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Date: Tue, 18 May 2004 11:38:29 -0700 From: "Petter O. Bruland" <pbruland@...r.com> To: "Bill Royds" <full-disclosure@...ds.net>, <Oliver@...yhat.de> Cc: <full-disclosure@...ts.netsys.com>, <bugtraq@...urityfocus.com> Subject: RE: Re: Buffer Overflow in ActivePerl ? Seems to be working fine in version 5.8.1. No errors or crash on my system (Win2K all patches - that 04011 -patch) P:\>perl -v This is perl, v5.8.1 built for MSWin32-x86-multi-thread (with 1 registered patch, see perl -V for more detail) Copyright 1987-2003, Larry Wall Binary build 807 provided by ActiveState Corp. http://www.ActiveState.com ActiveState is a division of Sophos. Built 18:19:11 Nov 3 2003 Perl may be copied only under the terms of either the Artistic License or the GNU General Public License, which may be found in the Perl 5 source kit. Complete documentation for Perl, including FAQ lists, should be found on this system using `man perl' or `perldoc perl'. If you have access to the Internet, point your browser at http://www.perl.com/, the Perl Home Page. P:\>perl -e "$a="A" x 256; system($a)" P:\> Petter O. Bruland Network Tech @ KKBR, Las Vegas. -----Original Message----- From: Bill Royds [mailto:full-disclosure@...ds.net] Sent: Tuesday, May 18, 2004 4:23 AM To: Oliver@...yhat.de Cc: full-disclosure@...ts.netsys.com; bugtraq@...urityfocus.com Subject: RE: [Full-Disclosure] Re: Buffer Overflow in ActivePerl ? C:\Documents and Settings\Bill>Perl -v This is perl, v5.8.0 built for MSWin32-x86-multi-thread (with 1 registered patch, see perl -V for more detail) Copyright 1987-2002, Larry Wall Binary build 802 provided by ActiveState Corp. http://www.ActiveState.com Built 00:54:02 Nov 8 2002 Perl may be copied only under the terms of either the Artistic License or the GNU General Public License, which may be found in the Perl 5 source kit. Complete documentation for Perl, including FAQ lists, should be found on this system using `man perl' or `perldoc perl'. If you have access to the Internet, point your browser at http://www.perl.com/, the Perl Home Page. C:\Documents and Settings\Bill>perl -e "$a="A" x 256; system($a)" ===========crashes with instruction at ox78f... Referenced memory at 0x41414141 so it is a stqack overflow. Haven't tried to exploit it yet. -----Original Message----- From: full-disclosure-admin@...ts.netsys.com [mailto:full-disclosure-admin@...ts.netsys.com] On Behalf Of rich.sf@...ogic.com Sent: May 17, 2004 8:59 PM To: Oliver@...yhat.de Cc: full-disclosure@...ts.netsys.com; bugtraq@...urityfocus.com Subject: [Full-Disclosure] Re: Buffer Overflow in ActivePerl ? Reproduced with 5.6.1/win95. On Mon, 17 May 2004, Oliver@...yhat.de wrote: > Date: Mon, 17 May 2004 22:23:56 +0200 > From: "Oliver@...yhat.de" <Oliver@...yhat.de> > To: full-disclosure@...ts.netsys.com > Cc: bugtraq@...urityfocus.com > Subject: Buffer Overflow in ActivePerl ? > > hi folks, > > 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 put together a little advisory on my website, including version > information and a debugger output (Drwatson): > > http://www.oliverkarow.de/research/ActivePerlSystemBOF.txt > > > PS: Due to travel activity, i will not be able to respond to mails > within the next 8 days! > > Regards, > > Oliver > _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
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