[RHSA-2003:403-01] Updated lftp packages fix security vulnerability

bugzilla_at_redhat.com
Date: 12/16/03

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                       Red Hat Security Advisory

    Synopsis: Updated lftp packages fix security vulnerability
    Advisory ID: RHSA-2003:403-01
    Issue date: 2003-12-16
    Updated on: 2003-12-16
    Product: Red Hat Linux
    Keywords:
    Cross references:
    Obsoletes:
    CVE Names: CAN-2003-0963
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    1. Topic:

    Updated lftp packages are now available that fix a buffer overflow
    security vulnerability.

    2. Relevant releases/architectures:

    Red Hat Linux 7.2 - i386, ia64
    Red Hat Linux 7.3 - i386
    Red Hat Linux 8.0 - i386
    Red Hat Linux 9 - i386

    3. Problem description:

    lftp is a command-line file transfer program supporting FTP and HTTP
    protocols.

    Ulf Härnhammar discovered a buffer overflow bug in versions of lftp up to
    and including 2.6.9. An attacker could create a carefully crafted
    directory on a website such that, if a user connects to that directory
    using the lftp client and subsequently issues a 'ls' or 'rels' command, the
    attacker could execute arbitrary code on the users machine. The Common
    Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name
    CAN-2003-0963 to this issue.

    Users of lftp are advised to upgrade to these erratum packages, which
    contain a backported security patch and are not vulnerable to this issue.

    Red Hat would like to thank Ulf Härnhammar for discovering and alerting us
    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:

    up2date

    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:

    https://rhn.redhat.com/help/latest-up2date.pxt

    5. RPMs required:

    Red Hat Linux 7.2:

    SRPMS:
    ftp://updates.redhat.com/7.2/en/os/SRPMS/lftp-2.4.9-2.src.rpm

    i386:
    ftp://updates.redhat.com/7.2/en/os/i386/lftp-2.4.9-2.i386.rpm

    ia64:
    ftp://updates.redhat.com/7.2/en/os/ia64/lftp-2.4.9-2.ia64.rpm

    Red Hat Linux 7.3:

    SRPMS:
    ftp://updates.redhat.com/7.3/en/os/SRPMS/lftp-2.4.9-2.src.rpm

    i386:
    ftp://updates.redhat.com/7.3/en/os/i386/lftp-2.4.9-2.i386.rpm

    Red Hat Linux 8.0:

    SRPMS:
    ftp://updates.redhat.com/8.0/en/os/SRPMS/lftp-2.5.2-6.src.rpm

    i386:
    ftp://updates.redhat.com/8.0/en/os/i386/lftp-2.5.2-6.i386.rpm

    Red Hat Linux 9:

    SRPMS:
    ftp://updates.redhat.com/9/en/os/SRPMS/lftp-2.6.3-4.src.rpm

    i386:
    ftp://updates.redhat.com/9/en/os/i386/lftp-2.6.3-4.i386.rpm

    6. Verification:

    MD5 sum Package Name
    - --------------------------------------------------------------------------
    fc135158bb815852827c057342a163ae 7.2/en/os/SRPMS/lftp-2.4.9-2.src.rpm
    a9e10adf4c53f444ae4c628c082ac45d 7.2/en/os/i386/lftp-2.4.9-2.i386.rpm
    429b62e868da2b23d6f55ee9fe922687 7.2/en/os/ia64/lftp-2.4.9-2.ia64.rpm
    fc135158bb815852827c057342a163ae 7.3/en/os/SRPMS/lftp-2.4.9-2.src.rpm
    a9e10adf4c53f444ae4c628c082ac45d 7.3/en/os/i386/lftp-2.4.9-2.i386.rpm
    b62685fd9517fb489418165afd78fd76 8.0/en/os/SRPMS/lftp-2.5.2-6.src.rpm
    9ba7d379882bdebcca3fdfb86a153ffe 8.0/en/os/i386/lftp-2.5.2-6.i386.rpm
    a4ef0a84493aa570bc7625904bc42c18 9/en/os/SRPMS/lftp-2.6.3-4.src.rpm
    7bee4629496d2085856c103927470c28 9/en/os/i386/lftp-2.6.3-4.i386.rpm

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

    http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0963

    8. Contact:

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

    Copyright 2003 Red Hat, Inc.
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