CVE-2023-42802 : Vulnerability Insights and Analysis

A critical vulnerability has been identified in GLPI software versions prior to 10.0.10, potentially allowing for execution of malicious PHP scripts. Read on to understand the impact and mitigation steps for CVE-2023-42802.

Understanding CVE-2023-42802

GLPI is a free asset and IT management software that was found to be vulnerable to unallowed PHP script execution between versions 10.0.7 and 10.0.10.

What is CVE-2023-42802?

Starting from version 10.0.7 up to version 10.0.10, an unverified object instantiation in GLPI permits the upload of malicious PHP files to unauthorized directories. Subsequently, depending on the web server configuration and system libraries, these malicious PHP files can be executed via a web server request.

The Impact of CVE-2023-42802

The impact of this vulnerability is critical, with a CVSS base score of 10.0, indicating a high risk to confidentiality, integrity, and availability. Attackers can exploit this flaw to execute unauthorized PHP scripts on the affected system.

Technical Details of CVE-2023-42802

Understanding the vulnerability description, affected systems, and the exploitation mechanism is crucial to strengthening system security.

Vulnerability Description

The unallowed PHP script execution vulnerability in GLPI before version 10.0.10 allows for uploading and running malicious PHP files through a web server request. The issue arises from an unverified object instantiation in the software.

Affected Systems and Versions

GLPI versions from 10.0.7 to 10.0.10 are affected by this vulnerability. Systems running these versions are at risk of unauthorized PHP script execution.

Exploitation Mechanism

By leveraging the unverified object instantiation, threat actors can upload malicious PHP files to specific directories within GLPI. Upon successful upload, an attacker can execute these files through a web server request.

Mitigation and Prevention

Take immediate steps to secure your systems and follow long-term security best practices to prevent such vulnerabilities in the future.

Immediate Steps to Take

To mitigate the CVE-2023-42802 vulnerability, update GLPI to version 10.0.10. As a temporary workaround, restrict write access on

/ajax

and

/front

files accessible to the web server.

Long-Term Security Practices

Incorporate robust security measures such as regular software updates, access controls, and code reviews to strengthen the security posture of your IT infrastructure.

Patching and Updates

Ensure timely application of security patches and updates to mitigate existing vulnerabilities and safeguard against potential threats.