Full Disclosure: Yahoo Toolbar YShortcut.dll IsTaggedBM() Buffer Overflow

[Elazar Broad <elazarb () earthlink net>]

YShortcut is a feature of the Yahoo toolbar which allows you to map shortcuts to URLS, i.e. y = http://www.yahoo.com 
and bla = http://www.somesite.com. The IsTaggedBM function is called every time anything is typed into the browsers 
address bar. This function suffers from an exploitable buffer overflow if 3000 characters is passed to it. Instead of 
doing their own bounds checking, Yahoo relies on the 2083 maximum URL length for Internet Explorer. This object is NOT 
marked safe for scripting.

YShortcut.dll, version 2006.8.15.1 
{67CE97C5-ABE6-429A-B6BD-3BD1333A0825}

Elazar

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