CVE-2024-56145

Comprehensive Technical Analysis of CVE-2024-56145

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2024-56145 CISA Vulnerability Name: Craft CMS Code Injection Vulnerability CVSS Score: 9.8

The CVSS score of 9.8 indicates a critical vulnerability. This high score is due to the potential for remote code execution (RCE), which can lead to complete system compromise. The vulnerability affects Craft CMS, a popular content management system, and is triggered by a specific PHP configuration setting (register_argc_argv).

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Remote Code Execution (RCE): The primary attack vector is remote code execution, where an attacker can inject and execute arbitrary code on the server.
• Configuration Exploitation: The vulnerability is exploitable if the register_argc_argv setting is enabled in the php.ini configuration file. This setting allows the PHP script to access command-line arguments, which can be manipulated by an attacker.

Exploitation Methods:

• Command Injection: An attacker can craft malicious input that, when processed by the vulnerable Craft CMS application, results in the execution of arbitrary commands on the server.
• Payload Delivery: The attacker can deliver payloads through HTTP requests, exploiting the vulnerability to gain control over the server.

3. Affected Systems and Software Versions

Affected Versions:

• Craft CMS versions prior to 3.9.14, 4.13.2, and 5.5.2.

Systems:

• Any server running Craft CMS with the register_argc_argv setting enabled in the php.ini configuration file.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Disable register_argc_argv: Users unable to upgrade should disable the register_argc_argv setting in the php.ini configuration file to mitigate the issue.

Long-Term Mitigation:

• Upgrade Craft CMS: Users are advised to update to version 3.9.14, 4.13.2, or 5.5.2, which contain the necessary patches to address the vulnerability.

Additional Recommendations:

• Regular Patching: Ensure that all software, including Craft CMS and PHP, is regularly updated to the latest versions.
• Configuration Review: Periodically review and harden PHP configurations to minimize the attack surface.
• Monitoring and Logging: Implement robust monitoring and logging to detect and respond to any suspicious activities.

5. Impact on Cybersecurity Landscape

The discovery of this vulnerability highlights the importance of secure configuration management and regular software updates. The potential for RCE in a widely-used CMS like Craft CMS underscores the need for vigilant cybersecurity practices. Organizations must prioritize patch management and configuration hardening to protect against such critical vulnerabilities.

6. Technical Details for Security Professionals

Vulnerability Details:

• The vulnerability arises from the register_argc_argv setting in php.ini, which allows PHP scripts to access command-line arguments. This setting can be exploited to inject malicious code.
• The specific code injection vector is unspecified, but it likely involves manipulating input parameters to execute arbitrary commands.

Patch Information:

• The patches in versions 3.9.14, 4.13.2, and 5.5.2 address the vulnerability by sanitizing input and ensuring that command-line arguments are not processed in a way that allows code injection.

References:

• Patch Commit: GitHub Commit
• Vendor Advisory: GitHub Security Advisory
• Exploit Information: Exploit Details

Conclusion: CVE-2024-56145 is a critical vulnerability affecting Craft CMS users with specific PHP configurations. Immediate mitigation involves disabling the register_argc_argv setting, while long-term mitigation requires upgrading to patched versions. Organizations must prioritize secure configurations and regular updates to protect against such vulnerabilities.