CVE-2021-26921 Explained : Impact and Mitigation

Arngo CD before version 1.8.4 allows user tokens to remain active even after the user account is disabled.

Understanding CVE-2021-26921

This CVE highlights a security issue in Argo CD that can potentially impact the authentication mechanism.

What is CVE-2021-26921?

The vulnerability in Argo CD allows tokens to continue working after a user account has been disabled, posing a security risk.

The Impact of CVE-2021-26921

The vulnerability could lead to unauthorized access or misuse of resources even after revoking user access.

Technical Details of CVE-2021-26921

This section covers specific technical aspects of the vulnerability.

Vulnerability Description

In Argo CD before 1.8.4, user tokens do not become invalid upon account disablement, allowing unauthorized access.

Affected Systems and Versions

All versions of Argo CD before 1.8.4 are affected by this vulnerability.

Exploitation Mechanism

Malicious actors can exploit this issue by utilizing active user tokens to gain unauthorized access.

Mitigation and Prevention

To secure systems from CVE-2021-26921, immediate actions and long-term security practices are crucial.

Immediate Steps to Take

Update Argo CD to version 1.8.4 or later to patch the vulnerability and revoke any compromised user tokens.

Long-Term Security Practices

Regularly review and manage user access permissions to prevent similar vulnerabilities in the future.

Patching and Updates

Keep systems updated with the latest security patches and encourage secure authentication practices.