full-disclosure - Workaround for Ac1db1tch3z exploit.

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Message-ID: <s1wfwx9lu9a.fsf@cornavin.uio.no>
Date: Thu, 16 Sep 2010 14:58:57 +0200
From: Terje Malmedal <terje.malmedal@...t.uio.no>
To: full-disclosure@...ts.grok.org.uk
Subject: Workaround for Ac1db1tch3z exploit.

If you do not actually need to run any 32bits binaries on x86_64 you can
do: 

echo ':32bits:M:0:\x7fELF\x01::/bin/echo:' > /proc/sys/fs/binfmt_misc/register

This will make the kernel run /bin/echo filename instead of executing
the file whenever it sees a 32bit ELF binary.

Of course if you actually *need* to run some 32bits binaries this will
not help you. 

-- 
 - Terje
malmedal@...t.uio.no

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