CVE-2021-23347 : Vulnerability Insights and Analysis

A Cross-site Scripting (XSS) vulnerability has been identified in the package github.com/argoproj/argo-cd/cmd before 1.7.13, from 1.8.0 and before 1.8.6. This vulnerability could allow an attacker to execute malicious scripts in the context of a user's web session.

Understanding CVE-2021-23347

This section provides insight into the impact and technical details of the CVE-2021-23347 vulnerability.

What is CVE-2021-23347?

The package github.com/argoproj/argo-cd/cmd before 1.7.13, from 1.8.0 and before 1.8.6 are vulnerable to Cross-site Scripting (XSS). An attacker could exploit this vulnerability by sending a malicious error message containing JavaScript through the SSO provider connected to Argo CD.

The Impact of CVE-2021-23347

The impact of this vulnerability is rated as MEDIUM. It has a CVSS base score of 4.7, indicating a potential risk to the confidentiality, integrity, and availability of affected systems. The attack complexity is low, but high privileges are required for exploitation with no user interaction necessary.

Technical Details of CVE-2021-23347

This section delves into the specifics of the vulnerability, including affected systems, and exploitation mechanisms.

Vulnerability Description

The CVE-2021-23347 vulnerability allows attackers to perform Cross-site Scripting (XSS) attacks on vulnerable versions of the github.com/argoproj/argo-cd/cmd package.

Affected Systems and Versions

Systems running versions before 1.7.13, from 1.8.0, and before 1.8.6 of the package github.com/argoproj/argo-cd/cmd are susceptible to this XSS vulnerability.

Exploitation Mechanism

To exploit this vulnerability, an attacker would need to manipulate the SSO provider connected to Argo CD to send a crafted error message containing malicious JavaScript code.

Mitigation and Prevention

Protecting your systems from CVE-2021-23347 requires immediate action and ongoing security practices.

Immediate Steps to Take

Users should update the affected package to a secure version immediately to mitigate the risk of XSS attacks.

Long-Term Security Practices

Implement secure coding practices, regular security updates, and conduct security assessments to detect and prevent XSS vulnerabilities.

Patching and Updates

Stay informed about security updates for the github.com/argoproj/argo-cd/cmd package and apply patches promptly to address known vulnerabilities.