[RHSA-2004:181-01] Updated libpng packages fix crash

Date: 04/30/04

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    Date: Fri, 30 Apr 2004 15:32 -0400
    To: redhat-watch-list@redhat.com, bugtraq@securityfocus.com, full-disclosure@lists.netsys.com

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    - ---------------------------------------------------------------------
                       Red Hat Security Advisory

    Synopsis: Updated libpng packages fix crash
    Advisory ID: RHSA-2004:181-01
    Issue date: 2004-04-30
    Updated on: 2004-04-30
    Product: Red Hat Linux
    Cross references:
    CVE Names: CAN-2004-0421
    - ---------------------------------------------------------------------

    1. Topic:

    Updated libpng packages that fix a out of bounds memory access are now

    2. Relevant releases/architectures:

    Red Hat Linux 9 - i386

    3. Problem description:

    The libpng package contains a library of functions for creating and
    manipulating PNG (Portable Network Graphics) image format files.

    Steve Grubb discovered a out of bounds memory access flaw in libpng. An
    attacker could carefully craft a PNG file in such a way that it would cause
    an application linked to libpng to crash when opened by a victim. This
    issue may not be used to execute arbitrary code.

    Users are advised to upgrade to these updated packages that contain a
    backported security fix not vulnerable to 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 Red Hat Network. Many
    people find this an easier way to apply updates. To use Red Hat Network,
    launch the Red Hat Update Agent with the following command:


    This will start an interactive process that will result in the appropriate
    RPMs being upgraded on your system.

    If up2date fails to connect to Red Hat Network due to SSL
    Certificate Errors, you need to install a version of the
    up2date client with an updated certificate. The latest version of
    up2date is available from the Red Hat FTP site and may also be
    downloaded directly from the RHN website:


    5. RPMs required:

    Red Hat Linux 9:



    6. Verification:

    MD5 sum Package Name
    - --------------------------------------------------------------------------

    e45674dfbfc641bae05438da90bc5cb8 9/en/os/SRPMS/libpng-1.2.2-20.src.rpm
    591b1c8a152e1dcac63b82640ffa14e0 9/en/os/SRPMS/libpng10-1.0.13-11.src.rpm
    3f1c2ee426702c64e73ee453afb6216f 9/en/os/i386/libpng-1.2.2-20.i386.rpm
    a08847d084032f99a1b33d3b5a9fba33 9/en/os/i386/libpng-devel-1.2.2-20.i386.rpm
    800356c0126f967b9353279ebc8c321c 9/en/os/i386/libpng10-1.0.13-11.i386.rpm
    505508162b208c95b5bd3e63e9cafbfd 9/en/os/i386/libpng10-devel-1.0.13-11.i386.rpm

    These packages are GPG signed by Red Hat for security. Our key is
    available from https://www.redhat.com/security/team/key.html

    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 md5sum with the following command:
        md5sum <filename>

    7. References:


    8. Contact:

    The Red Hat security contact is <secalert@redhat.com>. More contact
    details at https://www.redhat.com/security/team/contact.html

    Copyright 2004 Red Hat, Inc.
    Version: GnuPG v1.0.7 (GNU/Linux)

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

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