Other nomination

Additional Image Bypass on Windows

Michael Schramm's finding, relayed by ha.ckers.org: NTFS alternate data streams let a filename carry "::$DATA", which Windows strips when the file is written. Appending it to "foobar.php" slipped past FCKeditor's denied-extension blacklist and landed on disk as foobar.php. It works on any Windows web server on NTFS, not only IIS.

In the archive

• Nominated for the 2007 Top 10 Web Hacking Techniques

Tags

• file-upload
• filter-bypass
• php
• parser-differential
• abuse-of-functionality
• owasp-a04-2021
• owasp-a05-2021

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