CVE-2023-28130: Checkpoint Gaia Portal Privilege Escalation

CVE-2023-28130 Overview

CVE-2023-28130 is a command injection vulnerability affecting Check Point Gaia Portal that enables authenticated local users to escalate privileges through the hostnames page. The vulnerability stems from improper input validation (CWE-20) and command injection (CWE-77) weaknesses in the Gaia Portal web management interface, allowing attackers with valid credentials to execute arbitrary system commands with elevated privileges.

Critical Impact

Authenticated attackers can leverage improper input handling in the Gaia Portal hostnames page to inject and execute arbitrary commands, potentially gaining full administrative control over Check Point security appliances.

Affected Products

• Check Point Gaia Portal R80.40
• Check Point Gaia Portal R81
• Check Point Gaia Portal R81.10
• Check Point Gaia Portal R81.20

Discovery Timeline

• 2023-07-26 - CVE-2023-28130 published to NVD
• 2024-11-21 - Last updated in NVD database

Technical Details for CVE-2023-28130

Vulnerability Analysis

This vulnerability represents a command injection flaw in the Check Point Gaia Portal's hostnames configuration page. The weakness allows authenticated users with access to the web management interface to inject malicious commands through improperly sanitized input fields. When processing hostname entries, the application fails to adequately validate user-supplied data before passing it to underlying system functions, creating an avenue for arbitrary command execution.

The attack requires network access and high-level privileges (administrator access to the Gaia Portal), but once these prerequisites are met, an attacker can achieve complete compromise of the system's confidentiality, integrity, and availability. This is particularly concerning as Gaia Portal manages critical Check Point security infrastructure.

Root Cause

The root cause lies in two fundamental security weaknesses:

1. Improper Input Validation (CWE-20): The hostnames page fails to properly validate and sanitize user-supplied input before processing, allowing special characters and command sequences to be passed through.

2. Command Injection (CWE-77): User-controlled input is concatenated directly into system commands without proper escaping or parameterization, enabling attackers to break out of the intended command context and execute arbitrary code.

Attack Vector

The attack is executed via network access to the Gaia Portal web interface. An authenticated administrator can navigate to the hostnames configuration page and supply specially crafted input containing command injection payloads. When the application processes this malicious input, the injected commands are executed with the privileges of the underlying service, typically resulting in elevated access to the system.

The vulnerability exploitation flow involves:

1. Authenticating to the Gaia Portal with valid administrator credentials
2. Accessing the hostnames configuration functionality
3. Submitting a crafted hostname entry containing shell metacharacters and commands
4. The backend processing the input without proper sanitization, executing the injected commands

For technical exploitation details, refer to the Pentest Blog CVE-2023-28130 Analysis and the Packet Storm Remote Command Execution advisory.

Detection Methods for CVE-2023-28130

Indicators of Compromise

• Unusual HTTP requests to the Gaia Portal hostnames configuration endpoints containing shell metacharacters (;, |, $(), backticks)
• Unexpected child processes spawned by Gaia Portal web server processes
• Anomalous system command execution patterns following web interface activity
• Modifications to system files or configurations that correlate with Gaia Portal access times

Detection Strategies

• Monitor Gaia Portal web server logs for requests to hostname configuration endpoints containing suspicious characters or command sequences
• Implement application-layer firewalls or web application firewalls (WAF) to detect and block command injection patterns
• Deploy endpoint detection and response (EDR) solutions to identify unauthorized process creation chains originating from web server processes
• Configure SIEM rules to correlate Gaia Portal authentication events with subsequent system-level command execution

Monitoring Recommendations

• Enable comprehensive logging for all Gaia Portal administrative actions and API calls
• Monitor process execution on Check Point appliances for unexpected shell commands or interpreter invocations
• Set up alerting for any modifications to critical system configurations made outside of normal administrative workflows
• Review authentication logs for compromised administrator accounts that may be used to exploit this vulnerability

How to Mitigate CVE-2023-28130

Immediate Actions Required

• Apply the security patch provided by Check Point as referenced in Check Point Security Advisory SK181311
• Restrict network access to the Gaia Portal management interface to trusted administrative networks only
• Review and audit all administrator accounts for signs of compromise
• Implement network segmentation to limit exposure of management interfaces

Patch Information

Check Point has released security updates to address this vulnerability. Administrators should consult the official Check Point Security Advisory SK181311 for detailed patch information, affected versions, and upgrade instructions. The patch addresses the improper input validation in the hostnames page functionality.

Workarounds

• Limit Gaia Portal access to only essential administrative personnel with verified need-to-know requirements
• Implement IP-based access control lists (ACLs) to restrict management interface access to specific trusted IP addresses
• Enable multi-factor authentication for all Gaia Portal administrator accounts
• Consider disabling direct web access to Gaia Portal and using command-line management alternatives where feasible until patches are applied

# Example: Restrict Gaia Portal access via network configuration
# Consult Check Point documentation for proper implementation

# Review current web management access settings
show web allowed-hosts

# Configure allowed hosts for management access (example)
set web allowed-hosts ipv4-address X.X.X.X/32