CVE-2023-50842 – This SQL injection vulnerability in the MF Gig ... (How to Fix)

Q: What is the severity of CVE-2023-50842?

CVE-2023-50842 has a CVSS score of 8.5 (HIGH). This SQL injection vulnerability in the MF Gig Calendar WordPress plugin allows attackers to execute arbitrary SQL commands on the database. It affects all WordPress sites running MF Gig Calendar version 1.2.1 or earlier. Successful exploitation could lead to data theft, modification, or deletion.

📋 TL;DR

This SQL injection vulnerability in the MF Gig Calendar WordPress plugin allows attackers to execute arbitrary SQL commands on the database. It affects all WordPress sites running MF Gig Calendar version 1.2.1 or earlier. Successful exploitation could lead to data theft, modification, or deletion.

💻 Affected Systems

Products:

MF Gig Calendar WordPress Plugin

Versions: n/a through 1.2.1

Operating Systems: Any OS running WordPress

Default Config Vulnerable: ⚠️ Yes

Notes: All WordPress installations with the vulnerable plugin version are affected regardless of configuration.

📦 What is this software?

Mf Gig Calendar by Mf Gig Calendar Project

View all CVEs affecting Mf Gig Calendar →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete database compromise leading to data exfiltration, privilege escalation, or full site takeover.

🟠

Likely Case

Unauthorized data access, modification of calendar entries, or extraction of sensitive information from the database.

🟢

If Mitigated

Limited impact with proper input validation and parameterized queries preventing SQL injection.

🌐 Internet-Facing: HIGH

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: LIKELY

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

SQL injection vulnerabilities are commonly weaponized and have low exploitation complexity.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 1.2.2 or later

Vendor Advisory: https://patchstack.com/database/vulnerability/mf-gig-calendar/wordpress-mf-gig-calendar-plugin-1-2-1-sql-injection-vulnerability

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find MF Gig Calendar and update to version 1.2.2 or later. 4. If update not available, deactivate and remove the plugin.

🔧 Temporary Workarounds

Disable Plugin

all

Temporarily deactivate the MF Gig Calendar plugin to prevent exploitation.

wp plugin deactivate mf-gig-calendar

Web Application Firewall

all

Implement WAF rules to block SQL injection patterns targeting this plugin.

🧯 If You Can't Patch

Implement strict input validation and parameterized queries in custom code
Restrict database user permissions to minimum required for plugin functionality

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel > Plugins > Installed Plugins for MF Gig Calendar version 1.2.1 or earlier.

Check Version:

wp plugin get mf-gig-calendar --field=version

Verify Fix Applied:

Verify plugin version is 1.2.2 or later in WordPress admin panel.

📡 Detection & Monitoring

Log Indicators:

Unusual SQL queries in database logs
Multiple failed login attempts from single IP
Unexpected database errors in WordPress logs

Network Indicators:

HTTP requests with SQL injection payloads to plugin endpoints
Unusual database connection patterns

SIEM Query:

source="wordpress.log" AND "mf-gig-calendar" AND ("SQL" OR "database error")

📊 Metadata

CVE ID: CVE-2023-50842

CVSS v3 Score: 8.5 (HIGH)

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

CWE: CWE-89

Published: December 28, 2023

Last Updated: November 21, 2024

🔗 References

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