CVE-2020-13351 Explained : Impact and Mitigation

GitLab CE/EE versions 13.0 to 13.5.2 are affected by insufficient permission checks in the scheduled pipeline API, allowing attackers to access sensitive information.

Understanding CVE-2020-13351

This CVE involves an authorization bypass vulnerability in GitLab CE/EE versions 13.0 to 13.5.2, enabling unauthorized access to scheduled pipeline data.

What is CVE-2020-13351?

The vulnerability allows attackers to read variable names and values for scheduled pipelines on projects visible to them.

The Impact of CVE-2020-13351

CVSS Score: 6.5 (Medium)
Confidentiality Impact: High
Attack Vector: Network
Privileges Required: Low
Scope: Unchanged
Exploiting this vulnerability could lead to unauthorized access to sensitive data.

Technical Details of CVE-2020-13351

The technical aspects of the vulnerability in GitLab CE/EE versions 13.0 to 13.5.2.

Vulnerability Description

Insufficient permission checks in the scheduled pipeline API allow unauthorized access to variable names and values.

Affected Systems and Versions

Affected Versions: >=13.0, <13.3.9, >=13.4.0, <13.4.5, >=13.5.0, <13.5.2
GitLab CE/EE versions 13.0 to 13.5.2 are impacted by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability to view sensitive information in scheduled pipelines.

Mitigation and Prevention

Protecting systems from CVE-2020-13351 and enhancing security measures.

Immediate Steps to Take

Update GitLab CE/EE to a patched version.
Monitor for any unauthorized access to scheduled pipeline data.

Long-Term Security Practices

Regularly review and update access control policies.
Conduct security audits to identify and address similar vulnerabilities.

Patching and Updates

Apply security patches provided by GitLab promptly to mitigate the vulnerability.