Simple way to crack Word password protection

When using Word to protect file protection, we often use formal protection, the most thorough use of form protection, users can't edit, and cannot perform Copy & Paste operations, the vulnerability of the Word document allows you to remove this password with very simple way. When using Word, we often use Formware (Tools -> Protection Documents), the most thorough use of form protection, users can't edit, and cannot perform Copy & Paste operation, the Word document released in the previous day You can let you remove this password with a very simple method. We will test it yourself: First create a Word document, protect the document, tool -> Protection document -> Check "only allow this editing in the document" -> choose ", this A password box will pop up, enter 2 passwords (I choose 123 as a Word file password), so that the document has been protected. Then we come to crack it, open the word document you just created, file -> Save as -> Select the HTML format, save the HTML document, open the HTML file with Notepad, search "", you will look To the word 5bcecf7a (if your password is used 123). Then we open the originally protected Word document with UltraEdit or other similar tools, search 7acfce5b, after search, use 8 0 instead, save. The password of the Word document at this time is cleared, you can cancel your document yourself, the password does not need to be entered, press a carriage return. MS has not provided patch on this vulnerability, I think it is possible to solve this problem in the short term. It is recommended that the document later is not protected with this thing.