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Re: The GNU C library dynamic linker expands $ORIGIN in setuid library search path
From: Tavis Ormandy <taviso () cmpxchg8b com>
Date: Wed, 20 Oct 2010 13:19:31 +0200

Louis Granboulan <louis.granboulan.security () gmail com> wrote:
However, it is quite clear to me that the current behaviour is
inconsistent and is the reason of this security flaw. We see $ ls -l
/proc/self/fd/3 pretend that it is a symbolic link to a file that does not
exist, and $ ls -lL /proc/self/fd/3 show a setuid file.

Louis, the commands specified in the advisory were intended to help
illustrate the problem, not be a replacement for any analysis. Your
questions were anticipated, and answered in the Notes section.

Next time I will put the Notes section at the top ;-)


taviso () cmpxchg8b com | pgp encrypted mail preferred

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