[VulnWatch] MSN Heartbeat Control Buffer Overflow
From: NGSSoftware Insight Security Research (nisr_at_nextgenss.com)
To: <firstname.lastname@example.org>, <email@example.com>, <firstname.lastname@example.org> Date: Wed, 19 Jan 2005 16:54:46 -0000
NGSSoftware Insight Security Research Advisory
Name: MSN Heartbeat Control Buffer Overflow
Systems Affected: Microsoft Internet Explorer with the MSN Heartbeat Control
Vendor URL: http://zone.msn.com/
Author: John Heasman [ email@example.com ]
Date of Public Advisory: 19th January 2004
Advisory number: #NISR19012005d
Advisory URL: http://www.ngssoftware.com/advisories/heartbeatfull.txt
A vulnerability has been discovered in the MSN Heartbeat ActiveX component
which can allow remote code execution through Internet Explorer.
This component is installed by some MSN gaming sites and is marked safe
for scripting by default.
When initialising the Heartbeat control in a webpage, there are several
parameters which must be set to access the functionality within the
control, such as urls and filenames. When providing an overly string for
the SetupData parameter, a heap based buffer overflow occurs. A reliable
arbitrary dword overwrite is possible, and it is trivial to exploit this
Microsoft have released an update for the MSN Heartbeat component which
addresses this issue.
This can be downloaded from:
A check for this vulnerability has been added to Typhon III, NGSSoftware's
advanced vulnerability assessment scanner. For more information please
visit the NGSSoftware website at http://www.ngssoftware.com/
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