OSEC

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From: Dave Ahmad (dasecurityfocus.com)
Date: Thu May 09 2002 - 10:27:40 CDT

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    Hey,

    After posting this, Fozzy sent another message mentioning that he left out
    some credit. I requested that he fix the advisory and re-send it to the
    list, but he hasn't gotten back to me fast enough ;). This needs to go
    out, so here's the correction:

    >I realized this credit problem just after sending my post :
    >"Three weeks ago, XXXXXXXX from Pine released an advisory..." should be :
    >"Three weeks ago, Joost Pol from Pine released an advisory...".

    Dave Ahmad
    SecurityFocus
    www.securityfocus.com

    On Thu, 9 May 2002 fozzydmpfrance.com wrote:

    >
    > The following is research material from FozZy from Hackademy and Hackerz
    > Voice newspaper (http://www.hackerzvoice.org), and can be distributed
    > modified or not if proper credits are given to them. For educational
    > purposes only, no warranty of any kind, I may be wrong, this post could
    > kill you mail reader, etc.
    >
    >
    > -= OVERVIEW =-
    >
    > On current OpenBSD systems, any local user (being or not in the wheel
    > group) can fill the kernel file descriptors table, leading to a denial of
    > service. Because of a flaw in the way the kernel checks closed file
    > descriptors 0-2 when running a setuid program, it is possible to combine
    > these bugs and earn root access by winning a race condition.
    >
    >