CVE-2023-24477 : Vulnerability Insights and Analysis

This CVE-2023-24477 was published on August 9, 2023, by Nozomi Networks. It highlights a vulnerability in Guardian/CMC versions before 22.6.2 that could allow an authenticated local attacker to gain access to the original user's session under specific conditions, particularly involving the Chrome web browser.

Understanding CVE-2023-24477

This vulnerability poses a risk of session fixation wherein user sessions are not completely invalidated upon logout in certain scenarios, potentially leading to unauthorized access by malicious actors.

What is CVE-2023-24477?

The CVE-2023-24477 vulnerability affects Guardian and CMC products by Nozomi Networks, impacting versions prior to 22.6.2. It stems from a failure to properly invalidate user sessions, enabling attackers to exploit the flaw and access active user sessions.

The Impact of CVE-2023-24477

The impact of CVE-2023-24477, categorized under CAPEC-61 Session Fixation, could result in unauthorized access to sensitive user sessions, compromising data integrity and system security.

Technical Details of CVE-2023-24477

This vulnerability is rated with a CVSSv3.1 base score of 5, denoting a medium severity level with a high attack complexity and requiring user interaction. The attack vector is network-based, with low impacts on confidentiality, integrity, and availability.

Vulnerability Description

The flaw in Guardian/CMC versions before 22.6.2 allows authenticated local attackers to exploit session fixation, potentially accessing user sessions post-logout.

Affected Systems and Versions

Guardian/CMC versions prior to 22.6.2 are vulnerable to this session fixation issue, necessitating immediate attention and remediation.

Exploitation Mechanism

The vulnerability leverages flawed session management, particularly failing to invalidate user sessions upon logout, creating an opportunity for attackers to hijack active sessions.

Mitigation and Prevention

To address CVE-2023-24477 and mitigate its impact, users and organizations should take immediate action to secure their systems and prevent unauthorized access.

Immediate Steps to Take

Adopting security best practices, including closing the browser after logging out, can help mitigate the risk of session fixation and unauthorized access.

Long-Term Security Practices

Implementing robust session management protocols, regular security audits, and user awareness training can enhance long-term security posture and prevent similar vulnerabilities.

Patching and Updates

The recommended solution for CVE-2023-24477 is to upgrade to Guardian/CMC version 22.6.2 or later, which contains patches and fixes to address the session fixation vulnerability. Prioritizing timely updates and patch management is crucial to stay protected against emerging threats.