CVE-2021-23797 : Vulnerability Insights and Analysis

A Directory Traversal vulnerability has been identified in all versions of the

http-server-node

package, which can be exploited via the use of

--path-as-is

.

Understanding CVE-2021-23797

This CVE-2021-23797 affects the

http-server-node

package and can result in a high severity impact.

What is CVE-2021-23797?

The vulnerability in CVE-2021-23797 allows attackers to traverse directories illicitly by exploiting the

--path-as-is

option in the affected package.

The Impact of CVE-2021-23797

With a CVSS base score of 7.5, this high severity vulnerability can lead to unauthorized access to sensitive data due to Directory Traversal.

Technical Details of CVE-2021-23797

Here are some technical details regarding CVE-2021-23797 and how it can affect systems and versions.

Vulnerability Description

The vulnerability arises from improper sanitization of user-supplied input in the

http-server-node

package, enabling Directory Traversal attacks.

Affected Systems and Versions

All versions of the

http-server-node

package are affected by this vulnerability, with the specific trigger being the use of

--path-as-is

.

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the path input using

--path-as-is

, allowing them to navigate to restricted directories.

Mitigation and Prevention

To address CVE-2021-23797 and enhance security, consider the following mitigation strategies and best practices.

Immediate Steps to Take

Users are advised to update the

http-server-node

package to a fixed version that addresses the Directory Traversal vulnerability.

Long-Term Security Practices

Implement input validation and encoding mechanisms to prevent Directory Traversal attacks and regularly monitor for security updates in dependencies.

Patching and Updates

Keep abreast of security advisories related to the

http-server-node

package and promptly apply patches or updates provided by the package maintainers.