CVE-2024-37881
📋 TL;DR
The SiteGuard WP Plugin vulnerability exposes the customized login page path through wp-register.php redirection. Attackers can discover hidden login URLs, potentially enabling brute-force attacks. WordPress sites using SiteGuard WP Plugin versions before 1.7.7 are affected.
💻 Affected Systems
- SiteGuard WP Plugin
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers discover the hidden login URL and perform successful brute-force attacks, gaining administrative access to the WordPress site.
Likely Case
Attackers discover the customized login path and conduct reconnaissance for potential credential stuffing or brute-force attempts.
If Mitigated
With proper monitoring and strong credentials, impact is limited to information disclosure about login URL location.
🎯 Exploit Status
Exploitation requires accessing wp-register.php endpoint, which may be disabled on some WordPress installations.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.7.7
Vendor Advisory: https://www.jp-secure.com/siteguard_wp_plugin_en/vuls/WPV2024001_en.html
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find SiteGuard WP Plugin. 4. Click 'Update Now' if update available. 5. Alternatively, download version 1.7.7+ from WordPress plugin repository and manually update.
🔧 Temporary Workarounds
Disable wp-register.php
linuxPrevent access to wp-register.php endpoint which is the source of the information leak.
Add to .htaccess: RedirectMatch 403 ^/wp-register\.php$
Disable Rename Login Feature
allTemporarily disable the vulnerable feature until patching.
Navigate to SiteGuard settings in WordPress admin and disable 'Rename Login Page' feature
🧯 If You Can't Patch
- Implement web application firewall rules to block access to wp-register.php
- Enable rate limiting and monitoring on login endpoints to detect brute-force attempts
🔍 How to Verify
Check if Vulnerable:
Check if accessing /wp-register.php redirects to or reveals the customized login page URL.Check Version:
Check WordPress admin panel → Plugins → SiteGuard WP Plugin version, or use: wp plugin list --name=siteguard --field=versionVerify Fix Applied:
After updating to 1.7.7+, verify that accessing /wp-register.php no longer reveals the customized login path.📡 Detection & Monitoring
Log Indicators:
- Multiple 302 redirects from wp-register.php to customized login URLs
- Unusual access patterns to wp-register.php endpoint
Network Indicators:
- HTTP 302 redirects from wp-register.php to non-standard login paths
SIEM Query:
web_access_logs status_code=302 AND uri_path="/wp-register.php"🔗 References
- https://jvn.jp/en/jp/JVN60331535/
- https://plugins.trac.wordpress.org/changeset/3094238/siteguard/trunk/classes/siteguard-rename-login.php?old=2888160&old_path=siteguard%2Ftrunk%2Fclasses%2Fsiteguard-rename-login.php
- https://www.jp-secure.com/siteguard_wp_plugin_en/vuls/WPV2024001_en.html
- https://jvn.jp/en/jp/JVN60331535/
- https://plugins.trac.wordpress.org/changeset/3094238/siteguard/trunk/classes/siteguard-rename-login.php?old=2888160&old_path=siteguard%2Ftrunk%2Fclasses%2Fsiteguard-rename-login.php
- https://www.jp-secure.com/siteguard_wp_plugin_en/vuls/WPV2024001_en.html
