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Date: Mon, 25 Oct 2010 07:26:02 +0400
From: Solar Designer <>
Subject: Re: glibc $ORIGIN problem - CVE-2010-3847


This was discussed off-list before, but just to have it more widely
known/available - distros are welcome to reuse our sanitize-env patch
from Owl:

or perhaps a revision of it forward-ported to current glibc in ALT's
package.  Here's a relevant commit:;a=commitdiff;h=64963eb224c9

Perhaps further changes were made to some of the patched files in
Dmitry's repository above (the commit is a bit dated, whereas the
current tree is based on glibc 2.11.2).  Dmitry, you could want to
comment on that.

These changes, being a result of exhaustive review of glibc for env var
uses, might also provide further inspiration for more attacks on glibc
(without our patch).


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