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Mozilla Firefox Iframe Size Denial of Service Weakness
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Secunia Advisory:
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SA17071
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Release Date:
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2005-10-06
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Last Update:
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2006-02-17
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Popularity:
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30,392 views
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Critical:
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Not critical
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Impact:
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DoS
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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 1.x
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Subscribe:
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Instant alerts on relevant vulnerabilities 
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| | CVE reference: | CVE-2005-4720
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Description:
Tom Ferris has discovered a weakness in Firefox, which can be exploited by malicious people to cause a DoS (Denial of Service).
The weakness is caused due to an error in the handling of overly large size attributes in the "Iframe" tag. This can be exploited to crash a vulnerable browser via a specially crafted "Iframe" tag on a malicious web site.
The weakness has been confirmed in version 1.0.7 on Fedora Core 4 (Linux). Other versions and platforms may also be affected.
NOTE: The vendor has concluded that the weakness is caused due to an infinite recursion which causes a stack overflow, which only can be exploited to crash a vulnerable browser and cannot be exploited for code execution.
Solution:
Update to version 1.5.
http://www.mozilla.com/firefox/
Provided and/or discovered by:
Tom Ferris
Changelog:
2005-10-10: Added note in "Description" section, updated "Solution" section, and added link to bugzilla entry.
2005-12-02: Updated "Solution" section.
2006-02-17: Added CVE reference.
Original Advisory:
Tom Ferris:
http://security-protocols.com/modules...me=News&file=article&sid=2978
Mozilla:
https://bugzilla.mozilla.org/show_bug.cgi?id=303433
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About this Secunia Advisory
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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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