CVE-2025-30062: CheckUnitCodeAndKey.pl SQL Injection Flaw

CVE-2025-30062 Overview

CVE-2025-30062 is a SQL Injection vulnerability discovered in the CheckUnitCodeAndKey.pl service. Specifically, the validateOrgUnit function within this service fails to properly sanitize user-supplied input before incorporating it into SQL queries. This flaw allows authenticated attackers on adjacent networks to extract sensitive database information through crafted SQL payloads.

Critical Impact

This SQL injection vulnerability enables unauthorized read access to confidential database contents, potentially exposing patient records, organizational data, and other sensitive healthcare information stored in the affected CGM CliniNet system.

Affected Products

• CGM CliniNet (hospital management software)
• Systems utilizing the CheckUnitCodeAndKey.pl service
• Healthcare deployments with the validateOrgUnit function exposed

Discovery Timeline

• 2026-03-02 - CVE-2025-30062 published to NVD
• 2026-03-02 - Last updated in NVD database

Technical Details for CVE-2025-30062

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 validateOrgUnit function within the Perl-based CheckUnitCodeAndKey.pl service constructs SQL queries dynamically using input parameters without proper sanitization or parameterized query mechanisms.

The adjacent network attack vector indicates that exploitation requires the attacker to have network-level access to the internal network segment where the vulnerable service operates. This is particularly concerning in healthcare environments where internal network segmentation may not be sufficiently robust.

Root Cause

The root cause of CVE-2025-30062 stems from improper input validation in the validateOrgUnit function. The Perl service directly concatenates user-supplied organizational unit parameters into SQL query strings without employing prepared statements, input sanitization, or parameterized queries. This allows metacharacters and SQL syntax to be interpreted as part of the query structure rather than as literal data values.

Attack Vector

Exploitation requires an authenticated attacker with access to the adjacent network where the vulnerable service operates. The attacker can manipulate input parameters sent to the validateOrgUnit function to inject malicious SQL statements. Since the vulnerability allows high confidentiality impact with no integrity or availability impact, the primary exploitation scenario involves extracting sensitive data from the database through techniques such as UNION-based injection, error-based injection, or blind SQL injection techniques.

The vulnerability can be exploited by crafting malicious organizational unit code parameters that include SQL metacharacters and query fragments. When these parameters are processed by the validateOrgUnit function, the injected SQL commands execute within the context of the database connection, allowing unauthorized data retrieval.

Detection Methods for CVE-2025-30062

Indicators of Compromise

• Unusual SQL syntax patterns in web application logs for CheckUnitCodeAndKey.pl requests
• Database query logs showing unexpected UNION, SELECT, or other SQL keywords in organizational unit parameters
• Error messages in application logs revealing database schema information
• Anomalous read operations or bulk data access patterns in database audit logs

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect SQL injection patterns targeting the validateOrgUnit endpoint
• Monitor application logs for requests containing SQL metacharacters such as single quotes, double dashes, or semicolons in organizational unit parameters
• Enable database query logging and audit for suspicious query patterns or excessive data retrieval
• Deploy intrusion detection systems with signatures for SQL injection attack patterns

Monitoring Recommendations

• Configure alerting for failed authentication attempts followed by anomalous database queries
• Monitor network traffic on adjacent network segments for suspicious activity targeting the affected service
• Implement database activity monitoring to detect unauthorized data extraction attempts
• Review access logs for the CheckUnitCodeAndKey.pl service for unusual request patterns or parameter values

How to Mitigate CVE-2025-30062

Immediate Actions Required

• Restrict network access to the CheckUnitCodeAndKey.pl service to only authorized systems and users
• Implement input validation and sanitization for all parameters processed by the validateOrgUnit function
• Apply Web Application Firewall rules to block SQL injection payloads targeting the vulnerable endpoint
• Review and audit database access logs for any indication of prior exploitation

Patch Information

Organizations should consult the CERT Security Advisory for detailed remediation guidance. Contact CGM through their official product page for vendor-specific patches and security updates for CGM CliniNet deployments.

Workarounds

• Implement parameterized queries or prepared statements in the validateOrgUnit function to prevent SQL injection
• Deploy a Web Application Firewall with SQL injection detection rules in front of the vulnerable service
• Apply strict input validation using allowlist-based filtering for organizational unit parameters
• Segment the network to limit adjacent network access to the vulnerable service
• Implement database user privilege restrictions to minimize the impact of successful exploitation

# Example: Network access restriction using iptables
# Restrict access to the vulnerable service port from unauthorized network segments
iptables -A INPUT -p tcp --dport 80 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP

# Enable database query logging for monitoring
# PostgreSQL example:
# log_statement = 'all' in postgresql.conf