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A comment on Remote Kernel Code Execution Via HTTP Request In IIS On Windows. Parent comment

Re:Remote Kernel Code Execution Via HTTP Request In IIS On W... by Khao on Wednesday April 15, 2015 @02:54PM (#9383251)
Seems like you can't add a system.webServer node on the machine.config, but you could add it to applicationHost.config (source: http://www.iis.net/learn/get-started/planning-your-iis-archi... ) so yes, that would be faster. You have to make sure that none of your web.config files override that setting though!
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Re:Remote Kernel Code Execution Via HTTP Request In IIS On W... by JonBons on Wednesday April 15, 2015 @04:19PM (#9383794)
I believe IIS supports locking attributes (source: http://www.iis.net/learn/get-started/planning-for-security/h...) so you should be able to lock at applicationHost.config and restrict further modifications. (I'm testing this now)

EDIT:

It causes a config error when a lock violation occurs which means the site gets an error 500 so its not an ideal fix.

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