CVE-2024-4874
📋 TL;DR
This vulnerability in the Bricks Builder WordPress plugin allows authenticated users with Contributor-level access or higher to modify posts and pages created by other users, including administrators. Attackers can exploit this by manipulating the postId parameter without proper validation. The vulnerability requires that administrators have specifically enabled editor access for these users or for certain user account types.
💻 Affected Systems
- Bricks Builder WordPress Plugin
📦 What is this software?
Bricks by Bricksbuilder
⚠️ Risk & Real-World Impact
Worst Case
Attackers could deface websites, inject malicious content, or delete/modify critical posts and pages, potentially compromising website integrity and user trust.
Likely Case
Unauthorized modification of posts and pages by lower-privileged users, leading to content manipulation and potential SEO or reputation damage.
If Mitigated
Limited impact with proper user role management and access controls in place, restricting editor access to trusted users only.
🎯 Exploit Status
Exploitation requires authenticated access with Contributor privileges or higher and administrator-enabled editor access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.9.9
Vendor Advisory: https://bricksbuilder.io/release/bricks-1-9-9/#access-control-fix-for-user-role-contributor
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Bricks Builder and click 'Update Now'. 4. Alternatively, download version 1.9.9+ from the WordPress repository and manually update.
🔧 Temporary Workarounds
Restrict Editor Access
allDisable editor access for Contributor-level users and other non-trusted roles until patched.
Role-Based Access Control
allImplement strict role-based permissions to limit who can edit posts/pages.
🧯 If You Can't Patch
- Temporarily disable the Bricks Builder plugin if not essential.
- Implement web application firewall (WAF) rules to block suspicious postId parameter manipulations.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for Bricks Builder version. If version is 1.9.8 or lower, it is vulnerable.Check Version:
wp plugin list --name=bricks --field=versionVerify Fix Applied:
After updating, confirm Bricks Builder version is 1.9.9 or higher in the WordPress plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual post/page modifications by Contributor-level users
- Failed authorization attempts for post editing
Network Indicators:
- HTTP POST requests with manipulated postId parameters to WordPress admin endpoints
SIEM Query:
source="wordpress.log" AND (event="post_modified" OR event="page_modified") AND user_role="contributor"🔗 References
- https://bricksbuilder.io/release/bricks-1-9-9/#access-control-fix-for-user-role-contributor
- https://www.wordfence.com/threat-intel/vulnerabilities/id/6d63e898-43e5-42b5-96b6-1453352e0cae?source=cve
- https://bricksbuilder.io/release/bricks-1-9-9/#access-control-fix-for-user-role-contributor
- https://www.wordfence.com/threat-intel/vulnerabilities/id/6d63e898-43e5-42b5-96b6-1453352e0cae?source=cve
