CVE-2020-11649 : Exploit Details and Defense Strategies

An issue was discovered in GitLab CE and EE 8.15 through 12.9.2 where members of a group could still have access after the group is deleted.

Understanding CVE-2020-11649

This CVE highlights a security vulnerability in GitLab versions 8.15 through 12.9.2 that allows group members to retain access even after the group is deleted.

What is CVE-2020-11649?

CVE-2020-11649 is a vulnerability in GitLab CE and EE versions 8.15 through 12.9.2 that enables group members to maintain access privileges post group deletion.

The Impact of CVE-2020-11649

The vulnerability poses a security risk as unauthorized users can retain access to sensitive information even after the group they belong to is deleted.

Technical Details of CVE-2020-11649

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

Vulnerability Description

The issue allows group members in GitLab to persist with access rights following the deletion of the group, potentially leading to unauthorized access.

Affected Systems and Versions

Product: GitLab CE and EE
Versions: 8.15 through 12.9.2

Exploitation Mechanism

The vulnerability can be exploited by group members to maintain access privileges by leveraging the flaw in the group deletion process.

Mitigation and Prevention

Protect your systems from CVE-2020-11649 with the following steps:

Immediate Steps to Take

Update GitLab to a patched version that addresses the vulnerability.
Review and revoke access rights for group members to mitigate risks.

Long-Term Security Practices

Regularly review and update access controls within GitLab.
Conduct security audits to identify and address similar vulnerabilities.

Patching and Updates

Ensure timely installation of security patches and updates provided by GitLab to prevent exploitation of this vulnerability.