CVE-2023-20096 Explained : Impact and Mitigation

This CVE-2023-20096 relates to a stored cross-site scripting vulnerability in Cisco Unified Contact Center Express, allowing an authenticated, remote attacker to execute malicious scripts within the context of other users via the web-based management interface.

Understanding CVE-2023-20096

This section delves into the details of the vulnerability, its impact, technical aspects, and ways to mitigate and prevent exploitation.

What is CVE-2023-20096?

CVE-2023-20096 is a vulnerability found in the web-based management interface of Cisco Unified Contact Center Express (Unified CCX). It stems from inadequate validation of user-supplied data, allowing an attacker to insert malicious scripts through input fields within the interface.

The Impact of CVE-2023-20096

The impact of this vulnerability is significant as it enables attackers to conduct stored cross-site scripting attacks. Successful exploitation can result in the execution of scripts within the interface, potentially compromising the security and integrity of user interactions.

Technical Details of CVE-2023-20096

Understanding the technical aspects of the vulnerability helps in comprehending its severity and potential risks associated with it.

Vulnerability Description

The stored cross-site scripting vulnerability in Cisco Unified Contact Center Express arises from a lack of proper input validation for user-supplied data. Attackers can exploit this flaw by injecting crafted text into various input fields, facilitating the execution of malicious scripts.

Affected Systems and Versions

The affected system by CVE-2023-20096 is specifically the Cisco Unified Contact Center Express. The versions impacted by this vulnerability include the latest ones, marked as "n/a".

Exploitation Mechanism

Exploiting CVE-2023-20096 requires the attacker to be authenticated and remote. By entering crafted text into input fields within the web-based management interface, the attacker can execute stored cross-site scripting attacks.

Mitigation and Prevention

Taking immediate steps to mitigate the risks posed by CVE-2023-20096 is crucial to safeguard systems and sensitive data.

Immediate Steps to Take

Implement input validation mechanisms to prevent malicious script insertion.
Regularly monitor and audit user interactions within the web-based management interface.
Educate users on safe browsing practices to minimize the risk of XSS attacks.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify vulnerabilities proactively.
Keep systems and applications up to date with the latest security patches and updates.
Utilize web application firewalls to detect and block malicious traffic targeting XSS vulnerabilities.

Patching and Updates

Cisco has likely released patches or updates to address CVE-2023-20096. It is recommended to apply these patches promptly to mitigate the risk of exploitation and enhance the security posture of the affected systems.