CVE-2021-23135 : What You Need to Know

Exposure of System Data to an Unauthorized Control Sphere vulnerability in web UI of Argo CD allows attackers to leak secret data into error messages and logs. This vulnerability affects Argo CD versions 1.8 prior to 1.8.7 and 1.7 prior to 1.7.14.

Understanding CVE-2021-23135

This CVE pertains to a security vulnerability in Argo CD that could lead to the exposure of sensitive data.

What is CVE-2021-23135?

The vulnerability in the web UI of Argo CD allows unauthorized individuals to access secret data through error messages and logs.

The Impact of CVE-2021-23135

The impact of this CVE is considered medium with a base severity score of 5.9. It could potentially result in high confidentiality impact.

Technical Details of CVE-2021-23135

This section provides detailed technical information regarding the vulnerability.

Vulnerability Description

When a user with update permissions makes invalid edits in the UI, such as adding a key with a non-encoded value, Argo CD inadvertently reveals the secret contents in error messages and logs.

Affected Systems and Versions

Argo CD versions 1.8 prior to 1.8.7 and 1.7 prior to 1.7.14 are susceptible to this vulnerability.

Exploitation Mechanism

By exploiting this vulnerability, attackers can view sensitive information by manipulating the UI.

Mitigation and Prevention

To address CVE-2021-23135, specific steps need to be taken to enhance system security.

Immediate Steps to Take

Users are advised to upgrade to patched versions of Argo CD, specifically versions 1.7.14 and 1.8.7.

Long-Term Security Practices

Incorporating robust security protocols and regular security audits can help prevent similar vulnerabilities in the future.

Patching and Updates

Regularly updating Argo CD to the latest versions is crucial to ensure protection against known vulnerabilities.