[FLSA-2005:154276] Updated krb5 packages fix security issues

From: Marc Deslauriers (marcdeslauriers_at_videotron.ca)
Date: 07/24/05

  • Next message: Sune Kloppenborg Jeppesen: "[ GLSA 200507-21 ] fetchmail: Buffer Overflow" 
    Date: Sun, 24 Jul 2005 10:53:21 -0400
To: bugtraq@securityfocus.com, full-disclosure@lists.grok.org.uk

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                   Fedora Legacy Update Advisory

    Synopsis: Updated krb5 packages fix security issues
    Advisory ID: FLSA:154276
    Issue date: 2005-07-24
    Product: Red Hat Linux, Fedora Core
    Keywords: Bugfix
    CVE Names: CAN-2004-0523 CAN-2004-0642 CAN-2004-0643
                       CAN-2004-0644 CAN-2004-0772 CAN-2004-0971
                       CAN-2004-1189 CAN-2005-0468 CAN-2005-0469
    ---------------------------------------------------------------------

    ---------------------------------------------------------------------
    1. Topic:

    Updated Kerberos (krb5) packages that correct multiple security issues
    are now available.

    Kerberos is a networked authentication system that uses a trusted third
    party (a KDC) to authenticate clients and servers to each other.

    Note that some of these issues have already been fixed in Fedora Core 1.
    Please refer to previous advisories for details.

    2. Relevant releases/architectures:

    Red Hat Linux 7.3 - i386
    Red Hat Linux 9 - i386
    Fedora Core 1 - i386

    3. Problem description:

    Several buffer overflows were possible for all Kerberos versions up to
    and including 1.3.3 in the krb5_aname_to_localname library function. The
    Common Vulnerabilities and Exposures project (cve.mitre.org) has
    assigned the name CAN-2004-0523 to this issue.

    Several double-free bugs were found in the Kerberos 5 KDC and libraries.
    A remote attacker could potentially exploit these flaws to execuate
    arbitrary code. The Common Vulnerabilities and Exposures project
    (cve.mitre.org) has assigned the names CAN-2004-0642 and CAN-2004-0643
    to these issues.

    A double-free bug was also found in the krb524 server. The Common
    Vulnerabilities and Exposures project (cve.mitre.org) has assigned the
    name CAN-2004-0772 to this issue.

    An infinite loop bug was found in the Kerberos 5 ASN.1 decoder library.
    A remote attacker may be able to trigger this flaw and cause a denial of
    service. The Common Vulnerabilities and Exposures project
    (cve.mitre.org) has assigned the name CAN-2004-0644 to this issue.

    A heap based buffer overflow bug was found in the administration library
    of Kerberos 1.3.5 and earlier. This bug could allow an authenticated
    remote attacker to execute arbitrary commands on a realm's master
    Kerberos KDC. The Common Vulnerabilities and Exposures project
    (cve.mitre.org) has assigned the name CAN-2004-1189 to this issue.

    Additionally a temporary file bug was found in the Kerberos krb5-send-pr
    program. It is possible that an attacker could create a temporary file
    that would allow an arbitrary file to be overwritten which the victim
    has write access to. The Common Vulnerabilities and Exposures project
    (cve.mitre.org) has assigned the name CAN-2004-0971 to this issue.

    The krb5-workstation package includes a Kerberos-aware telnet client.
    Two buffer overflow flaws were discovered in the way the telnet client
    handles messages from a server. An attacker may be able to execute
    arbitrary code on a victim's machine if the victim can be tricked into
    connecting to a malicious telnet server. The Common Vulnerabilities and
    Exposures project (cve.mitre.org) has assigned the names CAN-2005-0468
    and CAN-2005-0469 to these issues.

    All users of krb5 should upgrade to these updated packages, which
    contain backported security patches to resolve these issues.

    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:

    https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=154276

    6. RPMs required:

    Red Hat Linux 7.3:
    SRPM:
    http://download.fedoralegacy.org/redhat/7.3/updates/SRPMS/krb5-1.2.4-16.1.legacy.src.rpm

    i386:
    http://download.fedoralegacy.org/redhat/7.3/updates/i386/krb5-devel-1.2.4-16.1.legacy.i386.rpm
    http://download.fedoralegacy.org/redhat/7.3/updates/i386/krb5-libs-1.2.4-16.1.legacy.i386.rpm
    http://download.fedoralegacy.org/redhat/7.3/updates/i386/krb5-server-1.2.4-16.1.legacy.i386.rpm
    http://download.fedoralegacy.org/redhat/7.3/updates/i386/krb5-workstation-1.2.4-16.1.legacy.i386.rpm

