CVE-2020-13358 : Security Advisory and Response

A vulnerability in the internal Kubernetes agent API in GitLab CE/EE versions 13.3 and above allows unauthorized access to private projects. Affected versions include >=13.4, <13.4.5, >=13.3, <13.3.9, >=13.5, and <13.5.2.

Understanding CVE-2020-13358

This CVE involves improper authorization in GitLab, potentially leading to unauthorized access to private projects.

What is CVE-2020-13358?

This CVE identifies a vulnerability in GitLab CE/EE versions 13.3 and above that could permit unauthorized access to private projects through the internal Kubernetes agent API.

The Impact of CVE-2020-13358

The vulnerability could result in unauthorized users gaining access to private projects within affected GitLab versions.

Technical Details of CVE-2020-13358

The technical aspects of this CVE provide insight into the vulnerability's nature and potential exploitation.

Vulnerability Description

The vulnerability allows unauthorized access to private projects due to improper authorization in GitLab versions 13.3 and above.

Affected Systems and Versions

Product: GitLab CE/EE
Affected Versions: >=13.4, <13.4.5, >=13.3, <13.3.9, >=13.5, <13.5.2

Exploitation Mechanism

Attack Complexity: High
Attack Vector: Local
Confidentiality Impact: High
Privileges Required: Low
User Interaction: None
Vector String: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Mitigation and Prevention

Understanding how to mitigate and prevent the exploitation of this vulnerability is crucial for maintaining system security.

Immediate Steps to Take

Update GitLab CE/EE to a non-vulnerable version.
Monitor access to private projects for any unauthorized activity.

Long-Term Security Practices

Regularly review and update access controls within GitLab.
Conduct security audits to identify and address any authorization issues.

Patching and Updates

Apply patches provided by GitLab promptly to address the vulnerability and enhance system security.