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Re: FreeBSD (and other BSDs?) local root explot


From: stas () SONET CRIMEA UA (Stas Kisel)
Date: Wed, 1 Sep 1999 12:05:01 +0400


From: Ollivier Robert <roberto () EUROCONTROL FR>
Subject:      Re: FreeBSD (and other BSDs?) local root explot

According to Todd C. Miller:
that one of the FreeBSD guys was recently working on incorporating
changes from the OpenBSD fts.c.  I don't see the relevant change in
FreeBSD-current though.
It has been committed to all three branches, 4.0-CURRENT, 3.2-STABLE and
even 2.2-STABLE.
  Log:
  Don't follow symlinks on coredumps and ktrace.

This does not fix the bug in fts.c.
I believe that this bug can be exploited to gain root privileges in other
way than overwriting files with a core.
I still have not exploit, so this is theoretical problem only.
But many people like "to make theoretical practical" :)

\bye
Stas


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