CVE-2020-13272 : Vulnerability Insights and Analysis
Learn about CVE-2020-13272, an improper authorization vulnerability in GitLab versions 12.3 to 13.0.1 allowing unauthorized users to exploit OAuth authorization code flow. Find mitigation steps here.
OAuth flow missing verification checks in GitLab versions 12.3 to 13.0.1 allows unauthorized users to exploit OAuth authorization code flow.
Understanding CVE-2020-13272
This CVE involves an improper authorization vulnerability in GitLab, impacting versions 12.3 to 13.0.1.
What is CVE-2020-13272?
The vulnerability allows unverified users to utilize the OAuth authorization code flow due to missing verification checks in GitLab versions 12.3 to 13.0.1.
The Impact of CVE-2020-13272
- CVSS Base Score: 7.5 (High)
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: Low
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
Technical Details of CVE-2020-13272
This section provides more technical insights into the vulnerability.
Vulnerability Description
The OAuth flow missing verification checks in GitLab versions 12.3 to 13.0.1 allows unverified users to exploit the OAuth authorization code flow.
Affected Systems and Versions
- Affected Product: GitLab
- Affected Versions:
=12.3, <12.9.8
=12.10, <12.10.7
=13.0, <13.0.1
Exploitation Mechanism
Unauthorized users can leverage the OAuth authorization code flow due to the absence of verification checks in GitLab versions 12.3 to 13.0.1.
Mitigation and Prevention
Protect your systems from this vulnerability with the following steps.
Immediate Steps to Take
- Upgrade GitLab to a version that includes a fix for this vulnerability.
- Monitor OAuth authorization activities for suspicious behavior.
Long-Term Security Practices
- Regularly review and update access control policies.
- Conduct security training for users on OAuth best practices.
Patching and Updates
- Apply security patches promptly to ensure protection against known vulnerabilities.