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Category:   Application (E-mail Client)  >   Mozilla Thunderbird Vendors:   Mozilla.org
(Thunderbird is Affected) Mozilla Firefox Bug in Firefox URL Protocol Handler Lets Remote Users Execute Arbitrary Commands
SecurityTracker Alert ID:  1018417
SecurityTracker URL:  http://securitytracker.com/id/1018417
CVE Reference:   CVE-2007-3670, CVE-2007-3845, CVE-2007-4841   (Links to External Site)
Updated:  Aug 24 2007
Original Entry Date:  Jul 19 2007
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.0.0.7 and prior versions
Description:   A vulnerability was reported in Mozilla Firefox. A remote user can cause arbitrary code to be executed on the target user's system. Mozilla Thunderbird is affected.

The browser does not properly process the 'FirefoxURL' URL protocol. A remote user can create specially crafted HTML that, when loaded by the target user, will execute arbitrary shell commands with arbitrary arguments on the target system. The commands will run with the privileges of the target user.

Billy (BK) Rios, Nate Mcfeters, and Raghav "the Pope" Dube reported this vulnerability.

The original advisory is available at:

http://www.xs-sniper.com/sniperscope/IE-Pwns-Firefox.html

Thor Larholm originally reported this type of vulnerability as applied to Microsoft Internet Explorer:

http://larholm.com/2007/07/10/internet-explorer-0day-exploit/

[Editor's note: Some users dispute that Internet Explorer is at fault.]

Jesper Johansson and others reported that other URI protocol handlers (e.g., mailto, news, nntp, snews, and telnet) are also affected and still vulnerable in Firefox 2.0.0.5.

Firefox version 2.0.0.6 does not properly process %-encoded sequences.

Some demonstration exploit code is available at:

http://xs-sniper.com/blog/remote-command-exec-firefox-2005/

Impact:   A remote user can create HTML that, when loaded by the target user, will execute arbitrary code on the target user's system.
Solution:   The vendor has issued fixed versions (1.5.0.13, 2.0.0.6) of Mozilla Thunderbird, which is affected by this vulnerability.

The Mozilla advisory is available at:

http://www.mozilla.org/security/announce/2007/mfsa2007-27.html

The previous advisory is available at:

http://www.mozilla.org/security/announce/2007/mfsa2007-23.html

Vendor URL:  www.mozilla.org/security/announce/2007/mfsa2007-27.html (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry is a follow-up to the message listed below.
Jul 11 2007 Mozilla Firefox Bugs in URL Protocol Handlers Let Remote Users Execute Arbitrary Commands



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