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Date: Thu, 2 Sep 2010 19:17:59 +0200
From: Tomas Hoger <>
Subject: Re: CVE id request: libc fortify source information

On Thu, 2 Sep 2010 12:23:23 -0400 Dan Rosenberg wrote:

> > It seems the fix would need to remove all possibly-useful info from
> > the error message.
> The backtrace or memory map don't really contain any potentially
> sensitive information that couldn't be obtained otherwise.  It's just
> the reference to argv[0] (in glibc/debug/fortify_fail.c) that worries
> me, because this can be directly influenced to cause a printout of
> process memory.

In case of stack protector failed check, it's still an attempt to
print-out info based on what's known to be (partially) corrupted.

Tomas Hoger / Red Hat Security Response Team

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