Fortinet Global Security Research Team Discovers An Arbitrary File Rewrite Vulnerability Affecting Microsoft Internet Explorer.

Summary:

A Remote Vulnerability exists in Internet Explorer which could allow an attacker to rewrite an arbitrary file on an affected system.

Risk:

  • Critical

Affected Software:

  • Microsoft Windows 2000 Service Pack 4
  • Microsoft Windows XP Service Pack 2
  • Microsoft Windows XP Professional x64 Edition and Windows XP Professional x64 Edition Service Pack 2
  • Microsoft Windows Server 2003 Service Pack 1 and Microsoft Windows Server 2003 Service Pack 2
  • Microsoft Windows Server 2003 with SP1 for Itanium-based Systems and Microsoft Windows Server 2003 with SP2 for Itanium-based Systems
  • Microsoft Windows Server 2003 x64 Edition Service Pack 1 and Microsoft Windows Server 2003 x64 Edition Service Pack 2
  • Windows Vista
  • Windows Vista x64 Edition

Additional Information:

A remote attacker could compromise a web site or host a malicious web page that is used to exploit this vulnerability. When a user is enticed to view the page through links from webpages, emails, or instant messages and they have the vulnerable media service component ( mdsauth.dll ), an arbitrary pre-existing file can be rewritten. This can lead remote code execution and allow full control of the affected system.

This vulnerability is due to improper sanitization of remotely supplied data.

Solution:

  • Install updates provided by Microsoft included in (MS07-027)

Credits:

  • Fortinet Global Security Research Team

References: