CVE-2023-3409 – This CSRF vulnerability in the Bricks WordPress... (How to Fix)

Q: What is the severity of CVE-2023-3409?

CVE-2023-3409 has a CVSS score of 5.4 (MEDIUM). This CSRF vulnerability in the Bricks WordPress theme allows unauthenticated attackers to reset all theme settings by tricking an administrator into clicking a malicious link. Attackers could disrupt site functionality or configuration, but cannot directly execute code or access data. All WordPress sites using Bricks theme version 1.8.1 or earlier are affected.

📋 TL;DR

This CSRF vulnerability in the Bricks WordPress theme allows unauthenticated attackers to reset all theme settings by tricking an administrator into clicking a malicious link. Attackers could disrupt site functionality or configuration, but cannot directly execute code or access data. All WordPress sites using Bricks theme version 1.8.1 or earlier are affected.

💻 Affected Systems

Products:

Bricks WordPress Theme

Versions: Up to and including 1.8.1

Operating Systems: Any OS running WordPress

Default Config Vulnerable: ⚠️ Yes

Notes: Requires WordPress installation with Bricks theme active. Vulnerability exists in default configuration.

📦 What is this software?

Bricks by Bricksbuilder

View all CVEs affecting Bricks →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Site administrators could have theme settings completely reset, potentially breaking site functionality, customizations, and layouts until manually reconfigured.

🟠

Likely Case

Attackers reset theme settings causing temporary site disruption, loss of custom configurations, and requiring administrative time to restore settings.

🟢

If Mitigated

With proper CSRF protections and user awareness, exploitation attempts fail with no impact on site functionality.

🌐 Internet-Facing: MEDIUM

🏢 Internal Only: LOW

🎯 Exploit Status

Public PoC: ⚠️ Yes

Weaponized: LIKELY

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

Exploitation requires social engineering to trick administrators into clicking malicious links. No authentication required for the CSRF attack itself.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 1.8.2 or later

Vendor Advisory: https://bricksbuilder.io/

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Appearance > Themes. 3. Check Bricks theme version. 4. If version is 1.8.1 or earlier, update to latest version via WordPress updates or manual upload.

🔧 Temporary Workarounds

CSRF Protection Plugin

all

Install a WordPress security plugin that adds CSRF protection globally

Restrict Admin Access

all

Limit administrator access to trusted networks only

🧯 If You Can't Patch

Implement strict access controls for WordPress admin panel
Educate administrators about phishing risks and safe browsing practices

🔍 How to Verify

Check if Vulnerable:

Check Bricks theme version in WordPress admin under Appearance > Themes. If version is 1.8.1 or earlier, system is vulnerable.

Check Version:

WordPress does not have a CLI command for theme version. Check via admin panel or inspect theme files.

Verify Fix Applied:

Confirm Bricks theme version is 1.8.2 or later in WordPress admin panel.

📡 Detection & Monitoring

Log Indicators:

POST requests to /wp-admin/admin-ajax.php with action=bricks_reset_settings
Theme settings reset events in WordPress logs

Network Indicators:

HTTP POST requests to admin-ajax.php endpoint with reset parameters from unexpected sources

SIEM Query:

source="wordpress.logs" AND "bricks_reset_settings"

📊 Metadata

CVE ID: CVE-2023-3409

CVSS v3 Score: 5.4 (MEDIUM)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

CWE: CWE-352

Published: August 17, 2024

Last Updated: September 13, 2024

🔗 References

https://bricksbuilder.io/ Product
https://www.wordfence.com/threat-intel/vulnerabilities/id/16800ece-da9c-431b-a015-42bd30b646e2?source=cve Third Party Advisory

📤 Share & Export

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🔗 Related Vulnerabilities

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