CVE-2023-29098 – Unauthenticated reflected cross-site scripting ... (How to Fix)

Q: What is the severity of CVE-2023-29098?

CVE-2023-29098 has a CVSS score of 7.1 (HIGH). Unauthenticated reflected cross-site scripting (XSS) vulnerability in the ArtistScope CopySafe Web Protection WordPress plugin allows attackers to inject malicious scripts via crafted URLs. This affects WordPress sites using the plugin version 3.13 or earlier. Attackers can execute arbitrary JavaScript in victims' browsers when they visit malicious links.

📋 TL;DR

Unauthenticated reflected cross-site scripting (XSS) vulnerability in the ArtistScope CopySafe Web Protection WordPress plugin allows attackers to inject malicious scripts via crafted URLs. This affects WordPress sites using the plugin version 3.13 or earlier. Attackers can execute arbitrary JavaScript in victims' browsers when they visit malicious links.

💻 Affected Systems

Products:

ArtistScope CopySafe Web Protection WordPress Plugin

Versions: <= 3.13

Operating Systems: Any OS running WordPress

Default Config Vulnerable: ⚠️ Yes

Notes: Affects all WordPress installations with vulnerable plugin versions enabled.

📦 What is this software?

Copysafe Web Protection by Artistscope

View all CVEs affecting Copysafe Web Protection →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Attackers could steal session cookies, perform actions as authenticated users, redirect to malicious sites, or install malware on visitors' systems.

🟠

Likely Case

Session hijacking, credential theft, or defacement of website content through injected scripts.

🟢

If Mitigated

Limited impact if proper content security policies (CSP) are implemented and user input validation is enforced.

🌐 Internet-Facing: HIGH

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ⚠️ Yes

Weaponized: LIKELY

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

Exploitation requires tricking users into clicking malicious links; no authentication needed.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: > 3.13

Vendor Advisory: https://patchstack.com/database/vulnerability/wp-copysafe-web/wordpress-copysafe-web-protection-plugin-3-13-cross-site-scripting-xss-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'CopySafe Web Protection' and update to latest version. 4. Verify update completes successfully.

🔧 Temporary Workarounds

Disable Plugin

all

Temporarily disable the vulnerable plugin until patched.

wp plugin deactivate wp-copysafe-web

Implement Content Security Policy

all

Add CSP headers to restrict script execution sources.

Add to .htaccess: Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Or configure in web server settings

🧯 If You Can't Patch

Implement web application firewall (WAF) rules to block XSS payloads.
Monitor for suspicious URL patterns in access logs.

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel > Plugins > Installed Plugins for 'CopySafe Web Protection' version <= 3.13.

Check Version:

wp plugin get wp-copysafe-web --field=version

Verify Fix Applied:

Confirm plugin version is > 3.13 in WordPress admin panel.

📡 Detection & Monitoring

Log Indicators:

Unusual URL parameters containing script tags or JavaScript in access logs.
Multiple failed requests with suspicious payloads.

Network Indicators:

HTTP requests with encoded script tags in query parameters.
Traffic spikes to plugin-specific endpoints.

SIEM Query:

source="web_access_logs" AND (uri="*<script>*" OR uri="*javascript:*") AND uri="*/wp-content/plugins/wp-copysafe-web/*"

📊 Metadata

CVE ID: CVE-2023-29098

CVSS v3 Score: 7.1 (HIGH)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

CWE: CWE-79

Published: May 26, 2023

Last Updated: November 21, 2024

🔗 References

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