CVE-2024-2739

8.7 HIGH

📋 TL;DR

This vulnerability in the Advanced Search WordPress plugin allows attackers to perform Cross-Site Request Forgery (CSRF) attacks against logged-in users. Attackers can trick authenticated users into performing unwanted actions without their knowledge. WordPress sites using vulnerable versions of this plugin are affected.

💻 Affected Systems

Products:
  • Advanced Search WordPress Plugin
Versions: 1.1.6 and earlier
Operating Systems: All
Default Config Vulnerable: ⚠️ Yes
Notes: Requires WordPress installation with the plugin enabled and users must be logged in.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Attackers could trick administrators into changing site settings, creating new admin accounts, or modifying content, potentially leading to complete site compromise.

🟠

Likely Case

Attackers trick users into performing actions like changing their own passwords, submitting forms, or modifying content they have access to.

🟢

If Mitigated

With proper CSRF protections and user awareness, impact is limited to actions within the user's existing permissions.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

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

CSRF attacks are well-understood and easy to implement; exploitation requires user interaction.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 1.1.7 or later

Vendor Advisory: https://wpscan.com/vulnerability/5b84145b-f94e-4ea7-84d5-56cf776817a2/

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Go to Plugins → Installed Plugins. 3. Find 'Advanced Search' plugin. 4. Click 'Update Now' if available. 5. Alternatively, download version 1.1.7+ from WordPress repository and replace plugin files.

🔧 Temporary Workarounds

Disable Plugin

all

Temporarily disable the vulnerable plugin until patched

wp plugin deactivate advanced-search

Implement CSRF Protection

all

Add CSRF tokens to plugin forms if customizing is possible

🧯 If You Can't Patch

  • Restrict plugin access to trusted users only
  • Implement web application firewall rules to detect CSRF patterns

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel → Plugins → Advanced Search → Version number

Check Version:

wp plugin get advanced-search --field=version

Verify Fix Applied:

Verify plugin version is 1.1.7 or higher after update

📡 Detection & Monitoring

Log Indicators:

  • Unusual form submissions from authenticated users
  • Multiple failed CSRF token validations

Network Indicators:

  • POST requests without proper referrer headers
  • Requests with missing CSRF tokens

SIEM Query:

source="wordpress" AND (event="plugin_update" AND plugin="advanced-search") OR (event="form_submission" AND plugin="advanced-search")

🔗 References

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