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1.9 KiB
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# Exploit Title: [Google Chrome Silent HTTP Authentication]
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# Date: [2-5-2013]
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# Exploit Author: [T355]
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# Vendor Homepage: [http://www.google.com/chrome]
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# Version: [24.0.1312.57]
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# Tested on: [Tested on: Windows 7 & Mac OSX Mountain Lion]
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# CVE : [n/a]
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VULNERABILITY DETAILS
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The latest version of Google Chrome (Tested on Version 24.0.1312.57)
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fails to properly recognize HTTP Basic Authentication when injected in
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various HTML tags. As a result of this behavior Chrome will not alert
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the user when HTTP Basic Authentication is taking place or when
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credentials are rejected. This behavior is particularly concerning
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with respect to small office and home routers. Such devices are easily
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brute forced using this method. Many of these devices have the default
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password enabled which brings me to part II of this bug. Silent HTTP
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Authentication allows the attacker to log into the router and change
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settings with no alerts and or warnings issued by Chrome. The end
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result allows an attacker to brute force the router login, connect to
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the router, enable remote administration and of course control all
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information on the entire network via DNS attacks etc.
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REPRODUCTION CASE
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I have attached the following files:
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sploit.txt - Indicates the buggy code.
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jquery.js - Used for real world scenario but not needed for bug.
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brute.js - Real world attack scenario for this bug.
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index.html - HTML Attack Page
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attack.php - Payload file for Linksys Routers.
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VERSION
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Chrome Version: [24.0.1312.57]
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Operating System: [Tested on: Windows 7 & Mac OSX Mountain Lion]
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CREDIT
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T355
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IMPACT
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The impact for this bug is enormous. Tens of millions of home routers
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can easily be completely compromised. Distributed brute force attacks
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can be performed on any HTTP Authentication portal.
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RECOMMENDATIONS
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Reference how Firefox and Safari handle the attached code.
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PoC: https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/24486.tar.gz |