.3.i686.rpm glibc-debuginfo-2.12-1.7.el6_0.3.x86_64.rpm glibc-devel-2.12-1.7.el6_0.3.i686.rpm glibc-devel-2.12-1.7.el6_0.3.x86_64.rpm glibc-headers-2.12-1.7.el6_0.3.x86_64.rpm glibc-utils-2.12-1.7.el6_0.3.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Compute... x86_64: glibc-debuginfo-2.12-1.7.el6_0.3.x86_64.rpm glibc-static-2.12-1.7.el6_0.3.x86_64.rpm nscd-2.12-1.7.el6_0.3.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/... i386: glibc-2.12-1.7.el6_0.3.i686.rpm glibc-common-2.12-1.7.el6_0.3.i686.rpm glibc-debuginfo-2.12-1.7.el6_0.3.i686.rpm glibc-devel-2.12-1.7.el6_0.3.i686.rpm glibc-headers-2.12-1.7.el6_0.3.i686.rpm glibc-utils-2.12-1.7.el6_0.3.i686.rpm nscd-2.12-1.7.el6_0.3.i686.rpm ppc64: glibc-2.12-1.7.el6_0.3.ppc.rpm glibc-2.12-1.7.el6_0.3.ppc64.rpm glibc-common-2.12-1.7.el6_0.3.ppc64.rpm glibc-debuginfo-2.12-1.7.el6_0.3.ppc.rpm glibc-debuginfo-2.12-1.7.el6_0.3.ppc64.rpm glibc-devel-2.12-1.7.el6_0.3.ppc.rpm glibc-devel-2.12-1.7.el6_0.3.ppc64.rpm glibc-headers-2.12-1.7.el6_0.3.ppc64.rpm glibc-utils-2.12-1.7.el6_0.3.ppc64.rpm nscd-2.12-1.7.el6_0.3.ppc64.rpm s390x: glibc-2.12-1.7.el6_0.3.s390.rpm glibc-2.12-1.7.el6_0.3.s390x.rpm glibc-common-2.12-1.7.el6_0.3.s390x.rpm glibc-debuginfo-2.12-1.7.el6_0.3.s390.rpm glibc-debuginfo-2.12-1.7.el6_0.3.s390x.rpm glibc-devel-2.12-1.7.el6_0.3.s390.rpm glibc-devel-2.12-1.7.el6_0.3.s390x.rpm glibc-headers-2.12-1.7.el6_0.3.s390x.rpm glibc-utils-2.12-1.7.el6_0.3.s390x.rpm nscd-2.12-1.7.el6_0.3.s390x.rpm x86_64: glibc-2.12-1.7.el6_0.3.i686.rpm glibc-2.12-1.7.el6_0.3.x86_64.rpm glibc-common-2.12-1.7.el6_0.3.x86_64.rpm glibc-debuginfo-2.12-1.7.el6_0.3.i686.rpm glibc-debuginfo-2.12-1.7.el6_0.3.x86_64.rpm glibc-devel-2.12-1.7.el6_0.3.i686.rpm glibc-devel-2.12-1.7.el6_0.3.x86_64.rpm glibc-headers-2.12-1.7.el6_0.3.x86_64.rpm glibc-utils-2.12-1.7.el6_0.3.x86_64.rpm nscd-2.12-1.7.el6_0.3.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/... i386: glibc-debuginfo-2.12-1.7.el6_0.3.i686.rpm glibc-static-2.12-1.7.el6_0.3.i686.rpm ppc64: glibc-debuginfo-2.12-1.7.el6_0.3.ppc64.rpm glibc-static-2.12-1.7.el6_0.3.ppc64.rpm s390x: glibc-debuginfo-2.12-1.7.el6_0.3.s390x.rpm glibc-static-2.12-1.7.el6_0.3.s390x.rpm x86_64: glibc-debuginfo-2.12-1.7.el6_0.3.x86_64.rpm glibc-static-2.12-1.7.el6_0.3.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Worksta... i386: glibc-2.12-1.7.el6_0.3.i686.rpm glibc-common-2.12-1.7.el6_0.3.i686.rpm glibc-debuginfo-2.12-1.7.el6_0.3.i686.rpm glibc-devel-2.12-1.7.el6_0.3.i686.rpm glibc-headers-2.12-1.7.el6_0.3.i686.rpm glibc-utils-2.12-1.7.el6_0.3.i686.rpm nscd-2.12-1.7.el6_0.3.i686.rpm x86_64: glibc-2.12-1.7.el6_0.3.i686.rpm glibc-2.12-1.7.el6_0.3.x86_64.rpm glibc-common-2.12-1.7.el6_0.3.x86_64.rpm glibc-debuginfo-2.12-1.7.el6_0.3.i686.rpm glibc-debuginfo-2.12-1.7.el6_0.3.x86_64.rpm glibc-devel-2.12-1.7.el6_0.3.i686.rpm glibc-devel-2.12-1.7.el6_0.3.x86_64.rpm glibc-headers-2.12-1.7.el6_0.3.x86_64.rpm glibc-utils-2.12-1.7.el6_0.3.x86_64.rpm nscd-2.12-1.7.el6_0.3.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Worksta... i386: glibc-debuginfo-2.12-1.7.el6_0.3.i686.rpm glibc-static-2.12-1.7.el6_0.3.i686.rpm x86_64: glibc-debuginfo-2.12-1.7.el6_0.3.x86_64.rpm glibc-static-2.12-1.7.el6_0.3.x86_64.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: https://www.redhat.com/security/data/cve/CVE-2010-3847.html https://www.redhat.com/security/data/cve/CVE-2010-3856.html http://www.redhat.com/security/updates/classification/#im... 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://www.redhat.com/security/team/contact/ Copyright 2010 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFM2vVBXlSAg2UNWIIRAnrHAJ9oUOQ0B/t7qQKdbe13H5G9a2BbYwCgin8R zI5tnvloLFQFUvG+Ifda8uI= =Nk0i -----END PGP SIGNATURE----- -- Enterprise-watch-list mailing list Enterprise-watch-list@redhat.com https://www.redhat.com/mailman/listinfo/enterprise-watch-...


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