Vulnerability Note VU#334928

Microsoft Internet Explorer contains buffer overflow in Type attribute of OBJECT element on double-byte character set systems

Overview

Certain versions of Microsoft Internet Explorer (IE) that support double-byte character sets (DBCS) contain a buffer overflow vulnerability in the Type attribute of the OBJECT element. A remote attacker could execute arbitrary code with the privileges of the user running IE.

I. Description

Microsoft Security Bulletin MS03-032 and SNS Advisory No.68 describe a buffer overflow vulnerability in the Type attribute of the OBJECT element. This vulnerability only affects double-byte character set versions of IE (e.g. Japanese) and may be related to VU#679556/CAN-2003-0344/MS030-020.

II. Impact

By convincing a victim to view an HTML document (web site, HTML email message), a remote attacker could execute arbitrary code with the privileges of the victim.

III. Solution

Apply patch

Apply 822925 or a more recent cumulative patch for IE. See Microsoft Security Bulletin MS03-032.

Systems Affected

Vendor	Status	Date Updated
Microsoft Corporation	Vulnerable	25-Aug-2003

References

http://www.lac.co.jp/security/english/snsadv_e/68_e.html
http://www.microsoft.com/technet/security/bulletin/MS03-032.asp
http://msdn.microsoft.com/workshop/author/dhtml/reference/objects/object.asp
http://xforce.iss.net/xforce/xfdb/12970
http://www.securityfocus.com/bid/7806

Credit

Microsoft credits LAC/SNS for reporting this vulnerability. Information used in this document came from LAC/SNS and Microsoft.

This document was written by Art Manion.

Other Information

Date Public	08/20/2003
Date First Published	08/26/2003 12:49:49 AM
Date Last Updated	08/11/2005
CERT Advisory	CA-2003-22
CVE Name	CAN-2003-0701
US-CERT Technical Alerts
Metric	7.09
Document Revision	16

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