CVE-2023-22363 : Security Advisory and Response

This CVE record was published on July 24, 2023, by Gallagher. The vulnerability is titled "Access Zone stack overflow" and is related to a stack-based buffer overflow in the Command Centre Server, impacting versions of Command Centre prior to vEL8.80.1192.

Understanding CVE-2023-22363

This section will delve into the details of CVE-2023-22363, explaining the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2023-22363?

CVE-2023-22363 involves a stack-based buffer overflow in the Command Centre Server, which can be exploited by an attacker to trigger a denial of service attack by assigning cardholders to an Access Group within the affected versions of the Command Centre software.

The Impact of CVE-2023-22363

The impact of this vulnerability, as per the CVSS v3.1 metrics, is rated as Medium with a base score of 6.5. The availability impact is categorized as High, indicating the potential for significant disruption when exploited. However, the confidentiality and integrity impacts are assessed as none.

Technical Details of CVE-2023-22363

In this section, we will explore the vulnerability description, affected systems and versions, as well as the exploitation mechanism associated with CVE-2023-22363.

Vulnerability Description

The vulnerability stems from a stack-based buffer overflow in the Command Centre Server, enabling attackers to initiate denial of service attacks through the assignment of cardholders to an Access Group.

Affected Systems and Versions

The affected system is the Command Centre software, specifically version vEL8.80, prior to vEL8.80.1192 (MR2). Users operating versions within this range are susceptible to the stack overflow vulnerability.

Exploitation Mechanism

To exploit CVE-2023-22363, attackers need to leverage the buffer overflow in the Command Centre Server by assigning cardholders to an Access Group, ultimately leading to a denial of service attack.

Mitigation and Prevention

This section focuses on recommended steps to mitigate the risks posed by CVE-2023-22363 and prevent potential exploitation.

Immediate Steps to Take

Users and administrators are advised to apply security patches provided by Gallagher promptly. Additionally, access controls and monitoring mechanisms should be enhanced to detect and prevent unauthorized activities.

Long-Term Security Practices

In the long term, organizations should prioritize security awareness among users, conduct regular security audits, and invest in robust cybersecurity measures to safeguard against similar vulnerabilities.

Patching and Updates

Regularly updating the Command Centre software to versions beyond vEL8.80.1192 (MR2) is crucial to eliminate the vulnerability and enhance the overall security posture of the system. Patch management procedures should be followed diligently to stay protected against emerging threats.