Microsoft embedded web font buffer overflow

Overview

A heap-based buffer overflow in the way Microsoft Windows processes embedded web fonts may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.

Description

Microsoft Windows contains a heap-based buffer overflow in a routine that processes embedded web fonts. The overflow exists due to a lack of validation on compressed embedded web fonts. A remote attacker may be able to trigger the buffer overflow by persuading a user to access a web page or HTML email containing a specially crafted embedded web font.

For more information about affected versions of Microsoft Windows, please refer to MS06-002.

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Impact

A remote attacker may be able to execute arbitrary code with the privileges of the attacked user account.

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Solution

Apply an update
Microsoft Security Bulletin MS06-002 contains an update to correct this vulnerability.

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In addition Microsoft suggests the following workarounds to mitigate this vulnerability:

* Read and send email in plain text format
* Configure Font Download to “Prompt or Disable” in the Internet and Local Intranet Zones. 

Please see Microsoft Security Bulletin MS06-002 for details on these workarounds.

Vendor Information

915930

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Updated: January 10, 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

Please see <http://www.microsoft.com/technet/security/bulletin/ms06-002.mspx&gt;

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23915930 Feedback>).

CVSS Metrics

Group	Score	Vector
Base
Temporal
Environmental

References

• <http://www.microsoft.com/technet/security/bulletin/ms06-002.mspx&gt;
• <http://www.microsoft.com/typography/web/embedding/&gt;

Acknowledgements

This vulnerability was reported in Microsoft Security Bulletin MS06-002. Microsoft credits eEye Digital Security with providing information regarding this issue.

This document was written by Jeff Gennari.

Other Information

CVE IDs:	CVE-2006-0010
Severity Metric:	10.69 Date Public: