Microsoft Outlook Web Access for Exchange Server script injection vulnerability

Overview

A script injection vulnerability exists in Microsoft Exchange Server running Outlook Web Access.

Description

Microsoft Outlook Web Access (OWA) is a service of Exchange Server. OWA allows authorized users to read and send email, manage their calendar, and perform other functions on an Exchange server via the Web.

Outlook Web Access fails to correctly filter script contained in an email message under certain circumstances. This results in a vulnerability that could allow an attacker to supply script that would be executed by a user using OWA to read email.

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Impact

A remote attacker with the ability to supply an email message containing specially crafted script may be able to execute the script in the security context of the victim user on the client system. Microsoft states that user interaction is required to exploit this vulnerability.

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Solution

Apply a patch

Microsoft has published patches for this issue in Microsoft Security Bulletin MS06-029.

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Workarounds

In addition to the patches, Microsoft has also published a number of workarounds for this issue in Microsoft Security Bulletin MS06-029. Users, particularly those who are unable to apply the patch, are encouraged to implement these workarounds.

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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

Microsoft published Microsoft Security Bulletin MS06-029 in response to this issue. Users are encouraged to review this bulletin and apply the patches it refers to.

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23138188 Feedback>).

CVSS Metrics

Group	Score	Vector
Base
Temporal
Environmental

References

<http://www.microsoft.com/technet/security/bulletin/ms06-029.mspx&gt;

Acknowledgements

Thanks to Microsoft for reporting this vulnerability. Microsoft, in turn, credits Daniel Fabian of SEC Consult with reporting this issue to them.

This document was written by Chad R Dougherty.

Other Information

CVE IDs:	CVE-2006-1193
Severity Metric:	15.19 Date Public: