Bug 85231

Summary:	net-www/mozilla-thunderbird: "Save Link Target As..." Status Bar Spoofing Weakness
Product:	Gentoo Security	Reporter:	Jean-François Brunette (RETIRED) <formula7>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	RESOLVED DUPLICATE
Severity:	normal
Priority:	High
Version:	unspecified
Hardware:	All
OS:	All
URL:	http://secunia.com/advisories/14567/
Whiteboard:
Package list:		Runtime testing required:	---

Description Jean-François Brunette (RETIRED) gentoo-dev

2005-03-14 09:14:08 UTC

Description:
bitlance winter has discovered a weakness in Thunderbird, which can be exploited by malicious people to trick users into saving malicious files by obfuscating URLs.

The status bar cannot be manipulated via script code in the default settings. However, it is still possible to display an incorrect URL in the status bar when hovering the mouse over a link, right clicking, and choosing "Save Link Target As...".

This can be exploited by including a nested link in a table inside a link.

Example:
<a href="[TRUSTED_URL]">
<table><tr><td>
<a href="[MALICIOUS_URL]">download
</a>
</td></tr></table>
</a>

The weakness has been confirmed in version 1.0. Other versions may also be affected.

Solution:
Never save files via untrusted sources.

Other References:
SA13015:
http://secunia.com/advisories/13015/

Comment 1 Thierry Carrez (RETIRED) gentoo-dev

2005-03-15 02:13:12 UTC

Regrouping, sorry for the noise...

*** This bug has been marked as a duplicate of 85229 ***