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CVE-2012-1858

Status Candidate

Overview

The toStaticHTML API (aka the SafeHTML component) in Microsoft Internet Explorer 8 and 9, Communicator 2007 R2, and Lync 2010 and 2010 Attendee does not properly handle event attributes and script, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted HTML document, aka "HTML Sanitization Vulnerability."

Related Files

toStaticHTML HTML Sanitizing Bypass
Posted Jul 11, 2012
Authored by Adi Cohen | Site blog.watchfire.com

The *toStaticHTML* component, which is found in Internet Explorer versions greater than 8, SharePoint and Lync is used to sanitize HTML fragments from dynamic and potentially malicious content. An attacker is able to create a specially formed CSS that will overcome * toStaticHTML*'s security logic; therefore, after passing the specially crafted CSS string through the *toStaticHTML* function, it will contain an expression that triggers a JavaScript call.

tags | exploit, javascript, xss
advisories | CVE-2012-1858
SHA-256 | 250fdc51b42fbad45e46c18cf75919ff7aaf7e27a4da2764383c71b6233a3cdb
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