A vulnerability has been reported in Microsoft Windows, which can be exploited by malicious people to compromise a user's system.
The vulnerability is caused due to an input validation error within HTML Help and can be exploited through a malicious HTML document.
OPERATING SYSTEM:
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
SOLUTION:
Apply patches.
Microsoft Windows 2000 (requires Service Pack 3 or Service Pack 4):
http://www.microsoft.com/downloads/details.aspx?FamilyId=9AF346AE-4807-42F4-95E2-8F5FAE321102
Microsoft Windows XP (requires Service Pack 1 or Service Pack 2):
http://www.microsoft.com/downloads/details.aspx?FamilyId=17833B94-AF70-47BD-872C-033A3F0E982A
Microsoft Windows XP 64-Bit Edition (requires Service Pack 1)
(Itanium):
http://www.microsoft.com/downloads/details.aspx?FamilyId=A6A807F2-AD02-4D15-A198-CF8A728B3A25
Microsoft Windows XP 64-Bit Edition Version 2003 (Itanium):
http://www.microsoft.com/downloads/details.aspx?FamilyId=EE8BA26D-CFDA-428F-9F9B-16908DB88C80
Microsoft Windows XP Professional x64 Edition:
http://www.microsoft.com/downloads/details.aspx?FamilyId=CE81AE3B-4FA4-4576-8539-AB49E575A98F
Microsoft Windows Server 2003 (with or without Service Pack 1):
http://www.microsoft.com/downloads/details.aspx?FamilyId=A19EEE21-7DF2-4B95-A4C5-44C6CAA5AF9A
Microsoft Windows Server 2003 (with or without Service Pack 1)
(Itanium):
http://www.microsoft.com/downloads/details.aspx?FamilyId=A19EEE21-7DF2-4B95-A4C5-44C6CAA5AF9A
Microsoft Windows Server 2003 x64 Edition:
http://www.microsoft.com/downloads/details.aspx?FamilyId=2E8716F7-3A81-4482-8C92-2A2DC3C2F782
PROVIDED AND/OR DISCOVERED BY:
The vulnerability was reported independently by:
* Peter Winter-Smith of Next Generation Security Software.
* eEye Digital Security.
ORIGINAL ADVISORY:
MS05-026 (KB896358):
http://www.microsoft.com/technet/security/Bulletin/MS05-026.mspx
VERIFY ADVISORY:
http://secunia.com/advisories/15683/
Secunia Security Advisories
http://community.securityteam.us/article.php/20050615073120262