[Full-Disclosure] [FLSA-2004:1735] Updated cvs packages fix security vulnerabilities

From: Dominic Hargreaves (dom_at_earth.li)
Date: 10/07/04

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    To: bugtraq@securityfocus.com, full-disclosure@lists.netsys.com
Date: Thu, 7 Oct 2004 18:12:44 +0100

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                   Fedora Legacy Update Advisory

    Synopsis: Updated cvs resolves security vulnerabilities
    Advisory ID: FLSA:1735
    Issue date: 2004-10-07
    Product: Red Hat Linux
    Keywords: Security
    Cross references: https://bugzilla.fedora.us/show_bug.cgi?id=1735
    CVE Names: CAN-2004-0414, CAN-2004-0416, CAN-2004-0417,
                       CAN-2004-0418, CAN-2004-0778
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    1. Topic:

    Updated cvs packages that fix a security vulnerabilities are now
    available.

    CVS is a version control system frequently used to manage source code
    repositories.

    2. Relevant releases/architectures:

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

    3. Problem description:

    While investigating a previously fixed vulnerability, Derek Price
    discovered a flaw relating to malformed "Entry" lines which lead to a
    missing NULL terminator. The Common Vulnerabilities and Exposures
    project (cve.mitre.org) has assigned the name CAN-2004-0414 to this issue.

    Stefan Esser and Sebastian Krahmer conducted an audit of CVS and fixed a
    number of issues that may have had security consequences.

    Among the issues deemed likely to be exploitable were:

    - a double-free relating to the error_prog_name string (CAN-2004-0416)
    - an argument integer overflow (CAN-2004-0417)
    - out-of-bounds writes in serv_notify (CAN-2004-0418).

    An attacker who has access to a CVS server may be able to execute arbitrary
    code under the UID on which the CVS server is executing.

    Users of CVS are advised to upgrade to this updated package, which contains
    backported patches correcting 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:

    http://bugzilla.fedora.us - 1735 - cvs package fixes security issues
    CAN-2004-0414,0416,0417,0418

    6. RPMs required:

    Red Hat Linux 7.3:

    SRPM:
    http://download.fedoralegacy.org/redhat/7.3/updates/SRPMS/cvs-1.11.1p1-16.legacy.2.src.rpm

    i386:
    http://download.fedoralegacy.org/redhat/7.3/updates/i386/cvs-1.11.1p1-16.legacy.2.i386.rpm

    Red Hat Linux 9:

    SRPM:
    http://download.fedoralegacy.org/redhat/9/updates/SRPMS/cvs-1.11.2-24.legacy.src.rpm

    i386:
    http://download.fedoralegacy.org/redhat/9/updates/i386/cvs-1.11.2-24.legacy.i386.rpm

    7. Verification:

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

    d309756c60dcf33235581f2174db39fe103bac27 7.3/updates/SRPMS/cvs-1.11.1p1-16.legacy.2.src.rpm
    9620756fc080096881f062b6272306a1ba57fb40 7.3/updates/i386/cvs-1.11.1p1-16.legacy.2.i386.rpm
    ffa2ea4c2689dbbd304364a14517a0e9f1747be2 9/updates/SRPMS/cvs-1.11.2-24.legacy.src.rpm
    9f3eac397a31464cc39bad75877e6f5a11c7c31d 9/updates/i386/cvs-1.11.2-24.legacy.i386.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:

    https://rhn.redhat.com/errata/RHSA-2004-233.html
    https://ccvs.cvshome.org/source/browse/ccvs/src/history.c?r1=1.73&r2=1.74

    9. Contact:

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

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