CVE-2020-13317 : Vulnerability Insights and Analysis

A vulnerability in GitLab versions before 13.1.10, 13.2.8, and 13.3.4 allowed maintainers to delete repositories through an insufficient check in the GraphQL API.

Understanding CVE-2020-13317

This CVE involves improper access control in GitLab, impacting versions prior to 13.1.10, 13.2.8, and 13.3.4.

What is CVE-2020-13317?

The vulnerability in GitLab versions before 13.1.10, 13.2.8, and 13.3.4 allowed maintainers to delete repositories due to an insufficient check in the GraphQL API.

The Impact of CVE-2020-13317

CVSS Score: 6.5 (Medium Severity)
Attack Vector: Network
Integrity Impact: High
Availability Impact: High
Privileges Required: High
This vulnerability could be exploited by attackers to delete repositories, potentially causing data loss and disruption.

Technical Details of CVE-2020-13317

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability stemmed from an insufficient check in the GraphQL API, enabling maintainers to delete repositories.

Affected Systems and Versions

Affected Product: GitLab
Affected Versions:
=12.6, <13.1.10

=13.2, <13.2.8

=13.3, <13.3.4

Exploitation Mechanism

Attackers with high privileges could exploit this vulnerability through the GraphQL API to delete repositories.

Mitigation and Prevention

To address CVE-2020-13317, follow these mitigation and prevention strategies.

Immediate Steps to Take

Update GitLab to versions 13.1.10, 13.2.8, or 13.3.4 to mitigate the vulnerability.
Monitor repository deletions for any unauthorized activities.

Long-Term Security Practices

Regularly review and update access controls within GitLab.
Educate maintainers on secure repository management practices.

Patching and Updates

Apply security patches promptly to ensure protection against known vulnerabilities.