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Mozilla / Firefox Three Vulnerabilities
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Secunia Advisory:
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SA14160
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Release Date:
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2005-02-08
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Last Update:
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2005-03-22
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Popularity:
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36,641 views
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Critical:
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Moderately critical
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Impact:
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Security Bypass
Cross Site Scripting
Manipulation of data
Exposure of sensitive information
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 0.x
Mozilla 1.0
Mozilla 1.1
Mozilla 1.2
Mozilla 1.3
Mozilla 1.4
Mozilla 1.5
Mozilla 1.6
Mozilla 1.7.x
Mozilla Firefox 0.x
Mozilla Firefox 1.x
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| CVE reference: | CVE-2005-0230
CVE-2005-0231
CVE-2005-0232
CVE-2005-0527
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Description:
mikx has discovered three vulnerabilities in Mozilla and Firefox, which can be exploited by malicious people to plant malware on a user's system, conduct cross-site scripting attacks, disclose sensitive information, bypass certain security restrictions and compromise a user's system.
1) Mozilla and Firefox validate an image against the "Content-Type" HTTP header, but uses the file extension from the URL when saving an image after a drag and drop event. This can e.g. be exploited to plant a valid image with an arbitrary file extension and embedded script code (e.g. .bat file) on the desktop by tricking a user into performing a certain drag and drop event.
2) Missing URI handler validation when dragging a "javascript:" URL to another tab can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an arbitrary site by tricking a user into dragging a malicious link to another tab.
3) An error in the restriction of URI handlers loaded via plugins can be exploited to link to certain restricted URIs (e.g. about:config).
This can further be exploited to trick a user into changing some sensitive configuration settings.
Exploit code has been published by mikx combining vulnerability 2 and 3, where a malicious website can execute arbitrary code when a user drags the scrollbar twice.
It is also possible to read arbitrary local files via a malicious Windows SMB share hosting specially crafted javascript code.
The vulnerabilities have been confirmed in Mozilla 1.7.5 and Firefox 1.0. Other versions may also be affected.
Solution:
Mozilla:
Update to version 1.7.6.
Mozilla Firefox:
Update to version 1.0.1.
Provided and/or discovered by:
Originally discovered by:
mikx
Further information provided by:
Jelmer Kuperus
Changelog:
2005-02-14: Added further information provided by Jelmer Kuperus.
2005-02-25: Mozilla Firefox 1.0.1 released. Updated "Solution" section. Added CVE reference.
2005-02-28: Added information about exploit code.
2005-03-22: Mozilla 1.7.6 released. Updated "Solution" section.
Original Advisory:
1) http://www.mikx.de/index.php?p=8
2) http://www.mikx.de/index.php?p=9
3) http://www.mikx.de/index.php?p=10
Other References:
1) https://bugzilla.mozilla.org/show_bug.cgi?id=279945
2) https://bugzilla.mozilla.org/show_bug.cgi?id=280056
3) https://bugzilla.mozilla.org/show_bug.cgi?id=280664
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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