17305 : Microsoft Windows HTML Help (CHM) File Overflow
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Info

Last Modified

10 months ago

Percent Complete

100%

Disclosure

Jun 14, 2005

Discovery

Mar 16, 2005

Dates

Exploit

Unknown

Solution

Unknown

Description

A remote overflow exists in Microsoft Windows via the "ms-its" protocol specification. Microsoft Windows fails to check the size field resulting in a heap overflow. Specifying a very high value will cause a buffer overflow. With a specially crafted request, an attacker can cause Internet Explorer to open a malicious .CHM file and cause an excessive memory copy that overwrites portions of memory resulting in a loss of availability and possibly remote code execution.

Classification

Location: Remote/Network Access Required
Attack Type: Input Manipulation
Impact: Loss of Confidentiality, Loss of Integrity
Exploit: Exploit Rumored / Private
Disclosure: OSVDB Verified

Solution

Currently, there are no known workarounds or upgrades to correct this issue. However, Microsoft has released a patch (MS05-026) to address this vulnerability.

Products

Microsoft Corporation
Watch-list
Windows
Watch-list
98
98 SE
ME
2000
XP
2003

References

Tools & Filters

Nessus

18482

Snort

3820 3821 4183 7441

Credit

  • eEye Digital Security - infoBrand New Doo Dooeeye.com - eEye Digital Security

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