CVE-2021-21501 Explained : Impact and Mitigation

Apache ServiceComb is an open-source microservices software. CVE-2021-21501, also known as ServiceComb ServiceCenter Directory Traversal, affects Apache ServiceComb versions prior to 2.0.0. The vulnerability arises from improper configuration leading to a Directory Traversal issue in ServiceCenter 1.x. It was discovered on an unknown date and has low severity.

Understanding CVE-2021-21501

This section provides detailed insights into the CVE-2021-21501 vulnerability.

What is CVE-2021-21501?

CVE-2021-21501, also named ServiceComb ServiceCenter Directory Traversal, involves an improper configuration that triggers a Directory Traversal problem in Apache ServiceComb's ServiceCenter 1.x versions. This issue has been resolved in version 2.0.0.

The Impact of CVE-2021-21501

The impact of CVE-2021-21501 is rated as low. However, if exploited, attackers could potentially execute directory traversal attacks.

Technical Details of CVE-2021-21501

In this section, we delve into the technical aspects of CVE-2021-21501.

Vulnerability Description

The vulnerability stems from a lack of proper restriction on directory paths, allowing attackers to navigate through directories beyond their authorized access.

Affected Systems and Versions

Apache ServiceComb versions prior to 2.0.0, specifically ServiceCenter 1.x, are affected by this vulnerability.

Exploitation Mechanism

Exploiting CVE-2021-21501 requires an attacker to manipulate directory paths through vulnerable configurations, potentially leading to unauthorized data access.

Mitigation and Prevention

To safeguard your systems from CVE-2021-21501, consider the following mitigation strategies.

Immediate Steps to Take

Upgrade Apache ServiceComb to version 2.0.0 or higher to mitigate the vulnerability.
Implement proper access controls and input validation mechanisms.

Long-Term Security Practices

Regularly monitor security advisories and update your software promptly.
Conduct periodic security assessments and penetration testing to identify and address vulnerabilities.

Patching and Updates

Stay informed about security patches released by Apache ServiceComb and apply them as soon as they are available.