Mozilla Firefox Bugs in URL Protocol Handlers Let Remote Users Execute Arbitrary Commands
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SecurityTracker Alert ID: 1018360
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SecurityTracker URL: http://securitytracker.com/id?1018360
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CVE Reference: CVE-2007-3670
, CVE-2007-3845
, CVE-2007-4841
(Links to External Site)
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Updated: Oct 19 2007
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Original Entry Date: Jul 11 2007
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Impact: Execution of arbitrary code via network, User access via network
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Fix Available: Yes
Exploit Included: Yes
Vendor Confirmed: Yes
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Version(s): 2.0.0.7 and prior versions
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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/
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Impact: A remote user can create HTML that, when loaded by the target user, will execute arbitrary code on the target user's system.
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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/mfsa
2007-23.html
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Vendor URL: www.mozilla.org/security/announce/2007/mfsa2007-27.html (Links to External Site)
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Cause: Input validation error
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Underlying OS: Linux (Any), UNIX (Any), Windows (Any)
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Message History:
This archive entry has one or more follow-up message(s) listed below.
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Source Message Contents
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Date: Tue, 10 Jul 2007 23:27:57 -0400
Subject: Mozilla Firefox
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http://www.xs-sniper.com/sniperscope/IE-Pwns-Firefox.html
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