Another Exploit Targets IE7 Bug

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Another Exploit Targets IE7 Bug

Postby TeMerc » Tue Feb 17, 2009 10:48 am

by Jake Soriano (Technical Communications)

Cybercriminals are actively exploiting a critical vulnerability in Internet Explorer 7, which arises from the browser’s improper handling of errors when attempting to access deleted objects. This vulnerability allows remote attackers to execute arbitrary codes on a vulnerable machine.

The threat starts with a spammed malicious .DOC file detected as XML_DLOADR.A. This file has a very limited distribution script, suggesting it may be a targeted attack. It contains an ActiveX object that automatically accesses a site rigged with a malicious HTML detected by the Trend Micro Smart Protection Network as HTML_DLOADER.AS.

HTML_DLOADER.AS exploits the CVE-2009-0075 vulnerability, which is already addressed by the MS09-002 security patch released last week. On an unpatched system though, successful exploitation by HTML_DLOADER.AS downloads a backdoor detected as BKDR_AGENT.XZMS.

0-= Continued @ Trend Labs Malware Blog
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