Vulnerability Note VU#960454
Microsoft Internet Explorer does not properly interpret IFRAME elements when displaying URLs in the status bar
Microsoft Internet Explorer does not properly display the location of HTML documents in the status bar. An attacker could exploit this behavior to mislead users into revealing sensitive information.
Web browsers frequently display the Uniform Resource Locator (URL) in the status bar when a user moves the cursor over links contained within the page. A vulnerability exists in the way Microsoft Internet Explorer interprets HTML to determine the correct URL to display in the browser's status bar.
The Hypertext Markup Language (HTML) supports the use of the IFRAME element. The IFRAME element is used to display an in-line frame that contains the contents of another document. For instance, assume that a web developer specifies the following tag in an HTML document:
If the web developer includes the IFRAME element within a web page, the contents of the URL specified in the src property of the IFRAME will be displayed inline with the document.
When Internet Explorer encounters an IFRAME element that is contained within an ANCHOR element (e.g., <a href="..."></a>), it will use the ANCHOR element's URL to display in the status bar, but access the URL specified in the IFRAME element when the user clicks on the link.
Note: Exploitation of this vulnerability does not require Active scripting to be enabled.
An attacker could mislead a user to into believing that the URL specified in the status bar is the site that will be accessed when the user clicks on the link. However, when the user clicks on the link they will visit a site different than the URL specified in the status bar and potentially controlled by the attacker. The attacker could use additional social engineering techniques to trick the victim into disclosing sensitive information such as credit card numbers, account numbers, and passwords.
We are currently unaware of a practical solution to this problem.
Install Windows XP Service Pack 2 (SP2)
Systems Affected (Learn More)
|Vendor||Status||Date Notified||Date Updated|
|Microsoft Corporation||Affected||-||04 Nov 2004|
|Apple Computer Inc.||Unknown||-||04 Nov 2004|
|KDE Desktop Environment Project||Unknown||-||04 Nov 2004|
|Mozilla||Unknown||-||04 Nov 2004|
|Opera Software||Unknown||-||04 Nov 2004|
CVSS Metrics (Learn More)
This vulnerability was reported by Benjamin Tobias Franz.
This document was written by Will Dormann and Damon Morda.
- CVE IDs: Unknown
- Date Public: 02 Nov 2004
- Date First Published: 04 Nov 2004
- Date Last Updated: 05 Nov 2004
- Severity Metric: 0.33
- Document Revision: 11
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