CVE-2020-13277 : Vulnerability Insights and Analysis

An authorization issue in the mirroring logic allowed read access to private repositories in GitLab CE/EE 10.6 and later through 13.0.5.

Understanding CVE-2020-13277

This CVE involves an authorization vulnerability in GitLab that could potentially expose private repository data.

What is CVE-2020-13277?

CVE-2020-13277 is an authorization issue in GitLab that enables unauthorized read access to private repositories in versions 10.6 through 13.0.5.

The Impact of CVE-2020-13277

The vulnerability poses a medium-severity risk with high confidentiality impact, allowing unauthorized users to view sensitive repository data.

Technical Details of CVE-2020-13277

This section provides in-depth technical insights into the vulnerability.

Vulnerability Description

The flaw in GitLab's mirroring logic permits unauthorized users to read private repository content, compromising data confidentiality.

Affected Systems and Versions

Affected Versions: GitLab CE/EE >=10.6, <12.9.10, >=12.10, <12.10.11, >=13.0, <13.0.6

Exploitation Mechanism

Attack Complexity: High
Attack Vector: Network
Confidentiality Impact: High
Privileges Required: Low
Scope: Changed

Mitigation and Prevention

Protect your systems from CVE-2020-13277 with these mitigation strategies.

Immediate Steps to Take

Upgrade GitLab to a patched version immediately.
Monitor repository access for any unauthorized activity.
Review and restrict user permissions to sensitive data.

Long-Term Security Practices

Regularly audit and review access controls within GitLab.
Educate users on secure repository management practices.

Patching and Updates

Apply security patches promptly to ensure protection against known vulnerabilities.