[Full-Disclosure] [FLSA-2005:2058] Updated cdrtools packages fix a security issue

From: Marc Deslauriers (marcdeslauriers_at_videotron.ca)
Date: 02/20/05

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    Date: Sun, 20 Feb 2005 17:29:46 -0500
    To: bugtraq@securityfocus.com, full-disclosure@lists.netsys.com

                    Fedora Legacy Update Advisory

    Synopsis: Updated cdrtools packages fix a security issue
    Advisory ID: FLSA:2058
    Issue date: 2005-02-20
    Product: Red Hat Linux
    Keywords: Bugfix
    Cross references: https://bugzilla.fedora.us/show_bug.cgi?id=2058
    CVE Names: CAN-2004-0806

    1. Topic:

    Updated cdrtools packages that fix a privilege escalation vulnerability
    are now available.

    Cdrtools is a collection of CD/DVD utilities.

    2. Relevant releases/architectures:

    Red Hat Linux 9 - i386

    3. Problem description:

    Max Vozeler found that the cdrecord program, when is set suid root,
    fails to drop privileges when it executes a program specified by the
    user through the $RSH environment variable. This can be abused by a
    local attacker to obtain root privileges. In the default configuration
    of Red Hat Linux 9, the cdrecord program is not set suid root and this
    attack is not possible. The Common Vulnerabilities and Exposures project
    (cve.mitre.org) has assigned the name CAN-2004-0806 to this issue.

    Users of cdrtools are advised to upgrade to these errata packages, which
    contain a backported patch correcting 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 - bug #2058 - cdrecord suid privilege escalation

    6. RPMs required:

    Red Hat Linux 9:



    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




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