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WordPress AnyComment <0.3.5 - Open Redirect

ID: CVE-2021-24838

Severity: medium

Author: noobexploiter

Tags: cve2021,cve,redirect,anycomment,wpscan,wordpress,wp-plugin,bologer

Description

Section titled “Description”

WordPress AnyComment plugin before 0.3.5 contains an open redirect vulnerability via an API endpoint which passes user input via the redirect parameter to the wp_redirect() function without being validated. An attacker can redirect a user to a malicious site and possibly obtain sensitive information, modify data, and/or execute unauthorized operations.

YAML Source

Section titled “YAML Source”
id: CVE-2021-24838


info:
  name: WordPress AnyComment <0.3.5 - Open Redirect
  author: noobexploiter
  severity: medium
  description: |
    WordPress AnyComment plugin before 0.3.5 contains an open redirect vulnerability via an API endpoint which passes user input via the redirect parameter to the wp_redirect() function without being validated. An attacker can redirect a user to a malicious site and possibly obtain sensitive information, modify data, and/or execute unauthorized operations.
  impact: |
    An attacker can trick users into visiting a malicious website, leading to potential phishing attacks or the execution of other malicious activities.
  remediation: |
    Update to the latest version of WordPress AnyComment plugin (0.3.5 or higher) to fix the open redirect vulnerability.
  reference:
    - https://wpscan.com/vulnerability/562e81ad-7422-4437-a5b4-fcab9379db82
    - https://nvd.nist.gov/vuln/detail/CVE-2021-24838
    - 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-2021-24838
    cwe-id: CWE-601
    epss-score: 0.00106
    epss-percentile: 0.43227
    cpe: cpe:2.3:a:bologer:anycomment:*:*:*:*:*:wordpress:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: bologer
    product: anycomment
    framework: wordpress
  tags: cve2021,cve,redirect,anycomment,wpscan,wordpress,wp-plugin,bologer


http:
  - method: GET
    path:
      - "{{BaseURL}}/wp-json/anycomment/v1/auth/wordpress?redirect=https://interact.sh"
      - "{{BaseURL}}/wp-json/anycomment/v1/auth/wordpress?redirect=https://interact.sh?a=https://interact.sh"


    stop-at-first-match: true


    matchers-condition: and
    matchers:
      - type: regex
        part: header
        regex:
          - '(?m)^(?:Location\s*?:\s*?)(?:https?:\/\/|\/\/|\/\\\\|\/\\)(?:[a-zA-Z0-9\-_\.@]*)interact\.sh\/?(\/|[^.].*)?$' # https://regex101.com/r/L403F0/1


      - type: status
        status:
          - 302
# digest: 4b0a00483046022100edc6d9af03e271d6e8576179385d46dccc11b59cbbc6b5c54faddee27976b988022100c5fd79044b2ed5f0f47d79df190261c3d0bcbebd247984790a2a24b6e17ff097:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

Section titled “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.

Terminal window
$ nuclei -u "URL" -t "http/cves/2021/CVE-2021-24838.yaml"

View on Github