[Full-disclosure] [ GLSA 200507-28 ] AMD64 x86 emulation base libraries: Buffer overflow

From: Thierry Carrez (koon_at_gentoo.org)
Date: 07/30/05

  • Next message: William Warren: "Re: [Full-disclosure] Lynn Preso." 
    Date: Sat, 30 Jul 2005 21:20:46 +0200
To: gentoo-announce@lists.gentoo.org

    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    Gentoo Linux Security Advisory GLSA 200507-28
    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                                http://security.gentoo.org/
    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

      Severity: High
         Title: AMD64 x86 emulation base libraries: Buffer overflow
          Date: July 30, 2005
          Bugs: #100686
            ID: 200507-28

    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    Synopsis
    ========

    The x86 emulation base libraries for AMD64 contain a vulnerable version
    of zlib which could potentially lead to execution of arbitrary code.

    Background
    ==========

    The x86 emulation base libraries for AMD64 emulate the x86 (32-bit)
    architecture on the AMD64 (64-bit) architecture.

    Affected packages
    =================

        -------------------------------------------------------------------
         Package / Vulnerable / Unaffected
        -------------------------------------------------------------------
      1 emul-linux-x86-baselibs < 2.2 >= 2.2
        -------------------------------------------------------------------
         # Package 1 only applies to AMD64 users.

    Description
    ===========

    Earlier versions of emul-linux-x86-baselibs contain a vulnerable
    version of zlib, which may lead to a buffer overflow.

    Impact
    ======

    By creating a specially crafted compressed data stream, attackers can
    overwrite data structures for applications that use the x86 emulation
    base libraries for AMD64, resulting in a Denial of Service and
    potentially arbitrary code execution.

    Workaround
    ==========

    There is no known workaround at this time.

    Resolution
    ==========

    All AMD64 x86 emulation base libraries users should upgrade to the
    latest version:

        # emerge --sync
        # emerge --ask --oneshot --verbose
    ">=app-emulation/emul-linux-x86-baselibs-2.2"

    References
    ==========

      [ 1 ] GLSA 200507-05
            http://www.gentoo.org/security/en/glsa/glsa-200507-05.xml
      [ 2 ] GLSA 200507-19
            http://www.gentoo.org/security/en/glsa/glsa-200507-19.xml
      [ 3 ] CAN-2005-1849
            http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1849
      [ 4 ] CAN-2005-2096
            http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2096

    Availability
    ============

    This GLSA and any updates to it are available for viewing at
    the Gentoo Security Website:

      http://security.gentoo.org/glsa/glsa-200507-28.xml

    Concerns?
    =========

    Security is a primary focus of Gentoo Linux and ensuring the
    confidentiality and security of our users machines is of utmost
    importance to us. Any security concerns should be addressed to
    security@gentoo.org or alternatively, you may file a bug at
    http://bugs.gentoo.org.

    License
    =======

    Copyright 2005 Gentoo Foundation, Inc; referenced text
    belongs to its owner(s).

    The contents of this document are licensed under the
    Creative Commons - Attribution / Share Alike license.

    http://creativecommons.org/licenses/by-sa/2.0

    _______________________________________________
    Full-Disclosure - We believe in it.
    Charter: http://lists.grok.org.uk/full-disclosure-charter.html
    Hosted and sponsored by Secunia - http://secunia.com/

  • Next message: William Warren: "Re: [Full-disclosure] Lynn Preso."

    Relevant Pages