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Category:   Application (Web Browser)  >   Mozilla Firefox Vendors:   Mozilla.org
Mozilla Firefox Bugs in URL Protocol Handlers Let Remote Users Execute Arbitrary Commands
SecurityTracker Alert ID:  1018360
SecurityTracker URL:  http://securitytracker.com/id/1018360
CVE Reference:   CVE-2007-3670, CVE-2007-3845, CVE-2007-4841   (Links to External Site)
Updated:  Oct 19 2007
Original Entry Date:  Jul 11 2007
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  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.

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 issued a fixed version (2.0.0.8).

The Mozilla advisory is available at:

http://www.mozilla.org/security/announce/2007/mfsa2007-36.html

The vendor previously issued version 2.0.0.6 to address flaws in some protocol handlers, but that version did not address flaws in processing %-encoded sequences. The previous Mozilla advisory is available at:

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

The vendor previously issued version 2.0.0.5 to address some of the 'Firefox URI' flaws, but that version did not address flaws in other URI protocol handlers (e.g., mailto, news, nntp, snews, and telnet). The previous Mozilla 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 has one or more follow-up message(s) listed below.
Jul 19 2007 (Thunderbird is Affected) Mozilla Firefox Bug in Firefox URL Protocol Handler Lets Remote Users Execute Arbitrary Commands
Mozilla Thunderbird is affected. The vendor has issued a fix.
Jul 19 2007 (Red Hat Issues Fix for Thunderbird) Mozilla Firefox Bug in Firefox URL Protocol Handler Lets Remote Users Execute Arbitrary Commands   (bugzilla@redhat.com)
Red Hat has released a fix for Thunderbird on Red Hat Enterprise Linux 4 and 5.
Jul 31 2007 (Seamonkey is Affected) Mozilla Firefox Bugs in URL Protocol Handlers Let Remote Users Execute Arbitrary Commands
Mozilla Seamonkey is affected.



 Source Message Contents

Date:  Tue, 10 Jul 2007 23:27:57 -0400
Subject:  Mozilla Firefox


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

 
 


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