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Message-ID: <20090720133652.GA14021@grsecurity.net>
Date: Mon, 20 Jul 2009 09:36:52 -0400
From: spender@...ecurity.net (Brad Spengler)
To: Marcus Meissner <meissner@...e.de>
Cc: oss-security@...ts.openwall.com,
dailydave <dailydave@...ts.immunitysec.com>
Subject: Re: [Dailydave] Linux 2.6.30+/SELinux/RHEL5 test kernel 0day, exploiting the unexploitable
> I am not sure about the SELinux policy error he used to
> exploit the RHEL 5.? Beta.
It was a default RHEL 5.3 SELinux policy. The same vulnerability from
the policy exists in Fedora 10 and 11. I haven't tested anything else,
but I imagine lots more are vulnerable (and it doesn't matter what
kernel you're running). There will be a CVE for this vulnerability as
well.
(Really there should have been a CVE for the lack of
-fno-delete-null-pointer-checks instead of pretending the only problem
was /dev/net/tun. As the commit to add it showed (and at least 10 other
commits to the kernel this weekend) lots of other code was affected, so
someone not applying a fix for a CVE mentioning only /dev/net/tun
because they don't have the code for /dev/net/tun compiled in, is going
to be missing out on a number of fixes).
-Brad
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