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@xxxxxxxxxxxxxxxx [mailto:full-disclosure-admin@xxxxxxxxxxxxxxxx] On Behalf Of rich.sf@xxxxxxxxxxx Sent: May 17, 2004 8:59 PM To: Oliver@xxxxxxxxxx Cc: full-disclosure@xxxxxxxxxxxxxxxx; bugtraq@xxxxxxxxxxxxxxxxx Subject: [Full-Disclosure] Re: Buffer Overflow in ActivePerl ? Reproduced with 5.6.1/win95. On Mon, 17 May 2004, Oliver@xxxxxxxxxx wrote: > Date: Mon, 17 May 2004 22:23:56 +0200 > From: "Oliver@xxxxxxxxxx" <Oliver@xxxxxxxxxx> > To: full-disclosure@xxxxxxxxxxxxxxxx > Cc: bugtraq@xxxxxxxxxxxxxxxxx > 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
