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Home - Vulnerability NotesPrint
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CERT-In Vulnerability Note CIVN-2005-0049
Microsoft Windows HTML Help Remote Code Execution

Original Issue Date:June 15, 2005

Severity Rating: HIGH

Systems Affected

  • Microsoft Windows 2000 Advanced Server
  • Microsoft Windows 2000 Datacenter Server
  • Microsoft Windows 2000 Professional
  • Microsoft Windows 2000 Server
  • Microsoft Windows Server 2003 Datacenter Edition
  • Microsoft Windows Server 2003 Enterprise Edition
  • Microsoft Windows Server 2003 Standard Edition
  • Microsoft Windows Server 2003 Web Edition
  • Microsoft Windows XP Home Edition
  • Microsoft Windows XP Professional

Overview

A remote code execution vulnerability exists in Windows HTML Help which could allow an attacker to execute arbitrary commands on the affected system.

Description

Microsoft HTML Help is the standard help system for the Windows platform which is used to create online Help files for a software application or Website.



This vulnerability is caused due to an input validation error within HTML Help. To exploit this vulnerability an attacker could host a malicious webpage and convince the target user to click the malicious link, which allows an attacker to gain complete control of an affected system.

Workaround

Unregister HTML Help InfoTech Protocol

Click Start, click Run, type regsvr32 /u windir \system32\itss.dll, and then click OK.

Solution

Apply the appropriate patches as mentioned in Microsoft Security Bulletin MS05-026

Vendor Information

Microsoft Corporation
http://www.microsoft.com/technet/security/Bulletin/MS05-026.mspx

References

Vulnerability Note VU#851869
http://www.kb.cert.org/vuls/id/851869

Secunia Advisory SA15694
http://secunia.com/advisories/15683/

CVE Name
CAN-2005-1208

Disclaimer

The information provided herein is on "as is" basis, without warranty of any kind.

Contact Information

Email: info@cert-in.org.in
Phone: +91-11-2436857

Postal address

Indian Computer Emergency Response Team (CERT-In)
Ministry of Electronics and Information Technology
Government of India
Electronics Niketan
6, CGO Complex, Lodhi Road,
New Delhi - 110 003
India

 
Indian Computer Emergency Response Team - CERT-In, Ministry of Electronics and Information Technology, Government of India.
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