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IT Security and Insecurity Portal |
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.doc vulnerabilities |
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 Posted: Fri Jan 25, 2008 9:47 pm |
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| agentsteal |
| Regular user |
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| Joined: Jun 09, 2007 |
| Posts: 5 |
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| I made a PHP script that dynamically creates Microsoft Word .doc files. Can inserting user input into a .doc file be exploited? Is there anything I need to filter? |
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Re: .doc vulnerabilities |
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| Posted: Fri Jan 25, 2008 10:15 pm |
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| waraxe |
| Site admin |
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| Joined: May 11, 2004 |
| Posts: 2407 |
| Location: Estonia, Tartu |
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| agentsteal wrote: | | I made a PHP script that dynamically creates Microsoft Word .doc files. Can inserting user input into a .doc file be exploited? Is there anything I need to filter? |
What is output? "Content-Disposition:attachment"-type forced download?
Or you will save temp files or final files in web-accessible directories?
What is input? Plaintext? |
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| Posted: Fri Jan 25, 2008 10:31 pm |
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| agentsteal |
| Regular user |
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| Joined: Jun 09, 2007 |
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| Quote: | | What is output? "Content-Disposition:attachment"-type forced download? |
Yes.
| Quote: | | What is input? Plaintext? |
It's the information from a registration form. |
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| Posted: Sat Jan 26, 2008 1:40 am |
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| waraxe |
| Site admin |
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| Joined: May 11, 2004 |
| Posts: 2407 |
| Location: Estonia, Tartu |
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Well, i don't see here any direct security issues. But it all depends of implementation. I mean - only attack vector, that I am able to consider right now, based on provided information, is expected user input from html form, delivered through POST request and then used for doc-file creation. This seems secure, if input data is plaintext.
But you must consider other attack vectors - local and remote file inclusions, remote code executions, variable poisoning (php issue),etc.
Without seeing source code there is no way to be sure ... |
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