[FLSA-2004:1324] Updated libxml2 resolves security vulnerabilities

From: Jesse Keating (jkeating_at_j2solutions.net)
Date: 07/20/04

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    To: fedora-legacy-announce@redhat.com
    Date: Mon, 19 Jul 2004 20:45:50 -0700

    Hash: SHA1

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                   Fedora Legacy Update Advisory

    Synopsis: Updated libxml2 resolves security vulnerability
    Advisory ID: FLSA:1324
    Issue date: 2004-07-19
    Product: Red Hat Linux
    Keywords: Security
    Cross references: https://bugzilla.fedora.us/show_bug.cgi?id=1324
    CVE Names: CAN-2004-0110
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    - ---------------------------------------------------------------------
    1. Topic:

    Updated libxml2 packages that fix an overflow when parsing remote resources
    are now available.

    2. Relevent releases/architectures:

    Red Hat Linux 7.3 - i386

    3. Problem description:

    libxml2 is a library for manipulating XML files.

    Yuuichi Teranishi discovered a flaw in libxml2 versions prior to 2.6.6.
    When fetching a remote resource via FTP or HTTP, libxml2 uses special
    parsing routines. These routines can overflow a buffer if passed a very
    long URL. If an attacker is able to find an application using libxml2 that
    parses remote resources and allows them to influence the URL, then this
    flaw could be used to execute arbitrary code. The Common Vulnerabilities
    and Exposures project (cve.mitre.org) has assigned the name CAN-2004-0110
    to this issue.

    All users are advised to upgrade to these updated packages, which contain a
    backported fix and are not vulnerable to this issue.

    Fedora Legacy would like to thank Johnny Strom for reporting this issue.

    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 currently installed 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 yum and apt. Many
    people find this an easier way to apply updates. To use yum issue:

    yum update

    or to use apt:

    apt-get update; apt-get upgrade

    This will start an interactive process that will result in the appropriate
    RPMs being upgraded on your system. This assumes that you have yum or
    apt-get configured for obtaining Fedora Legacy content. Please visit
    http://www fedoralegacy.org/docs for directions on how to configure yum
    and apt-get.

    5. Bug IDs fixed:

    http://bugzilla.fedora.us - 1324 - libxml2: an overflow when parsing remote

    6. RPMs required:

    Red Hat Linux 7.3:



    7. Verification:

    SHA1 sum Package Name
    - ---------------------------------------------------------------------------


    These packages are GPG signed by Fedora Legacy for security. Our key is
    available from http://www.fedoralegacy org/about/security.php

    You can verify each package with the following command:

        rpm --checksig -v <filename>

    If you only wish to verify that each package has not been corrupted or
    tampered with, examine only the sha1sum with the following command:

        sha1sum <filename>

    8. References:


    9. Contact:

    The Fedora Legacy security contact is <secnotice@fedoralegacy.org>. More
    project details at http://www.fedoralegacy.org

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

    - --
    Jesse Keating RHCE (http://geek.j2solutions.net)
    Fedora Legacy Team (http://www.fedoralegacy.org)
    GPG Public Key (http://geek.j2solutions.net/jkeating.j2solutions.pub)

    Was I helpful? Let others know:
    Version: GnuPG v1.2.4 (GNU/Linux)

    -----END PGP SIGNATURE-----

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