CVE-2020-13323 : Security Advisory and Response
Learn about CVE-2020-13323, a high-severity vulnerability in GitLab versions prior to 13.1 allowing unauthorized access to private merge requests. Find mitigation steps and best practices here.
A vulnerability in GitLab versions prior to 13.1 could allow unauthorized access to private merge requests.
Understanding CVE-2020-13323
This CVE identifies an improper authorization issue in GitLab that could lead to the exposure of private merge requests.
What is CVE-2020-13323?
The vulnerability in GitLab versions before 13.1 enables the reading of private merge requests under specific conditions via Todos.
The Impact of CVE-2020-13323
The vulnerability has a CVSS base score of 7.7, indicating a high severity level with a significant impact on confidentiality.
Technical Details of CVE-2020-13323
This section delves into the technical aspects of the CVE.
Vulnerability Description
The vulnerability allows unauthorized access to private merge requests in GitLab versions prior to 13.1.
Affected Systems and Versions
- Affected versions include GitLab >=8.5, <12.10.13, >=13.0, <13.0.8, and >=13.1, <13.1.2.
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: Low
- User Interaction: None
- Scope: Changed
- Confidentiality Impact: High
- Integrity Impact: None
- Availability Impact: None
Mitigation and Prevention
Steps to address and prevent the vulnerability.
Immediate Steps to Take
- Upgrade GitLab to version 13.1 or newer to mitigate the vulnerability.
- Monitor and restrict access to private merge requests.
Long-Term Security Practices
- Regularly review and update access controls within GitLab.
- Conduct security training for users to ensure proper handling of sensitive information.
Patching and Updates
- Apply security patches provided by GitLab promptly to address known vulnerabilities.