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Message-ID: <CALx_OUDxmuso3cVpcM9dUKobjQxiZFLC72d0py_4xbPuccsTuQ@mail.gmail.com>
Date: Thu, 25 Sep 2014 12:53:35 -0700
From: Michal Zalewski <lcamtuf@...edump.cx>
To: oss-security@...ts.openwall.com
Cc: Tavis Ormandy <taviso@...gle.com>, Chester Ramey <chet.ramey@...e.edu>,
Solar Designer <solar@...nwall.com>
Subject: Re: CVE-2014-6271: remote code execution through bash
> Yeah, that general approach is probably the best. I was just wondering.
> I don't really see the need to use a prefix and a suffix, though.
Prefix is definitely more valuable, because specific prefixes are
enforced by Apache and its ilk, but the suffix for the HTTP header ->
shell variable propagation is within attacker's control.
/mz
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