[GLLUG] Bash Bug

James Roberts j.roberts at stabilys.com
Thu Sep 25 16:52:53 UTC 2014


On 25/09/14 16:54, Iain M Conochie wrote:

> Sorry mate, but this is a bash bug, and is not confined only to RHEL /
> CentOS:
>
>
>  >$ env x='() { :;}; \
> echo vulnerable'  bash -c "echo this is a test"
> vulnerable
> this is a test
>  >$ cat /etc/debian_version
> 6.0.10
>  >$ bash --version
> GNU bash, version 4.1.5(1)-release (i486-pc-linux-gnu)
> Copyright (C) 2009 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later
> <http://gnu.org/licenses/gpl.html>

I don't get that result on our Debian 7 instances pre-patch (perhaps due 
to our config?)

# env X="() { :;} ; echo busted" /bin/sh -c "echo completed"
completed

It's better after the patch though.

All the CentOS failed.
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