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Firefox "firefoxurl" URI Handler Registration Vulnerability
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Secunia Advisory:
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SA25984
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Release Date:
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2007-07-10
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Last Update:
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2007-07-20
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Critical:
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Highly critical
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Impact:
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System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | Mozilla Firefox 2.0.x
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| | CVE reference: | CVE-2007-3670 (Secunia mirror)
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Description:
A vulnerability has been discovered in Firefox, which can be exploited by malicious people to compromise a user's system.
The problem is that Firefox registers the "firefoxurl://" URI handler and allows invoking firefox with arbitrary command line arguments. Using e.g. the "-chrome" parameter it is possible to execute arbitrary Javascript in chrome context. This can be exploited to execute arbitrary commands e.g. when a user visits a malicious web site using Microsoft Internet Explorer.
The vulnerability is confirmed in Firefox version 2.0.0.4 on a fully patched Windows XP SP2. Other versions may also be affected.
Do you have this product installed on your home computer? Scan using the free Personal Software Inspector. Check if a vulnerable version is installed on computers in your corporate network, using the Network Software Inspector.
Solution:
Update to version 2.0.0.5.
Provided and/or discovered by:
Billy (BK) Rios, Nate Mcfeters, and Raghav "the Pope" Dube
Additional information provided by Thor Larholm.
Independently discovered by Greg MacManus, iDefense Labs.
Changelog:
2007-07-10: Added workaround to the "Solution" section.
2007-07-11: Added CVE reference.
2007-07-12: Added link to US-CERT.
2007-07-18: Updated "Solution" section. Added link to vendor advisory.
2007-07-20: Added link to iDefense and updated credits section.
Original Advisory:
Mozilla:
http://www.mozilla.org/security/announce/2007/mfsa2007-23.html
http://www.xs-sniper.com/sniperscope/IE-Pwns-Firefox.html
http://larholm.com/2007/07/10/internet-explorer-0day-exploit/
iDefense:
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=565
Other References:
US-CERT VU#358017:
http://www.kb.cert.org/vuls/id/358017
Extended Solution:
The "Extended Solution" section is available for Secunia customers only. Request a trial and get access to the Secunia Customer Area and Extended Secunia advisories.
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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