CVE-2024-53723
📋 TL;DR
This CSRF vulnerability in the Google Plus Share and +1 Button WordPress plugin allows attackers to trick authenticated administrators into performing actions that inject malicious scripts. When exploited, it leads to stored XSS, potentially affecting all visitors to the compromised WordPress site. The vulnerability affects all versions up to 1.0 of this plugin.
💻 Affected Systems
- Google Plus Share and +1 Button WordPress 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 could inject persistent malicious scripts that steal session cookies, redirect users to phishing sites, or deface the website for all visitors.
Likely Case
Attackers would inject malicious scripts to steal administrator credentials or session cookies, potentially gaining full control of the WordPress site.
If Mitigated
With proper CSRF protections and input validation, the attack would fail at the initial CSRF stage before reaching XSS.
🎯 Exploit Status
Exploitation requires social engineering to trick an authenticated administrator into clicking a malicious link while logged in.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 1.0 (plugin appears abandoned)
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Google Plus Share and +1 Button'. 4. Click 'Deactivate' then 'Delete'. 5. Remove plugin files from /wp-content/plugins/google-plus-share-and-plusone-button/.
🔧 Temporary Workarounds
Implement CSRF Protection
WordPressAdd nonce verification to all plugin forms and AJAX endpoints
Add wp_nonce_field() to forms and check with wp_verify_nonce()
Input Validation and Sanitization
WordPressImplement proper input validation and output escaping
Use esc_html(), esc_attr(), wp_kses() for all user inputs
🧯 If You Can't Patch
- Disable or remove the Google Plus Share and +1 Button plugin immediately
- Implement web application firewall rules to block CSRF attempts and XSS payloads
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin > Plugins > Installed Plugins for 'Google Plus Share and +1 Button' version 1.0 or earlierCheck Version:
wp plugin list --name='Google Plus Share and +1 Button' --field=versionVerify Fix Applied:
Confirm the plugin is no longer present in /wp-content/plugins/ directory📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin endpoints without proper referrer headers
- Administrator actions from unexpected IP addresses or user agents
Network Indicators:
- CSRF attempts with malicious payloads in POST parameters
- Requests to plugin endpoints without corresponding user sessions
SIEM Query:
source="wordpress.log" AND ("google-plus-share" OR "plusone-button") AND (POST OR "wp-admin")