[UNIX] Nuked Klan Arbitrary Code Execution Vulnerabilities

From: support@securiteam.com
Date: 03/08/03

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Date: 8 Mar 2003 16:29:59 +0200

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      Nuked Klan Arbitrary Code Execution Vulnerabilities
    ------------------------------------------------------------------------

    SUMMARY

     <http://www.nuked-klan.org> Nuked Klan is a php gateway for "clans".
    Several security vulnerabilities allow a remote user to gain information
    and execute arbitrary commands on the server.

    DETAILS

    Vulnerable versions:
    Nuked Klans version 1.3beta and below

    Many vulnerabilities were found in the Nuked Klan gateway. They are
    exploitable by using CSS (Cross Site Scripting) attacks.
    Those vulnerabilities were found in the Team, News and Links (Liens)
    modules, and allow the attacker to launch arbitrary commands, link to
    arbitrary files and gain sensitive information about system setup and
    directory structure.

    Exploit:
    Attack the desired module as follows:

    CSS attack:
    Launch:
    http://www.[nuked-klanz.site]//index.php?file={module.name}&op=[script]arbitary.script[/script]

    Information Gain
    Launch:
    http://www.[nuked-klanz.site]//index.php?file={module.name}&op=phpinfo

    Notes:
    Replace "[""]" in script with "<" ">" respectively.
    {module.name} = [Team | News | Liens]
    Information gain might work even if scripts won't run - phpinfo gives a
    detailed information about the server's configuration.

    Solution:
    None at this time.

    ADDITIONAL INFORMATION

    See also: <http://www.security-corp.org/index.php?ink=4-15-1> Security
    Corp
    Information was provided by <mailto:gregory.lebras@security-corp.org>
    Gregory Le Bras from Security Corporation

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