webftpInclude.txt

`SYSCP WEBFTP LOCAL FILE INCLUSION VULNERABILITY  
  
Thomas Henlich  
  
DESCRIPTION  
  
Thomas Henlich has discovered a vulnerability in WebFTP, which can be  
used by remote attackers to disclose potentially sensitive information  
and to compromise a vulnerable system.  
  
Input passed to the "webftp_language" parameter in "webftp.php" isn't  
properly validated before being used to include files. This can be  
exploited to include arbitrary files from local sources.  
  
Successful exploitation allows execution of arbitrary local PHP scripts  
on a vulnerable server with privileges of the web server daemon without  
requiring authentication.  
  
BACKGROUND  
  
SysCP is an open-source shared server management tool for Linux servers.  
The WebFTP module is a SysCP module which provides a Web interface to  
manage files on a FTP server. WebFTP can be used independently from a  
SysCP installation.  
  
AFFECTED VERSIONS  
  
- WebFTP 1.2.6  
- possibly earlier versions as well component  
  
RESOLUTION  
  
Upgrade to version 1.2.8 or higher.  
  
PROOF OF CONCEPT  
  
Perform a POST request to webftp.php with a variable  
webftp_language=../../<some_file>%%00  
  
TIMELINE  
  
2005-12-01: Initial vendor notification.  
2005-12-01: Initial vendor reply.  
2005-12-07: Bugfix available.  
2006-01-04: Public disclosure.  
  
  
  
`