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Internet Explorer onUnload flaw CVE-2007-1091
A serious flaw in IE causes a denial of service attack (crash) or could allow remote access.
By Robert Vamosi (March 12, 2007)

QUICK FACTS
Name: Internet Explorer onUnload flaw CVE-2007-1091

Date first reported: 02/27/07

Vulnerable software: Internet Explorer, Version 7 and earlier

What it does: Causes a denial-of-service (crash) and can allow remote access.

Recommendations: None

Exploit code available: No

Vendor patch available: No
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7
out of 10
INTERNET THREAT RATING
How we rate
This flaw prevents users from leaving a site, and allows remote attackers to spoof the address bar, conduct phishing, and other attacks on vulnerabile systems. The flaw is within the onUnload Javascript handlers.

Additional Resources:

US-CERT: CVE-2007-1091
Frsirt: 0713
Secunia: 2304
Full Disclosure: 52630