CVE-2020-24149
📋 TL;DR
This CVE describes a server-side request forgery (SSRF) vulnerability in the Podcast Importer SecondLine WordPress plugin. Attackers can exploit this by sending specially crafted requests to make the vulnerable server perform unauthorized requests to internal or external systems. WordPress sites using version 1.1.4 of this plugin are affected.
💻 Affected Systems
- Podcast Importer SecondLine WordPress plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete server compromise through internal service enumeration, credential theft from metadata services, or remote code execution via chained attacks.
Likely Case
Information disclosure from internal services, port scanning of internal networks, or abuse of the server as a proxy for malicious activities.
If Mitigated
Limited impact if network segmentation restricts internal access and external requests are filtered.
🎯 Exploit Status
Exploitation requires sending HTTP POST requests to the vulnerable endpoint with malicious podcast_feed parameter.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.1.5 and later
Vendor Advisory: https://wordpress.org/plugins/podcast-importer-secondline/#developers
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Podcast Importer SecondLine'. 4. Click 'Update Now' if available, or manually update to version 1.1.5+. 5. Verify plugin version after update.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily deactivate the Podcast Importer SecondLine plugin until patched.
wp plugin deactivate podcast-importer-secondline
Web Application Firewall rule
allBlock requests to the vulnerable endpoint using WAF rules.
Block POST requests to */wp-admin/admin.php?page=secondlinepodcastimport* with action=secondline_import_initialize
🧯 If You Can't Patch
- Implement strict network egress filtering to limit outbound connections from web servers
- Deploy web application firewall with SSRF protection rules
🔍 How to Verify
Check if Vulnerable:
Check WordPress plugin version: Navigate to Plugins → Installed Plugins and verify Podcast Importer SecondLine version is 1.1.4.Check Version:
wp plugin get podcast-importer-secondline --field=versionVerify Fix Applied:
Confirm plugin version is 1.1.5 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- HTTP POST requests to /wp-admin/admin.php?page=secondlinepodcastimport with podcast_feed parameter containing unusual URLs
- Outbound connections from web server to internal IP ranges or unusual domains
Network Indicators:
- Web server making unexpected outbound HTTP requests to internal services or unusual external domains
SIEM Query:
source="web_server_logs" AND (uri_path="/wp-admin/admin.php" AND query_string="page=secondlinepodcastimport" AND method="POST")