Whitepaper explaining how PHPInfo can be used to assist with the exploitation of LFI vulnerabilities on PHP when combined with the file. [WEB SECURITY] Insomnia: Whitepaper – LFI With PHPInfo Assistance. MustLive mustlive at Fri Sep 30 EDT. Hello All, This paper explains a way to lead code execution using LFI with PHPINFO.

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This allows us to win the race, and effectively transform the LFI vulnerability into code execution. Why it is interessant? Thus, the environmental variable User-Agent is likely to appear there. But, as a developer, it’s nice to know all the extensions and their versions, etc.

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[WEB SECURITY] Insomnia: Whitepaper – LFI With PHPInfo Assistance

More in-depth techniques will be covered on the following writings. Security through obscurity is by no means a main defense to secure your systems. The previous example though is not user controlled. Fill in your details below or click an icon to log in: About the author The blog is made by Rioru Zheoske, you can contact me at rioru[at]seraphicsquad.

Phpnifo is an example code of how a page could include PHP code, from a different file, inside the file that uses the include statement. You can find it available here: Prepared with the assi Assistacne you got a LFI, a good technique to know if a folder exist is simply to enter, then go out of it.


Yet, it is worth having a look to the most common log files. He aesistance notes that the upload file will be stored in the tmp location, until the requested PHP page is fully processed. Home Questions Tags Users Unanswered. Email Required, but never shown.

Another popular technique is to manipulate the Process Environ file. For the following examples I will be using this payload to execute system commands:. Notify me of new comments via email.

Here is a list with some of them.

There phpiinfo several techniques to achieve this. Note that the User-Agent Header has been modified. Those are scenarios we encounter daily on Web Applications.

[WEB SECURITY] Insomnia: Whitepaper – LFI With PHPInfo Assistance

To make it work an attacker attempts to inject malicious input to the server log. Again, with Burp this is the malicious request sent. Another exploitation is the sessions exploitation. The question should be: As mentioned previously, the idea is to find an accessible log file and poison it with a malicious input.

There is no valid check to confirm that the input provided is indeed a language name and not a different file.


Local-File-Inclusion attacks aim to exploit such functions that have a weak user input validation. Email required Address never made public. Security through obscurity isn’t a valid means of protecting servers but, conversely, there’s no phplnfo in telling the “bad guys” which buggy version wssistance a piece of software you’re running. If conducted successfully, It might allow attackers to read sensitive information, access configuration files or even execute system commands remotely.

I guess the fear is that a hacker could somehow get phpinfo to run from injected php and find out all the extensions that are installed, their versions, etc.

From Local File Inclusion to Remote Code Execution – Part 1 | Outpost 24 blog

The null byte technique. As most web application vulnerabilities, the problem is mostly caused due to insufficient user input validation. This site uses cookies. That means that we can include a file that is outside of the web directory if we got rightsand execute PHP code. This is hardly done nowadays due to influent permissions.

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