CVE-2023-33977 : Vulnerability Insights and Analysis

Understanding CVE-2023-33977

Kiwi TCMS, an open-source test management system, was found to be vulnerable to stored cross-site scripting (XSS) attacks via unrestricted file uploads. This vulnerability could allow attackers to execute arbitrary JavaScript in the browser, posing a significant security risk.

What is CVE-2023-33977?

Kiwi TCMS allows users to upload attachments to test plans and cases. However, earlier versions lacked robust upload validators, enabling attackers to bypass security checks and upload malicious files. Additionally, certain configurations in Nginx could strip headers, compromising the security features of Kiwi TCMS.

The Impact of CVE-2023-33977

The impact of this vulnerability is rated as high, with a CVSS base score of 8.1. It poses a risk to data confidentiality, integrity, and can be exploited without any special privileges, making it a critical issue for organizations using Kiwi TCMS.

Technical Details of CVE-2023-33977

Kiwi TCMS versions prior to 12.4 are affected by this vulnerability. Attackers can exploit this issue over the network, requiring user interaction to execute malicious scripts. Immediate action is necessary to mitigate the risks associated with this CVE.

Vulnerability Description

The vulnerability stems from inadequate upload validation mechanisms and Nginx configurations that could lead to XSS attacks via file uploads. Upgrading to version 12.4 or implementing specific proxy configurations is crucial to address this issue.

Affected Systems and Versions

Kiwi TCMS versions below 12.4 are vulnerable to stored XSS attacks through unrestricted file uploads. Organizations using affected versions are advised to update to the latest release to prevent exploitation.

Exploitation Mechanism

Attackers can exploit this vulnerability by uploading a malicious file that executes arbitrary JavaScript in the browser. The lack of stringent upload validation checks and certain Nginx configurations exacerbates the risk posed by this CVE.

Mitigation and Prevention

Organizations are recommended to take immediate steps to secure their Kiwi TCMS deployment and prevent potential exploitation of this vulnerability.

Immediate Steps to Take

Upgrade Kiwi TCMS to version 12.4 or newer to mitigate the risk of XSS attacks through file uploads.
Ensure that header values are maintained when using Nginx as a reverse proxy to prevent bypassing security mechanisms.

Long-Term Security Practices

Regularly monitor for security advisories related to Kiwi TCMS and promptly apply patches to address known vulnerabilities.
Conduct security assessments to identify and remediate potential security gaps within the system.

Patching and Updates

Stay informed about security best practices and updates provided by Kiwi TCMS. Timely patching and system updates are essential to safeguard against emerging threats and maintain the integrity of your test management system.