[EXPL] Multiple Vulnerabilities in Konversation (Exploit)

From: SecuriTeam (support_at_securiteam.com)
Date: 01/23/05

  • Next message: SecuriTeam: "[REVS] SQL Injection Attacks by Example" 
    To: list@securiteam.com
Date: 23 Jan 2005 17:14:59 +0200

    The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
    - - promotion

    The SecuriTeam alerts list - Free, Accurate, Independent.

    Get your security news from a reliable source.
    http://www.securiteam.com/mailinglist.html

    - - - - - - - - -

      Multiple Vulnerabilities in Konversation (Exploit)
    ------------------------------------------------------------------------

    SUMMARY

    Multiple vulnerabilities have been discovered in Konversation, an IRC
    client for KDE. One allows execution of arbitrary commands via the %
    expansion mechanism, another allows execution of arbitrary commands via
    the command line support scripts. The following two proof of concepts can
    be used to test your system for the mentioned vulnerability.

    DETAILS

    Vulnerable Systems:
     * Konversation version 0.15.0 and prior

    Immune Systems:
     * Konversation version 0.15.1 or newer

    % Expanding
    Konversation's Server::parseWildcards function contains a vulnerability
    that allows a remote attacker to utilize its expanding '%' feature to
    cause it to execute arbitrary code.

    Example:
    Utilizing the following channel name #%n/quit%n will cause a receiving an
    invitation to this channel to exit Konversation.

    Included Perl Scripts Vulnerable to Shell Command Injection
    Perl scripts included with Konversation execute a commands line similar
    to:
    exec ("dcop $PORT Konversation say $SERVER \"$TARGET\" output");
    Where the shell characters in $SERVER or $TARGET aren't escaped.

    Example:
    Therefore, joining a channel named #`kwrite` and executing the sample
    script (for example typing /uptime) will start kwrite.

    Solution:
    These problems are fixed in version 0.15.1, which was released 19/01/05
    Individual patches can be downloaded at:
     <http://wouter.coekaerts.be/files/konversation-parse.diff>
    http://wouter.coekaerts.be/files/konversation-parse.diff
     <http://wouter.coekaerts.be/files/konversation-quickconnect.diff>
    http://wouter.coekaerts.be/files/konversation-quickconnect.diff
     <http://wouter.coekaerts.be/files/konversation-scripts.diff>
    http://wouter.coekaerts.be/files/konversation-scripts.diff

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:wouter@coekaerts.be> Wouter
    Coekaerts.
    The original article can be found at:
    <http://wouter.coekaerts.be/konversation.html>
    http://wouter.coekaerts.be/konversation.html

    ========================================

    This bulletin is sent to members of the SecuriTeam mailing list.
    To unsubscribe from the list, send mail with an empty subject line and body to: list-unsubscribe@securiteam.com
    In order to subscribe to the mailing list, simply forward this email to: list-subscribe@securiteam.com

    ====================
    ====================

    DISCLAIMER:
    The information in this bulletin is provided "AS IS" without warranty of any kind.
    In no event shall we be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages.

  • Next message: SecuriTeam: "[REVS] SQL Injection Attacks by Example"

    Relevant Pages