CVE-2024-36514: ManageEngine ADAudit Plus SQLi Flaw

CVE-2024-36514 Overview

CVE-2024-36514 is an authenticated SQL injection vulnerability affecting Zohocorp ManageEngine ADAudit Plus versions below 8000. The vulnerability exists in the file summary option functionality, allowing authenticated attackers to inject malicious SQL queries. This flaw can be exploited remotely over the network to compromise confidentiality, integrity, and availability of the affected system and its underlying database.

Critical Impact
Authenticated attackers can exploit this SQL injection vulnerability to extract sensitive Active Directory audit data, modify database contents, or potentially achieve remote code execution through database exploitation techniques.

Affected Products

Zohocorp ManageEngine ADAudit Plus versions below 8000
All ADAudit Plus installations prior to the patched release

Discovery Timeline

August 23, 2024 - CVE-2024-36514 published to NVD
August 27, 2024 - Last updated in NVD database

Technical Details for CVE-2024-36514

Vulnerability Analysis

This vulnerability is classified as CWE-89 (Improper Neutralization of Special Elements used in an SQL Command), commonly known as SQL Injection. The flaw resides in the file summary option within ManageEngine ADAudit Plus, where user-supplied input is not properly sanitized before being incorporated into SQL queries.

ManageEngine ADAudit Plus is an enterprise Active Directory auditing solution that monitors and reports on changes to AD objects, user logon activity, and file server access. The file summary feature processes user input to generate reports, but fails to adequately validate or parameterize this input before constructing database queries.

The vulnerability requires authentication, meaning an attacker must possess valid credentials to the ADAudit Plus web interface. However, once authenticated—even with low-privilege access—an attacker can leverage this SQL injection to escalate their access and compromise the entire audit database.

Root Cause

The root cause of CVE-2024-36514 is improper input validation and the lack of parameterized queries in the file summary option. User-controlled input is concatenated directly into SQL statements without proper sanitization or escaping, allowing attackers to inject arbitrary SQL commands.

This represents a failure to implement secure coding practices, specifically the use of prepared statements or parameterized queries that would prevent user input from being interpreted as SQL code.

Attack Vector

The attack is conducted remotely over the network against the ManageEngine ADAudit Plus web interface. An attacker with low-privilege credentials can access the file summary functionality and inject malicious SQL payloads through vulnerable input parameters.

Once the malicious SQL is executed against the backend database, the attacker can:

Extract sensitive audit logs and Active Directory information
Modify or delete critical audit records
Potentially escalate to database-level command execution depending on database configuration
Compromise the integrity of the audit trail, which is particularly damaging for compliance-focused organizations

The vulnerability exploitation does not require user interaction beyond the attacker's own authenticated session.

Detection Methods for CVE-2024-36514

Indicators of Compromise

Unusual SQL error messages appearing in ADAudit Plus application logs
Unexpected database queries or query patterns in database server logs
Anomalous access to the file summary feature by user accounts
Large data transfers or exports from the ADAudit Plus database

Detection Strategies

Monitor ADAudit Plus application logs for SQL syntax errors or injection patterns such as single quotes, UNION statements, or comment sequences
Implement database activity monitoring to detect unusual query patterns against the ADAudit Plus database
Review web application firewall logs for SQL injection attack signatures targeting ManageEngine endpoints
Audit user access logs for suspicious activity around the file summary functionality

Monitoring Recommendations

Enable verbose logging for the ADAudit Plus application and database backend
Configure alerts for SQL injection attack patterns in web application firewall rules
Implement database query auditing to capture and analyze all queries executed against the ADAudit Plus database
Regularly review authentication logs for compromised or suspicious account activity

How to Mitigate CVE-2024-36514

Immediate Actions Required

Upgrade ManageEngine ADAudit Plus to version 8000 or later immediately
Review access logs for signs of exploitation prior to patching
Audit user accounts with access to the file summary functionality
Consider temporarily restricting access to the file summary option until patching is complete

Patch Information

Zohocorp has released a security update addressing this vulnerability in ManageEngine ADAudit Plus version 8000 and later. Organizations should upgrade to the latest available version to remediate this SQL injection vulnerability. Detailed patch information and upgrade instructions are available in the ManageEngine CVE-2024-36514 Advisory.

Workarounds

Implement strict network segmentation to limit access to the ADAudit Plus web interface to only authorized administrators
Deploy a web application firewall (WAF) with SQL injection detection rules in front of the ADAudit Plus instance
Restrict user account privileges to the minimum necessary access level
Monitor and alert on database queries for SQL injection patterns until patching can be completed

bash

# Example: Network access restriction using firewall rules
# Restrict ADAudit Plus web interface access to authorized management networks only
iptables -A INPUT -p tcp --dport 8081 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 8081 -j DROP