Wiki source code of Application_PHP5

Version 8.1 by Nicolas Gregoire on 2012/01/13 17:24
Show last authors
1 Dixit [[Wikipedia>>http://en.wikipedia.org/wiki/PHP||rel="__blank"]] : "//PHP is a general-purpose server-side scripting language originally designed for web development to produce dynamic web pages. It is among one of the first developed server-side scripting languages that is embedded into a HTML source document, rather than calling an external file to process data. Ultimately, the code is interpreted by a web server with a PHP processor module which generates the resulting web page.//"
2
3
4
5 == Creating files ==
6
7 Version 5 of the PHP language uses the [[libxslt>>Engine_libxslt]] engine to transform XML documents using XSLT. Prior to version 5.3.9, calls to libxslt were not restricted via xsltSetSecurityPrefs(). It was then possible to create or overwrite files on the engine side, typically for dropping a PHP Web Shell (cf [[Bug #54446>>https://bugs.php.net/bug.php?id=54446||rel="__blank"]]).
8
9
10 The attached [[create-file-via-libxslt.php>>attach:create-file-via-libxslt.php]] PoC will drop a basic PHP script in /tmp/.
11
12 == Executing PHP code ==
13
14 A call to [[registerPHPFunctions()>>http://php.net/manual/en/xsltprocessor.registerphpfunctions.php]] allows to execute standard PHP functions directly from the XSLT stylesheet.