[NT] Project IGI 2: Covert Strike Format String

From: SecuriTeam (support_at_securiteam.com)
Date: 04/07/04

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Date: 7 Apr 2004 17:05:49 +0200

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      Project IGI 2: Covert Strike Format String
    ------------------------------------------------------------------------

    SUMMARY

     <http://www.innerloop.com> Project IGI 2 is a game developed by Innerloop
    and released in February 2003. Its creators have defined it as "a tactical
    stealth-based FPS with plenty of tension and action".

    The IGI multiplayer server suffers from a format string vulnerability when
    parsing RCON commands.

    DETAILS

    Vulnerable Systems:
     * Project IGI 2: Covert Strike version 1.31 and prior

    While logging RCON commands the multiplayer server won't perform sanity
    checks on the received RCON commands. A format string entered as a command
    will be logged directly without any filtering. Example:

    - Attacker sends: /hello-%08x.%08x.%08x.%08x
    - Server logs: ? ?[17:17:28] Consoled:
    'hello-082aeefc.00000131.0061b64c.00000011' run from 192.168.0.3:32768

    A proof-of-concept example can be found at
    <http://aluigi.altervista.org/poc/igi2fs.zip>
    http://aluigi.altervista.org/poc/igi2fs.zip which can demonstrate and test
    for the vulnerability.

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:aluigi@altervista.org> Luigi
    Auriemma.

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