Oracle WebLogic Server - Remote Code Execution

Exploited in the wild. Listed by CISA on 2023-11-16; known to be used by ransomware.

criticalseverity

9.8CVSS score

92.8%likelihood of exploitation, next 30 days

100%of all CVEs are less likely

Readycheck to confirm it

Oracle WebLogic Server (Oracle Fusion Middleware (component: WLS Core Components) is susceptible to a remote code execution vulnerability. Supported versions that are affected are 10.3.6.0.0, 12.1.3.0.0, 2.2.1.3.0 and 12.2.1.4.0. This easily exploitable vulnerability could allow unauthenticated attackers with network access via IIOP to compromise Oracle WebLogic Server.

Impact

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system.

Fix

Apply the latest security patches provided by Oracle to mitigate this vulnerability.

How to confirm it

Send: GET {{BaseURL}}/console/login/LoginForm.jsp
Positive when: contains "10.3.6.0" or "12.1.3.0" or "12.2.1.3" or "12.2.1.4" AND contains "WebLogic" AND status 200

Run it with nuclei: nuclei -id CVE-2020-2551 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2020-2551

info:
  name: Oracle WebLogic Server - Remote Code Execution
  author: dwisiswant0
  severity: critical
  description: |
    Oracle WebLogic Server (Oracle Fusion Middleware (component: WLS Core Components) is susceptible to a remote code execution vulnerability. Supported versions that are affected are 10.3.6.0.0, 12.1.3.0.0, 2.2.1.3.0 and 12.2.1.4.0. This easily exploitable vulnerability could allow unauthenticated attackers with network access via IIOP to compromise Oracle WebLogic Server.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system.
  remediation: |
    Apply the latest security patches provided by Oracle to mitigate this vulnerability.
  reference:
    - https://github.com/hktalent/CVE-2020-2551
    - https://nvd.nist.gov/vuln/detail/CVE-2020-2551
    - https://www.oracle.com/security-alerts/cpujan2020.html
    - https://github.com/neilzhang1/Chinese-Charts
    - https://github.com/pjgmonteiro/Pentest-tools
  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-2020-2551
    epss-score: 0.92817
    epss-percentile: 0.99831
    cpe: cpe:2.3:a:oracle:weblogic_server:10.3.6.0.0:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: oracle
    product: weblogic_server
    shodan-query:
      - http.title:"oracle peoplesoft sign-in"
      - product:"oracle weblogic"
    fofa-query: title="oracle peoplesoft sign-in"
    google-query: intitle:"oracle peoplesoft sign-in"
  tags: cve2020,cve,oracle,weblogic,rce,unauth,kev,vkev,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/console/login/LoginForm.jsp"

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "10.3.6.0"
          - "12.1.3.0"
          - "12.2.1.3"
          - "12.2.1.4"
        condition: or

      - type: word
        part: body
        words:
          - "WebLogic"

      - type: status
        status:
          - 200

References

Use this check only on systems you are authorised to test. Where the data comes from