CVE-2024-7770 – This vulnerability allows authenticated WordPre... (How to Fix)

Q: What is the severity of CVE-2024-7770?

CVE-2024-7770 has a CVSS score of 8.8 (HIGH). This vulnerability allows authenticated WordPress users with Subscriber-level access or higher to upload arbitrary files due to missing file type validation in the Bit File Manager plugin. Attackers can potentially achieve remote code execution by uploading malicious files like PHP shells. All WordPress sites using vulnerable plugin versions are affected.

📋 TL;DR

This vulnerability allows authenticated WordPress users with Subscriber-level access or higher to upload arbitrary files due to missing file type validation in the Bit File Manager plugin. Attackers can potentially achieve remote code execution by uploading malicious files like PHP shells. All WordPress sites using vulnerable plugin versions are affected.

💻 Affected Systems

Products:

Bit File Manager - WordPress File Manager and Code Editor

Versions: All versions up to and including 6.5.5

Operating Systems: All operating systems running WordPress

Default Config Vulnerable: ⚠️ Yes

Notes: Requires authenticated user with upload permissions granted by administrator.

📦 What is this software?

File Manager by Bitapps

View all CVEs affecting File Manager →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Full server compromise leading to data theft, defacement, malware distribution, or ransomware deployment.

🟠

Likely Case

Unauthorized file upload leading to webshell installation and limited server access.

🟢

If Mitigated

File upload attempts logged and blocked, no successful exploitation.

🌐 Internet-Facing: HIGH - WordPress sites are typically internet-facing and accessible to attackers.

🏢 Internal Only: MEDIUM - Internal WordPress instances could still be targeted by compromised accounts.

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: LIKELY

Unauthenticated Exploit: ✅ No

Complexity: LOW

Exploitation requires authenticated access but is straightforward once an account is compromised.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 6.5.6 or later

Vendor Advisory: https://plugins.trac.wordpress.org/changeset/3138710/

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Bit File Manager' and click 'Update Now'. 4. Verify version is 6.5.6 or higher.

🔧 Temporary Workarounds

Disable plugin

all

Temporarily deactivate the vulnerable plugin until patched.

wp plugin deactivate file-manager

Restrict upload permissions

all

Remove upload permissions from Subscriber and other non-admin roles.

🧯 If You Can't Patch

Implement web application firewall (WAF) rules to block file uploads with dangerous extensions
Monitor file upload directories for suspicious files and implement file integrity monitoring

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel → Plugins → Installed Plugins for Bit File Manager version.

Check Version:

wp plugin get file-manager --field=version

Verify Fix Applied:

Confirm plugin version is 6.5.6 or higher in WordPress admin.

📡 Detection & Monitoring

Log Indicators:

Unusual file uploads to wp-content/plugins/file-manager directories
POST requests to file manager upload endpoints from non-admin users

Network Indicators:

HTTP POST requests to /wp-content/plugins/file-manager/backend/app/Http/Controllers/FileManagerController.php

SIEM Query:

source="wordpress.log" AND "file-manager" AND "upload" AND (user_role="subscriber" OR user_role!="administrator")

📊 Metadata

CVE ID: CVE-2024-7770

CVSS v3 Score: 8.8 (HIGH)

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

CWE: CWE-434

Published: September 10, 2024

Last Updated: September 26, 2024

🔗 References

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