CVE-2023-29439
📋 TL;DR
Unauthenticated reflected cross-site scripting (XSS) vulnerability in FooGallery WordPress plugin versions 2.2.35 and earlier. Attackers can inject malicious scripts via crafted URLs, which execute in victims' browsers when they visit the compromised page. This affects all WordPress sites using vulnerable FooGallery plugin versions.
💻 Affected Systems
- FooGallery WordPress Plugin
📦 What is this software?
Foogallery by Fooplugins
⚠️ Risk & Real-World Impact
Worst Case
Attackers steal admin session cookies, hijack administrator accounts, install backdoors, deface websites, or redirect users to malicious sites, potentially leading to complete site compromise.
Likely Case
Attackers steal user session cookies, perform actions as logged-in users, or redirect users to phishing pages to steal credentials.
If Mitigated
With proper input validation and output encoding, malicious scripts are neutralized, preventing execution in user browsers.
🎯 Exploit Status
Exploitation requires tricking users into clicking malicious links. Public proof-of-concept demonstrates the vulnerability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.2.36
Vendor Advisory: https://patchstack.com/database/vulnerability/foogallery/wordpress-foogallery-plugin-2-2-35-reflected-cross-site-scripting-xss-vulnerability
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find FooGallery and click 'Update Now'. 4. Verify version is 2.2.36 or later.
🔧 Temporary Workarounds
Disable FooGallery Plugin
allTemporarily deactivate the vulnerable plugin until patched.
wp plugin deactivate foogallery
Implement WAF Rules
allAdd web application firewall rules to block XSS payloads targeting FooGallery endpoints.
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution sources.
- Use browser security extensions or plugins that block reflected XSS attacks.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for FooGallery version. If version is 2.2.35 or earlier, it's vulnerable.Check Version:
wp plugin get foogallery --field=versionVerify Fix Applied:
After updating, confirm FooGallery version is 2.2.36 or later in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual GET requests with script tags or JavaScript payloads to FooGallery endpoints in web server logs.
- Multiple failed login attempts or suspicious admin actions following XSS exploitation.
Network Indicators:
- HTTP requests containing malicious script payloads in URL parameters targeting FooGallery.
SIEM Query:
source="web_server_logs" AND (uri="*foogallery*" AND (uri="*<script>*" OR uri="*javascript:*" OR uri="*onerror=*"))🔗 References
- https://lourcode.kr/posts/CVE-2023-29439-Analysis?_s_id=cve
- https://patchstack.com/database/vulnerability/foogallery/wordpress-foogallery-plugin-2-2-35-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve
- https://lourcode.kr/posts/CVE-2023-29439-Analysis?_s_id=cve
- https://patchstack.com/database/vulnerability/foogallery/wordpress-foogallery-plugin-2-2-35-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve
