CVE-2022-28803 : Security Advisory and Response

SilverStripe Framework through 2022-04-07 is susceptible to Stored Cross-Site Scripting (XSS) via XMLHttpRequest (XHR) in javascript link tags.

Understanding CVE-2022-28803

This CVE identifies a vulnerability in the SilverStripe Framework that allows an attacker to conduct Stored XSS attacks through XMLHttpRequest (XHR) in javascript link tags.

What is CVE-2022-28803?

The CVE-2022-28803 vulnerability in the SilverStripe Framework enables malicious actors to execute Stored Cross-Site Scripting (XSS) attacks by injecting code into javascript link tags using XMLHttpRequest (XHR).

The Impact of CVE-2022-28803

If exploited, this vulnerability can lead to unauthorized access, data theft, and potential compromise of sensitive information stored within the SilverStripe Framework, posing a significant risk to affected systems.

Technical Details of CVE-2022-28803

This section delves into specific technical aspects of the CVE, including its description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

The vulnerability allows for Stored Cross-Site Scripting (XSS) attacks where malicious scripts are injected into javascript link tags added via XMLHttpRequest (XHR) in the SilverStripe Framework.

Affected Systems and Versions

All instances of SilverStripe Framework through 2022-04-07 are impacted by this vulnerability, making them susceptible to exploit.

Exploitation Mechanism

Attackers can exploit this vulnerability by inserting malicious code through XMLHttpRequest (XHR) in javascript link tags, allowing them to execute arbitrary scripts within the context of a user's session.

Mitigation and Prevention

To address and mitigate the risks associated with CVE-2022-28803, immediate actions and long-term security practices are crucial.

Immediate Steps to Take

Update the SilverStripe Framework to the latest version that contains a patch for the vulnerability.
Implement input validation and output encoding to prevent XSS vulnerabilities.
Regularly monitor and audit the application for any signs of unauthorized script injections.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and remediate vulnerabilities proactively.
Stay informed about security updates and patches released by the SilverStripe team.
Educate developers and users about secure coding practices and the risks associated with XSS vulnerabilities.

Patching and Updates

Apply patches and updates provided by SilverStripe promptly to ensure that the vulnerability is addressed effectively and that your system is protected against potential exploits.