Microsoft JScript memory corruption vulnerability

Overview

Microsoft JScript contains a memory corruption vulnerability. This vulnerability may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.

Description

Microsoft JScript

According to Microsoft Security Bulletin MS06-023:

_JScript is the Microsoft implementation of the ECMA 262 language specification (ECMAScript Edition 3). JScript is an interpreted, object-based scripting language. For more information see the product documentation. _
The Problem

Microsoft JScript fails to properly release objects allowing in a memory corruption vulnerability to occur. When a specially crafted JScript file, or specially crafted web page containing JScript is accessed, system memory can be corrupted in a way that could allow a remote attacker to execute arbitrary code.

Considerations

For more information refer to Microsoft Security Bulletin MS06-023

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Impact

A remote, unauthenticated attacker may be able to execute arbitrary code. If the attacked user is running with administrative privileges, the attacker could take complete control of an affected system.

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Solution

Apply a patch from Microsoft

Microsoft addresses this vulnerability with the updates listed in Microsoft Security Bulletin MS06-023.

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Disable Active Scripting

For instructions on how to disable Active Scripting in Microsoft Internet Explorer, please refer to the Internet Explorer section of the Securing Your Web Browser document.

A complete list of workarounds is available in Microsoft Security Bulletin MS06-023.

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Vendor Information

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Updated: June 13, 2006

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

Refer to <http://www.microsoft.com/technet/security/Bulletin/MS06-023.mspx&gt;.

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23390044 Feedback>).

CVSS Metrics

Group	Score	Vector
Base
Temporal
Environmental

References

• <http://www.microsoft.com/technet/security/bulletin/ms06-023.mspx&gt;
• <http://msdn.microsoft.com/library/default.asp?url=/library/en-us/script56/html/js56jsoriJScript.asp&gt;

Acknowledgements

This vulnerability was reported in Microsoft Security Bulletin MS06-023.

This document was written by Jeff Gennari.

Other Information

CVE IDs:	CVE-2006-1313
Severity Metric:	37.94 Date Public: