Microsoft 'HeartbeatCtl' ActiveX Control Remote Buffer Overflow Vulnerability

Bugtraq ID:	28882
Class:	Boundary Condition Error
CVE:	CVE-2007-6255
Remote:	Yes
Local:	No
Published:	Apr 21 2008 12:00AM
Updated:	Apr 22 2008 06:57PM
Credit:	Will Dormann of CERT/CC
Vulnerable:	Microsoft HeartbeatCtl ActiveX Control 0
Not Vulnerable:

Microsoft 'HeartbeatCtl' ActiveX Control Remote Buffer Overflow Vulnerability

Microsoft 'HeartbeatCtl' ActiveX control is prone to a remote buffer-overflow vulnerability.

Remote attackers can exploit this issue to execute arbitrary code in the context of the application using the ActiveX control (typically Internet Explorer). Successful exploits will compromise the application and possibly the underlying computer. Failed attacks will cause denial-of-service conditions.

Microsoft 'HeartbeatCtl' ActiveX Control Remote Buffer Overflow Vulnerability

Currently we are not aware of any working exploits. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

Microsoft 'HeartbeatCtl' ActiveX Control Remote Buffer Overflow Vulnerability

Solution:
Microsoft released advisory MS07-069 to address this issue by setting the kill bit for the affected CLSID. Please see the references for more information.

Microsoft 'HeartbeatCtl' ActiveX Control Remote Buffer Overflow Vulnerability

References:

• Microsoft Homepage (Microsoft)
  
• Microsoft Knowledge Base Article 240797 (Microsoft)
  
• Vulnerability Note VU#570089 (US-CERT)
  
• MS Security Bulletin MS07-069 (Microsoft)