CVE-2023-2164 : Exploit Details and Defense Strategies

An issue has been discovered in GitLab that affects various versions, allowing an attacker to trigger a stored XSS vulnerability. This CVE was published by GitLab on August 1, 2023.

Understanding CVE-2023-2164

This vulnerability in GitLab allows an attacker to exploit a stored Cross-site Scripting (XSS) vulnerability by manipulating a crafted URL in the WebIDE beta.

What is CVE-2023-2164?

CVE-2023-2164 is related to an improper neutralization of input during web page generation, specifically targeting the Cross-site Scripting (XSS) vulnerability. This can lead to malicious code execution and potential data theft.

The Impact of CVE-2023-2164

The impact of CVE-2023-2164 includes the risk of unauthorized access, data manipulation, and potential compromise of sensitive information. Attackers can exploit this vulnerability through user interaction with a malicious URL, leading to harmful consequences.

Technical Details of CVE-2023-2164

The vulnerability description revolves around the improper neutralization of input during web page generation, specifically focused on Cross-site Scripting (XSS). Affected systems include GitLab versions 15.9 to 16.2.2.

Vulnerability Description

The vulnerability allows attackers to execute malicious scripts on the user's browser, leading to unauthorized access and data theft.

Affected Systems and Versions

GitLab versions 15.9 to 16.2.2 are impacted by this vulnerability, with specific versions detailed where the issue exists.

Exploitation Mechanism

By manipulating a crafted URL in the WebIDE beta, attackers can exploit the stored XSS vulnerability, potentially compromising user data and system integrity.

Mitigation and Prevention

To address CVE-2023-2164, immediate steps should be taken to secure GitLab instances and prevent unauthorized access.

Immediate Steps to Take

Users are advised to upgrade to GitLab versions 16.2.2, 16.1.3, 16.0.8, or above to mitigate the risk of exploitation.

Long-Term Security Practices

Implementing secure coding practices, regular security assessments, and user awareness training can help in preventing similar vulnerabilities in the future.

Patching and Updates

Regularly monitoring GitLab security advisories and promptly applying patches and updates can help in safeguarding the system against known vulnerabilities.