CVE-2023-38423 : Security Advisory and Response

A detailed overview of the BIG-IP Configuration utility vulnerability impacting F5 products.

Understanding CVE-2023-38423

This CVE record highlights a cross-site scripting (XSS) vulnerability found in the BIG-IP Configuration utility by F5, allowing malicious actors to execute JavaScript within the user's context.

What is CVE-2023-38423?

CVE-2023-38423 refers to a critical XSS flaw in an undisclosed page of F5's BIG-IP Configuration utility, enabling attackers to run arbitrary JavaScript in the victim's browser.

The Impact of CVE-2023-38423

This vulnerability can be exploited by threat actors to perform various malicious activities such as stealing sensitive information, session hijacking, and crafting sophisticated phishing attacks.

Technical Details of CVE-2023-38423

A deeper dive into the technical aspects of the CVE.

Vulnerability Description

The XSS vulnerability allows attackers to inject and execute malicious scripts in the context of authenticated users, posing a significant security risk to affected systems.

Affected Systems and Versions

The vulnerability affects F5's BIG-IP versions 13.1.0 to 17.1.0, with specific impacted versions detailed below:

BIG-IP 17.1.0 up to 17.1.0.2
BIG-IP 16.1.0 up to 16.1.3.5
BIG-IP 15.1.0 up to 15.1.9.1
BIG-IP 14.1.0 up to 14.1.5.5

Exploitation Mechanism

The exploit requires network access and user interaction, leveraging the vulnerability to initiate XSS attacks remotely.

Mitigation and Prevention

Effective strategies to address and safeguard against CVE-2023-38423.

Immediate Steps to Take

Ensure to update the affected F5 BIG-IP instances to versions above the specified vulnerable releases. Implement web application firewalls and input validation mechanisms to mitigate XSS risks.

Long-Term Security Practices

Regularly monitor security advisories from F5, maintain up-to-date patching practices, and conduct periodic security assessments to detect and remediate similar vulnerabilities.

Patching and Updates

F5 has released patches and updates to address the XSS vulnerability in the BIG-IP Configuration utility. It is recommended to apply these patches promptly to secure the affected systems and prevent exploitation.