CVE-2024-20360: Cisco Firewall Management Center SQLi Flaw

CVE-2024-20360 Overview

A SQL injection vulnerability exists in the web-based management interface of Cisco Firepower Management Center (FMC) Software that could allow an authenticated, remote attacker to conduct SQL injection attacks on affected systems. This vulnerability exists because the web-based management interface does not adequately validate user input. An attacker could exploit this vulnerability by authenticating to the application and sending crafted SQL queries to an affected system.

Critical Impact

Successful exploitation allows attackers to obtain any data from the database, execute arbitrary commands on the underlying operating system, and elevate privileges to root. Only Read Only user credentials are required for exploitation.

Affected Products

• Cisco Secure Firewall Management Center 7.0.x (versions 7.0.0 through 7.0.6)
• Cisco Secure Firewall Management Center 7.1.x (versions 7.1.0 through 7.1.0.3)
• Cisco Secure Firewall Management Center 7.2.x (versions 7.2.0 through 7.2.5)
• Cisco Secure Firewall Management Center 7.3.x (versions 7.3.0 through 7.3.1.2)

Discovery Timeline

• May 22, 2024 - CVE-2024-20360 published to NVD
• April 11, 2025 - Last updated in NVD database

Technical Details for CVE-2024-20360

Vulnerability Analysis

This SQL injection vulnerability (CWE-89) affects the web-based management interface of Cisco Firepower Management Center. The vulnerability stems from inadequate validation of user-supplied input in the management interface, allowing authenticated attackers to inject malicious SQL statements. What makes this vulnerability particularly dangerous is the cascade of potential impacts: database compromise, operating system command execution, and privilege escalation to root.

The attack requires network access and authentication with at least Read Only credentials, which are commonly provisioned across enterprise environments for monitoring and reporting purposes. This low privilege requirement significantly expands the potential attack surface, as compromised low-privilege accounts or insider threats could leverage this vulnerability for complete system takeover.

Root Cause

The root cause is improper input validation (CWE-89: Improper Neutralization of Special Elements used in an SQL Command) in the web-based management interface. User-supplied input is passed directly to SQL queries without adequate sanitization or parameterization, allowing attackers to modify the intended query structure and inject arbitrary SQL commands.

Attack Vector

The attack is executed over the network against the web-based management interface. An attacker first authenticates to the FMC with at least Read Only credentials, then crafts malicious SQL queries targeting vulnerable parameters in the management interface. The injected SQL can be used to extract sensitive data from the database, execute commands on the underlying operating system, or escalate privileges to root level access.

Since no verified exploit code is available, the specific injection points and payload structures have not been publicly disclosed. Security teams should refer to the Cisco Security Advisory for detailed technical information and consult with Cisco TAC for specific guidance on affected deployments.

Detection Methods for CVE-2024-20360

Indicators of Compromise

• Unusual SQL error messages or database exceptions in FMC application logs
• Unexpected database queries or access patterns from the web management interface
• Evidence of privilege escalation or unauthorized root-level activity on FMC systems
• Anomalous command execution or process spawning on the underlying operating system

Detection Strategies

• Monitor FMC web application logs for SQL injection patterns including single quotes, UNION statements, and comment sequences (--, /**/)
• Implement database activity monitoring to detect unusual query patterns or unauthorized data access
• Review authentication logs for suspicious login activity, particularly from Read Only accounts followed by administrative actions
• Deploy network intrusion detection systems (IDS) with signatures for SQL injection attacks targeting management interfaces

Monitoring Recommendations

• Enable verbose logging on Cisco FMC management interfaces and centralize logs for SIEM analysis
• Implement real-time alerting for failed authentication attempts followed by successful logins to FMC
• Monitor for unexpected outbound connections from FMC systems that could indicate post-exploitation activity
• Track process execution and file system changes on FMC hosts for signs of command injection or privilege escalation

How to Mitigate CVE-2024-20360

Immediate Actions Required

• Apply the latest security patches from Cisco as soon as possible
• Restrict network access to the FMC web management interface to trusted administrative networks only
• Review and audit all user accounts with FMC access, removing unnecessary Read Only accounts
• Implement network segmentation to isolate FMC systems from general network traffic

Patch Information

Cisco has released security updates to address this vulnerability. Organizations should consult the Cisco Security Advisory cisco-sa-fmc-sqli-WFFDnNOs for specific patched versions and upgrade guidance. Ensure you upgrade to a version that is not listed in the affected products range.

Workarounds

• Implement strict access controls limiting FMC management interface access to authorized administrators from trusted networks
• Use a web application firewall (WAF) in front of the FMC management interface to filter SQL injection attempts
• Enable multi-factor authentication (MFA) for all FMC user accounts to reduce credential compromise risk
• Consider temporarily disabling Read Only accounts if not operationally required until patches can be applied

# Network access restriction example (firewall rule)
# Restrict FMC management interface (TCP 443) to trusted admin networks only
iptables -A INPUT -p tcp --dport 443 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP