CVE-2021-22225 : What You Need to Know
Discover the details of CVE-2021-22225, a vulnerability in GitLab versions 13.11 and above, enabling cross-site scripting attacks. Learn about its impact, affected systems, and mitigation steps.
A stored cross-site scripting vulnerability has been identified in GitLab versions 13.11 and above. This CVE-2021-22225 allows attackers to exploit Markdown input sanitization vulnerabilities, potentially leading to security risks.
Understanding CVE-2021-22225
This section provides insights into the nature of the vulnerability and its impact on affected systems.
What is CVE-2021-22225?
Insufficient input sanitization in GitLab's Markdown feature from version 13.11 onwards permits a threat actor to execute a stored cross-site scripting attack by using specially-crafted Markdown content.
The Impact of CVE-2021-22225
With a CVSS base score of 4.7, this medium severity vulnerability poses a risk of unauthorized data manipulation and content injection, affecting the confidentiality and integrity of vulnerable systems.
Technical Details of CVE-2021-22225
Explore the specifics of the vulnerability to understand its implications and how to mitigate it.
Vulnerability Description
The vulnerability arises from inadequate input sanitization in GitLab, allowing an attacker to inject malicious scripts through specially-formatted Markdown content.
Affected Systems and Versions
GitLab versions ranging from 13.11.3 to 13.11.6, 13.12 to 13.12.6, and 14.0 to 14.0.2 are susceptible to this exploit.
Exploitation Mechanism
By leveraging the markdown feature in affected GitLab versions, threat actors can craft malicious Markdown content to execute cross-site scripting attacks.
Mitigation and Prevention
Learn how to address and prevent the CVE-2021-22225 vulnerability effectively.
Immediate Steps to Take
GitLab users are advised to update to patched versions as soon as possible to mitigate the risk of exploitation.
Long-Term Security Practices
Implement secure coding practices, regular security audits, and user input validation to enhance overall system security and reduce the likelihood of future vulnerabilities.
Patching and Updates
Stay informed about GitLab security advisories and promptly apply recommended patches and updates to safeguard against potential threats.