Re: CVE-2014-6271: remote code execution through bash

[Anthony Liguori <anthony () codemonkey ws>]

On Wed, Sep 24, 2014 at 6:23 PM, Chet Ramey <chet.ramey () case edu> wrote:
> On 9/24/14, 5:32 PM, Solar Designer wrote:
> > On Wed, Sep 24, 2014 at 11:27:09PM +0200, Hanno B??ck wrote:
> > > Tavis Ormandy just tweetet this:
> > > https://twitter.com/taviso/status/514887394294652929
> > >
> > > The bash patch seems incomplete to me, function parsing is still
> > > brittle. e.g. $ env X='() { (a)=>\' sh -c "echo date"; cat echo
> >
> > Thanks for bringing this to oss-security.  I've added CC to Chet and
> > Tavis on this "reply".
>
> I have a fix for this.

Can you provide a pointer to the patch?  I put together a patch that
changed the report_error() to fatal_error() as I wasn't able to see
how to reset the parser state.  Was just about to send it out...

> Chet
> --
> ``The lyf so short, the craft so long to lerne.'' - Chaucer
>                  ``Ars longa, vita brevis'' - Hippocrates
> Chet Ramey, ITS, CWRU    chet () case edu    http://cnswww.cns.cwru.edu/~chet/