CVE-2023-20265 : What You Need to Know

This CVE-2023-20265 article discusses a vulnerability identified in a specific subset of Cisco IP Phones that could potentially be exploited by an authenticated, remote attacker to execute a stored cross-site scripting (XSS) attack. The vulnerability arises from inadequate validation of user-supplied input, enabling an attacker to inject malicious HTML or script content and execute arbitrary code within the affected interface.

Understanding CVE-2023-20265

This section delves into the crucial aspects surrounding CVE-2023-20265, shedding light on its nature and potential implications.

What is CVE-2023-20265?

The CVE-2023-20265 vulnerability is centered around the web-based management interface of select Cisco IP Phones. It allows an authenticated attacker to carry out a stored cross-site scripting (XSS) attack by exploiting insufficient input validation, ultimately enabling the execution of arbitrary script code or access to sensitive information within the affected interface.

The Impact of CVE-2023-20265

The successful exploitation of CVE-2023-20265 could empower a malicious actor to execute arbitrary script code within the context of the targeted interface or access confidential browser-based data. To conduct an attack, the threat actor must possess valid credentials to access the web-based management interface of the compromised device.

Technical Details of CVE-2023-20265

This section provides a detailed breakdown of the vulnerability, highlighting key technical aspects related to CVE-2023-20265.

Vulnerability Description

The CVE-2023-20265 vulnerability lies within the web-based management interface of specific Cisco IP Phones, characterized by inadequate validation of user-supplied input. This flaw enables an authenticated attacker to launch a stored cross-site scripting (XSS) attack, potentially leading to the execution of arbitrary script code in the context of the affected interface.

Affected Systems and Versions

The vulnerability impacts Cisco IP Phones with Multiplatform Firmware versions 4.5, 4.6 MSR1, 4.7.1, 4.8.1, 4.8.1 SR1, 5.0.1, 5.1.1, and 5.1.2. Additionally, Cisco Session Initiation Protocol (SIP) Software versions 9.1(1), 9.2(1), 9.2(2), 9.3(1), 9.3(1)SR1, 9.3(1)SR2, 9.4(1), 9.4(1)SR1, and 9.4(1)SR2 are also vulnerable to this exploit.

Exploitation Mechanism

The exploitation of CVE-2023-20265 involves an attacker persuading a user of the affected interface to access a page containing malicious HTML or script content. By leveraging this vulnerability, the attacker can execute arbitrary script code in the context of the targeted interface or access sensitive information stored in the browser.

Mitigation and Prevention

In response to CVE-2023-20265, it is crucial to implement effective mitigation strategies and adopt proactive security measures to prevent potential exploitation.

Immediate Steps to Take

Cisco recommends applying the necessary security updates and patches provided to address the vulnerability promptly.
Users are advised to be cautious while interacting with web-based management interfaces and avoid accessing potentially malicious content.

Long-Term Security Practices

Regularly monitor for security advisories and updates from Cisco to stay informed about potential threats and vulnerabilities.
Conduct security awareness training to educate users on recognizing and mitigating phishing attacks and malicious content.

Patching and Updates

Timely installation of security patches released by Cisco is essential to remediate the CVE-2023-20265 vulnerability and enhance overall system security.
Organizations should establish robust patch management processes to ensure the prompt deployment of critical updates and patches across their network infrastructure.