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Single RCE Vulnerability that affects Microsoft, Yahoo and Orange

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Ebrahim Hegazy, a Bug Bounty Hunter from Egypt, has identified a security vulnerability that allowed him to hack Microsoft, Yahoo and Orange.

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While he is on the hunt for a security bug in Yahoo domains, he found a web page that allowed him to upload .aspx file and modify the existing aspx files.

You can just create a new file by sending POST request to the URL " http://mx.horoscopo.yahoo.net/ymx/editor/inc/GenerateFile.aspx" with the following post content: "FileName=New_File_Name.aspx&FileContent=File_Content_Here".

Ebrahim has simply uploaded a file called 'zigoo.aspx' with 'zigoo' as content. To find out other Yahoo domains that were affected by the same vulnerability, researcher did a Bing search.

More: Single RCE Vulnerability that affects Microsoft, Yahoo and Orange - E Hacker News

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