    Red Hat Linux 9:

    SRPM:
    http://download.fedoralegacy.org/redhat/9/updates/SRPMS/krb5-1.2.7-38.3.legacy.src.rpm

    i386:
    http://download.fedoralegacy.org/redhat/9/updates/i386/krb5-devel-1.2.7-38.3.legacy.i386.rpm
    http://download.fedoralegacy.org/redhat/9/updates/i386/krb5-libs-1.2.7-38.3.legacy.i386.rpm
    http://download.fedoralegacy.org/redhat/9/updates/i386/krb5-server-1.2.7-38.3.legacy.i386.rpm
    http://download.fedoralegacy.org/redhat/9/updates/i386/krb5-workstation-1.2.7-38.3.legacy.i386.rpm

    Fedora Core 1:

    SRPM:
    http://download.fedoralegacy.org/fedora/1/updates/SRPMS/krb5-1.3.4-5.3.legacy.src.rpm

    i386:
    http://download.fedoralegacy.org/fedora/1/updates/i386/krb5-devel-1.3.4-5.3.legacy.i386.rpm
    http://download.fedoralegacy.org/fedora/1/updates/i386/krb5-libs-1.3.4-5.3.legacy.i386.rpm
    http://download.fedoralegacy.org/fedora/1/updates/i386/krb5-server-1.3.4-5.3.legacy.i386.rpm
    http://download.fedoralegacy.org/fedora/1/updates/i386/krb5-workstation-1.3.4-5.3.legacy.i386.rpm

    7. Verification:

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

    4fcc561d7f179fb0672b0f273043c272b790f423
    redhat/7.3/updates/i386/krb5-devel-1.2.4-16.1.legacy.i386.rpm
    07938a62bd7498733b3e535a381fe18223184eda
    redhat/7.3/updates/i386/krb5-libs-1.2.4-16.1.legacy.i386.rpm
    c81a4385ede484d89187d5836d49cacbc5655ee1
    redhat/7.3/updates/i386/krb5-server-1.2.4-16.1.legacy.i386.rpm
    568b4b641c2b9a54eafd14b4099bc72d49f02137
    redhat/7.3/updates/i386/krb5-workstation-1.2.4-16.1.legacy.i386.rpm
    4ee83ff2a6f0bd9bdbf0726ba2fd4acf6c5f43cc
    redhat/7.3/updates/SRPMS/krb5-1.2.4-16.1.legacy.src.rpm
    0111aeb1c5946f18e8a48d1d27d8493c919ca936
    redhat/9/updates/i386/krb5-devel-1.2.7-38.3.legacy.i386.rpm
    35141598dbb9c60e8cd0b3f06b23528ee526bb46
    redhat/9/updates/i386/krb5-libs-1.2.7-38.3.legacy.i386.rpm
    bcaf771e3de01b16e73327cc3643a2ebd4fda6dd
    redhat/9/updates/i386/krb5-server-1.2.7-38.3.legacy.i386.rpm
    4b4b056d4abc0d69c14e7df45fa3b02e76db48fb
    redhat/9/updates/i386/krb5-workstation-1.2.7-38.3.legacy.i386.rpm
    ddc2bdafbecf5801a7238187936fee99966efc65
    redhat/9/updates/SRPMS/krb5-1.2.7-38.3.legacy.src.rpm
    389b8b7b2b59b4363f941e22213be5794e3321a0
    fedora/1/updates/i386/krb5-devel-1.3.4-5.3.legacy.i386.rpm
    f0f7a0e7a002751d9ed19d2c573f9b332759ac00
    fedora/1/updates/i386/krb5-libs-1.3.4-5.3.legacy.i386.rpm
    8d685627a81c1cc51545e8d43db8c3f2acc4a520
    fedora/1/updates/i386/krb5-server-1.3.4-5.3.legacy.i386.rpm
    9aed15c515e7e319fe880b064ecc595565db6575
    fedora/1/updates/i386/krb5-workstation-1.3.4-5.3.legacy.i386.rpm
    d8f81d57720d1b4c4fc393778f82d7119aeb209c
    fedora/1/updates/SRPMS/krb5-1.3.4-5.3.legacy.src.rpm

    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:

    http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0523
    http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0642
    http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0643
    http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0644
    http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0772
    http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0971
    http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1189
    http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0468
    http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0469

    9. Contact:

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

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