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Message-ID: <542A0F1F.5050503@case.edu>
Date: Mon, 29 Sep 2014 22:02:07 -0400
From: Chet Ramey <chet.ramey@...e.edu>
To: "Kobrin, Eric" <ekobrin@...mai.com>,
"oss-security@...ts.openwall.com" <oss-security@...ts.openwall.com>
CC: chet.ramey@...e.edu
Subject: Re: Re: CVE-2014-6271: remote code execution through
bash (3rd vulnerability)
On 9/29/14, 11:42 AM, Kobrin, Eric wrote:
> On Sep 29, 2014, at 10:33 AM, Chet Ramey <chet.ramey@...e.edu> wrote:
>> If that is the command you ran, this doesn't show any vulnerability.
>
> I've seen quite a few examples like this which don't do precisely what the submitter thought.
>
> I hope this isn't another such example:
>
> $ env $'BASH_FUNC_\nfoo%%=() { echo 123\n }' ./bash -c 'foo'
> ./bash: error importing function definition for `
> foo'
> 123
>
> This doesn't seem like desired behavior.
It's not desired behavior, but it's not exactly a security problem either.
I have a fix.
Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU chet@...e.edu http://cnswww.cns.cwru.edu/~chet/
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