CVE-2023-28851 Explained : Impact and Mitigation

A Silverstripe Form Capture vulnerability to Stored Cross-Site Scripting has been identified as CVE-2023-28851. This CVE poses a risk for systems running affected versions of the Silverstripe Form Capture software.

Understanding CVE-2023-28851

Silverstripe Form Capture allows users to capture simple Silverstripe forms and provides an admin interface. The vulnerability in versions 0.2.0 to 1.0.2, 1.1.0, 2.2.5, and 3.1.1 potentially enables attackers to execute a Cross-Site Scripting attack due to improper escaping of stored form submissions.

What is CVE-2023-28851?

The CVE-2023-28851 vulnerability in Silverstripe Form Capture arises from inadequate sanitization of input data, leading to the possibility of malicious script execution within the context of a user's session.

The Impact of CVE-2023-28851

Exploitation of this vulnerability could result in attackers injecting and executing malicious scripts within the application, potentially compromising user data, stealing sensitive information, or performing unauthorized actions on behalf of legitimate users.

Technical Details of CVE-2023-28851

The vulnerability is classified with a CVSSv3 base score of 6.1, indicating a medium risk level. It requires user interaction for exploitation and has a low impact on confidentiality and integrity. The attack vector is network-based with low complexity.

Vulnerability Description

The vulnerability stems from insufficient neutralization of script-related HTML tags during web page generation, allowing attackers to inject and execute malicious scripts.

Affected Systems and Versions

Versions affected by CVE-2023-28851 include Silverstripe Form Capture versions >= 0.2.0 and < 1.0.2, >= 2.0.0 and < 2.2.5, and >= 3.0.0 and < 3.1.1.

Exploitation Mechanism

Attackers can exploit this vulnerability by submitting crafted data that includes malicious scripts, which are then executed in the context of a legitimate user's session.

Mitigation and Prevention

To address CVE-2023-28851 and enhance system security, immediate actions and long-term security practices should be implemented.

Immediate Steps to Take

Update the Silverstripe Form Capture software to patched versions 1.0.2, 1.1.0, 2.2.5, or 3.1.1 to mitigate the vulnerability.
Educate users to be cautious when submitting data to forms and reinforce safe browsing practices.

Long-Term Security Practices

Regularly monitor and apply security updates to all software components, including third-party plugins.
Conduct regular security audits and penetration testing to identify and address vulnerabilities proactively.

Patching and Updates

Keep track of security advisories from the Silverstripe Form Capture software vendor and apply patches promptly to ensure the ongoing security of the system.