Microsoft Windows HTML Help ActiveX buffer overflow

win-html-help-bo (10253) The risk level is classified as HighHigh Risk


Microsoft Windows is vulnerable to a buffer overflow in one of the HTML Help ActiveX control functions. By passing a malformed parameter to the affected HTML Help ActiveX control function, a remote attacker could overflow a buffer and execute commands on the system with the same privileges as the victim. An attacker could exploit this vulnerability by creating a malicious Web page that calls the affected HTML Help facility function using the ActiveX control, and hosting it on a Web site or sending it to a victim as an HTML email.


Gain Access


Apply the appropriate patch for your system, as listed in Microsoft Security Bulletin MS02-055. See References.


Platforms Affected:

  • Microsoft Windows 2000
  • Microsoft Windows 98
  • Microsoft Windows 98SE
  • Microsoft Windows Me
  • Microsoft Windows NT 4.0
  • Microsoft Windows NT 4.0 Terminal Server
  • Microsoft Windows XP


Oct 02, 2002

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email ignore thisxforceignore this@ignore thisus.ignore thisibm.comignore this

Return to the main page