CVE-2024-37098

4.4 MEDIUM

📋 TL;DR

This Server-Side Request Forgery (SSRF) vulnerability in the BlossomThemes Email Newsletter WordPress plugin allows attackers to make the server send unauthorized requests to internal or external systems. It affects all WordPress sites using vulnerable versions of this plugin, potentially exposing internal network resources.

💻 Affected Systems

Products:
  • BlossomThemes Email Newsletter WordPress Plugin
Versions: n/a through 2.2.6
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Affects WordPress installations with the vulnerable plugin activated.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Attackers could access internal services, scan internal networks, interact with cloud metadata services, or perform port scanning from the vulnerable server.

🟠

Likely Case

Information disclosure from internal services, limited internal network reconnaissance, or abuse of the server as a proxy for malicious requests.

🟢

If Mitigated

Limited impact if network segmentation restricts internal access and external requests are filtered.

🌐 Internet-Facing: MEDIUM
🏢 Internal Only: LOW

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: LOW

SSRF vulnerabilities typically require some level of access to trigger, but exploitation mechanics are generally straightforward once access is obtained.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 2.2.7

Vendor Advisory: https://patchstack.com/database/vulnerability/blossomthemes-email-newsletter/wordpress-blossomthemes-email-newsletter-plugin-2-2-7-server-side-request-forgery-ssrf-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'BlossomThemes Email Newsletter'. 4. Click 'Update Now' if available, or download version 2.2.7 from WordPress repository. 5. Replace plugin files if manual update required.

🔧 Temporary Workarounds

Disable Plugin

all

Temporarily deactivate the vulnerable plugin until patched.

wp plugin deactivate blossomthemes-email-newsletter

Network Restriction

all

Configure web application firewall to block SSRF patterns or restrict outbound requests from web server.

🧯 If You Can't Patch

  • Implement strict network segmentation to isolate WordPress server from sensitive internal systems.
  • Deploy web application firewall with SSRF protection rules and request validation.

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin → Plugins → Installed Plugins for BlossomThemes Email Newsletter version ≤2.2.6.

Check Version:

wp plugin get blossomthemes-email-newsletter --field=version

Verify Fix Applied:

Confirm plugin version is 2.2.7 or higher in WordPress admin panel.

📡 Detection & Monitoring

Log Indicators:

  • Unusual outbound HTTP requests from web server to internal IPs or unexpected domains
  • Multiple failed connection attempts to internal services from web server

Network Indicators:

  • Web server making requests to internal network segments, cloud metadata endpoints (169.254.169.254), or localhost

SIEM Query:

source="web_server_logs" dest_ip IN (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, 127.0.0.1, 169.254.169.254)

🔗 References

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