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[Full-disclosure] Yahoo Toolbar YShortcut.dll IsTaggedBM() Buffer Overflow
- To: "full-disclosure@xxxxxxxxxxxxxxxxx" <full-disclosure@xxxxxxxxxxxxxxxxx>
- Subject: [Full-disclosure] Yahoo Toolbar YShortcut.dll IsTaggedBM() Buffer Overflow
- From: Elazar Broad <elazarb@xxxxxxxxxxxxx>
- Date: Wed, 19 Dec 2007 10:56:28 -0500 (EST)
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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