[FLSA-2004:1833] Updated lha resolves security vulnerabilities

From: Marc Deslauriers (marcdeslauriers_at_videotron.ca)
Date: 10/14/04

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    Date: Wed, 13 Oct 2004 18:47:50 -0400
To: "bugtraq@securityfocus.com" <bugtraq@securityfocus.com>, "full-disclosure@lists.netsys.com" <full-disclosure@lists.netsys.com>

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                   Fedora Legacy Update Advisory

    Synopsis: Updated lha resolves security vulnerabilities
    Advisory ID: FLSA:1833
    Issue date: 2004-10-13
    Product: Red Hat Linux
    Keywords: Security
    Cross references: https://bugzilla.fedora.us/show_bug.cgi?id=1833
    CVE Names: CAN-2004-0234, CAN-2004-0235, CAN-2004-0694,
                       CAN-2004-0745, CAN-2004-0769, CAN-2004-0771
    -----------------------------------------------------------------------

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

    Updated lha packages that fix multiple security vulnerabilities
    are now available.

    LHA is an archiving and compression utility for LHarc format archives.

    2. Relevant releases/architectures:

    Red Hat Linux 7.3 - i386
    Red Hat Linux 9 - i386

    3. Problem description:

    Ulf Harnhammar discovered two stack buffer overflows and two directory
    traversal flaws in LHA.

    An attacker could exploit the buffer overflows by creating a carefully
    crafted LHA archive in such a way that arbitrary code would be executed
    when the archive is tested or extracted by a victim. The Common
    Vulnerabilities and Exposures project (cve.mitre.org) has assigned the
    name CAN-2004-0234 to this issue.

    An attacker could exploit the directory traversal issues to create files
    as the victim outside of the expected directory. The Common
    Vulnerabilities and Exposures project (cve.mitre.org) has assigned the
    name CAN-2004-0235 to this issue.

    Lukasz Wojtow discovered a stack-based buffer overflow in all versions
    of lha up to and including version 1.14. A carefully created archive
    could allow an attacker to execute arbitrary code when a victim extracts
    or tests the archive. The Common Vulnerabilities and Exposures project
    (cve.mitre.org) has assigned the name CAN-2004-0769 to this issue.

    Buffer overflows were discovered in the command line processing of all
    versions of lha up to and including version 1.14. If a malicious user
    could trick a victim into passing a specially crafted command line to
    the lha command, it is possible that arbitrary code could be executed.
    The Common Vulnerabilities and Exposures project (cve.mitre.org) has
    assigned the names CAN-2004-0771 and CAN-2004-0694 to these issues.

    Thomas Biege discovered a shell meta character command execution
    vulnerability in all versions of lha up to and including 1.14. An
    attacker could create a directory with shell meta characters in its name
    which could lead to arbitrary command execution. The Common
    Vulnerabilities and Exposures project (cve.mitre.org) has assigned the
    name CAN-2004-0745 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.

    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 - 1833 - CAN-2004-0694,0745,0769,0771 -
    Another buffer overflow in LHA
    http://bugzilla.fedora.us - 1547 - LHA directory traversal, buffer
    overflow vulns

    6. RPMs required:

    Red Hat Linux 7.3:

    SRPM:
    http://download.fedoralegacy.org/redhat/7.3/updates/SRPMS/lha-1.14i-4.7.3.3.legacy.src.rpm

    i386:
    http://download.fedoralegacy.org/redhat/7.3/updates/i386/lha-1.14i-4.7.3.3.legacy.i386.rpm

    Red Hat Linux 9:

    SRPM:
    http://download.fedoralegacy.org/redhat/9/updates/SRPMS/lha-1.14i-9.4.legacy.src.rpm

    i386:
    http://download.fedoralegacy.org/redhat/9/updates/i386/lha-1.14i-9.4.legacy.i386.rpm

    7. Verification:

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

    421a0998d84a2b75ebaa0bb334273ce1dad2be88
    7.3/updates/i386/lha-1.14i-4.7.3.3.legacy.i386.rpm
    aa6033fd436ea908b38b2035f096223f92ed780d
    7.3/updates/SRPMS/lha-1.14i-4.7.3.3.legacy.src.rpm
    4458d9eec9f7706070f67e0263aab497bced075a
    9/updates/i386/lha-1.14i-9.4.legacy.i386.rpm
    b1ae50a84ca44b9e515757b6e0363ce5bf53d8ab
    9/updates/SRPMS/lha-1.14i-9.4.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://marc.theaimsgroup.com/?l=bugtraq&m=108668791510153
    http://lw.ftw.zamosc.pl/lha-exploit.txt

    9. Contact:

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

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

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