CWE-616
Incomplete Identification of Uploaded File Variables (PHP)
The PHP application uses an old method for processing uploaded files by referencing the four global variables that are set for each file (e.g. $varname, $varname_size, $varname_name, $varname_type). These variables could be overwritten by attackers, causing the application to process unauthorized files.
Mitigation
Phase: Architecture and Design
Description:
- Use PHP 4 or later.
Mitigation
Phase: Architecture and Design
Description:
- If you must support older PHP versions, write your own version of is_uploaded_file() and run it against $HTTP_POST_FILES['userfile']))
Mitigation
Phase: Implementation
Description:
- For later PHP versions, reference uploaded files using the $HTTP_POST_FILES or $_FILES variables, and use is_uploaded_file() or move_uploaded_file() to ensure that you are dealing with an uploaded file.
No CAPEC attack patterns related to this CWE.