CVE-2020-13298 : Security Advisory and Response

A vulnerability in GitLab versions before 13.1.10, 13.2.8, and 13.3.4 allowed limited files disclosure through improper validation of parameters.

Understanding CVE-2020-13298

This CVE involves an information exposure vulnerability in GitLab.

What is CVE-2020-13298?

The vulnerability in GitLab versions prior to 13.1.10, 13.2.8, and 13.3.4 allowed unauthorized disclosure of limited files due to inadequate parameter validation.

The Impact of CVE-2020-13298

CVSS Base Score: 7.2 (High Severity)
Attack Vector: Network
Attack Complexity: Low
Confidentiality Impact: Low
Integrity Impact: Low
Privileges Required: None
Scope: Changed
User Interaction: None

Technical Details of CVE-2020-13298

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability stemmed from the Conan package upload feature's failure to properly validate input parameters, leading to the exposure of limited files.

Affected Systems and Versions

Affected Product: GitLab
Affected Versions:
GitLab >=13.3, <13.3.4
GitLab >=13.2, <13.2.8
GitLab >=13.1, <13.1.10

Exploitation Mechanism

The vulnerability could be exploited by an attacker sending specially crafted requests to the affected GitLab versions, triggering the disclosure of restricted files.

Mitigation and Prevention

Protect your systems from CVE-2020-13298 with these mitigation strategies.

Immediate Steps to Take

Update GitLab to versions 13.1.10, 13.2.8, or 13.3.4 or later to eliminate the vulnerability.
Monitor for any unauthorized access or file disclosures.

Long-Term Security Practices

Regularly audit and review the security configurations of your GitLab instance.
Educate users on secure coding practices to prevent similar vulnerabilities.

Patching and Updates

Stay informed about security patches and updates released by GitLab to address vulnerabilities promptly.