bugtraq - Re: Buffer Overflow in ActivePerl?

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Message-ID: <20040518090339.GA15384@ecos.de>
Date: Tue, 18 May 2004 11:03:40 +0200
From: Axel Beckert <beckert@...s.de>
To: "Oliver@...yhat.de" <Oliver@...yhat.de>
Cc: full-disclosure@...ts.netsys.com, bugtraq@...urityfocus.com
Subject: Re: Buffer Overflow in ActivePerl?

Hi!

Am Mon, May 17, 2004 at 10:23:56PM +0200, Oliver@...yhat.de schrieb:
> i played around with ActiveState's ActivePerl for Win32, and crashed 
> Perl.exe with the following command:
> 
> perl -e "$a="A" x 256; system($a)"
> 
> I wonder if this bug isnt known?!? Because system() is a very common 
> command....
> Can anybody reproduce this?

I can confirm this for Perl v5.8.0 built for MSWin32-x86-multi-thread
(Binary build 805 provided by ActiveState Corp.) on W2K.

My first thought was that the nested double-quotes maybe the reason,
but even 

  perl -e "$a='A' x 256; system($a)"

crashes. 

  perl -e "system('A'x256)"

chrashes also btw.

            Kind regards, Axel Beckert
-- 
-------------------------------------------------------------
Axel Beckert      ecos electronic communication services gmbh
it security solutions * web applications with apache and perl

Mail:       Tulpenstrasse 5       D-55276 Dienheim near Mainz
E-Mail:     beckert@...s.de       Voice:     +49 6133 939-220
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