CVE-2024-56058
📋 TL;DR
This CVE describes a PHP object injection vulnerability in the Gueststream VRPConnector WordPress plugin that allows attackers to execute arbitrary code through deserialization of untrusted data. All WordPress sites using VRPConnector versions up to 2.0.1 are affected, potentially enabling remote code execution.
💻 Affected Systems
- Gueststream VRPConnector 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
Complete server compromise leading to data theft, ransomware deployment, or website defacement through remote code execution.
Likely Case
Unauthenticated attackers gaining shell access to the web server, installing backdoors, and establishing persistence.
If Mitigated
Limited impact if proper web application firewalls and input validation are in place, though the core vulnerability remains.
🎯 Exploit Status
Public exploit details are available on Patchstack, making this easily exploitable by attackers with basic skills.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.0.2 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find VRPConnector and update to version 2.0.2 or later. 4. Verify the update completed successfully.
🔧 Temporary Workarounds
Disable VRPConnector Plugin
allTemporarily disable the vulnerable plugin until patching is possible.
wp plugin deactivate vrpconnector
Web Application Firewall Rule
allBlock malicious serialized data patterns at the WAF level.
Add WAF rule to block requests containing PHP object serialization patterns
🧯 If You Can't Patch
- Remove the VRPConnector plugin entirely from the WordPress installation
- Implement strict network segmentation and limit access to affected WordPress instances
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → VRPConnector version. If version is 2.0.1 or earlier, you are vulnerable.Check Version:
wp plugin get vrpconnector --field=versionVerify Fix Applied:
Verify VRPConnector plugin version is 2.0.2 or later in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to WordPress endpoints, especially with serialized data patterns
- PHP error logs showing unserialize() warnings or errors
Network Indicators:
- HTTP requests containing serialized PHP object strings (O:8:"stdClass" patterns)
- Unusual outbound connections from web server post-exploitation
SIEM Query:
source="web_logs" AND (uri="*vrpconnector*" OR uri="*wp-admin*" OR uri="*wp-json*") AND (data="*O:*" OR data="*s:*" OR data="*a:*" OR data="*i:*")