CVE-2022-1100 : What You Need to Know
Get insights into CVE-2022-1100 affecting GitLab versions <14.9.2. Learn the impact, technical details, affected systems, and mitigation steps for this DOS vulnerability.
A detailed article outlining the CVE-2022-1100 vulnerability found in GitLab, impacting versions prior to 14.7.7, 14.8.5, and 14.9.2.
Understanding CVE-2022-1100
This section provides insights into the nature of the vulnerability and its potential impact.
What is CVE-2022-1100?
A Denial of Service (DOS) vulnerability affecting GitLab CE/EE versions from 13.1 to 14.7.7, 14.8.0 to 14.8.5, and 14.9.0 to 14.9.2. The issue stemmed from a regex check in the API for updating an asset as a link, leading to excessive CPU usage due to backtracking.
The Impact of CVE-2022-1100
With a CVSS base score of 4.3 (Medium severity), the vulnerability could be exploited by attackers to cause high CPU consumption, potentially disrupting the service availability.
Technical Details of CVE-2022-1100
Delve into the specifics of the vulnerability, including affected systems, exploitation mechanisms, and more.
Vulnerability Description
The vulnerability arises from improper input validation within GitLab, allowing malicious actors to trigger a DOS condition by exploiting the link update API.
Affected Systems and Versions
GitLab versions ranging from 13.1 to 14.9.2 are affected, including versions 14.7.7, 14.8.5, and 14.9.0, creating a wide attack surface for potential exploit.
Exploitation Mechanism
By supplying specific values, attackers can trigger the regex check within the API, leading to a large number of backtracks and subsequently causing a spike in CPU utilization.
Mitigation and Prevention
Explore the steps recommended to mitigate the impact of CVE-2022-1100 and prevent similar vulnerabilities in the future.
Immediate Steps to Take
Users are advised to update GitLab instances to versions 14.7.7, 14.8.5, and 14.9.2 or newer to eliminate the vulnerability and enhance system security.
Long-Term Security Practices
Implementing robust input validation mechanisms and regular security audits can strengthen the overall security posture of GitLab instances, reducing the risk of similar vulnerabilities.
Patching and Updates
Stay informed about security patches and updates provided by GitLab to address known vulnerabilities promptly and ensure system integrity.