oss-sec mailing list archives

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


From: "Larry W. Cashdollar" <larry0 () me com>
Date: Thu, 25 Sep 2014 11:53:41 -0400

Hello List,

A colleague of mine added an ifdef for FUNCTION_EXPORT, his modifications can be found here: 

https://github.com/akamai/bash/commit/7caac6ee41f645fc21b6e5eddc820151f6e6c43c

Thank you.
— Larry C$

On Sep 24, 2014, at 9:30 PM, Solar Designer <solar () openwall com> wrote:

On Wed, Sep 24, 2014 at 06:26:53PM -0700, Anthony Liguori wrote:
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...

I think Chet is not on oss-security - we should be CC'ing him where
appropriate.  (I've added the CC on this reply.)

Alexander


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