[UNIX] Kcheckpass Local Root Vulnerability

From: SecuriTeam (support_at_securiteam.com)
Date: 09/07/05

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      Kcheckpass Local Root Vulnerability
    ------------------------------------------------------------------------

    SUMMARY

    Ilja van Sprundel from suresec.org notified the KDE security team about a
    serious lock file handling error in kcheckpass that can, in some
    configurations, be used to gain root access.

    In order for an exploit to succeed, the directory /var/lock has to be
    writeable for a user that is allowed to invoke kcheckpass.

    DETAILS

    Vulnerable Systems:
     * All KDE releases starting from KDE 3.2.0 up to including KDE 3.4.2

    CVE Information:
     <http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2494>
    CAN-2005-2494

    Solution:
    Source code patches have been made available which fix these
    vulnerabilities. Contact your OS vendor / binary package provider for
    information about how to obtain updated binary packages.

    Patch:
    Patch for KDE 3.4.2 is available from
    ftp://ftp.kde.org/pub/kde/security_patches:
    86f7d6fd68568dfd1edcae453958ba31 post-3.4.2-kdebase-kcheckpass.diff

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:mueller@kde.org> Dirk
    Mueller.
    The original article can be found at:
    <http://www.kde.org/info/security/advisory-20050905-1.txt>
    http://www.kde.org/info/security/advisory-20050905-1.txt

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