CVE-2021-30048 : Security Advisory and Response

This CVE-2021-30048 involves a Directory Traversal vulnerability found in the fileDownload function within the FileController.java file of Novel-plus (小说精品屋-plus) version 3.5.1. Attackers can exploit this vulnerability to read arbitrary files by manipulating the filePath parameter.

Understanding CVE-2021-30048

This section will delve into the details of CVE-2021-30048, exploring the vulnerability, its impact, technical aspects, and mitigation strategies.

What is CVE-2021-30048?

The CVE-2021-30048 is a Directory Traversal vulnerability that exists in the fileDownload function of Novel-plus (小说精品屋-plus) version 3.5.1. Attackers can leverage this flaw to access and read unauthorized files by tampering with the filePath parameter.

The Impact of CVE-2021-30048

This vulnerability poses a significant risk as it allows threat actors to read sensitive files located on the server, potentially leading to unauthorized access to critical data and information.

Technical Details of CVE-2021-30048

Let's explore the technical aspects of CVE-2021-30048, including the vulnerability description, affected systems, versions, and exploitation mechanism.

Vulnerability Description

The vulnerability arises from improper input validation in the fileDownload function of Novel-plus, enabling attackers to perform directory traversal attacks and read files outside the intended directory.

Affected Systems and Versions

Novel-plus version 3.5.1 is confirmed to be impacted by this vulnerability, making systems with this specific version susceptible to exploitation.

Exploitation Mechanism

By manipulating the filePath parameter in the fileDownload function, malicious actors can traverse directories and access confidential files stored on the server.

Mitigation and Prevention

Discover the essential steps to mitigate the risks associated with CVE-2021-30048 and safeguard your systems from potential exploitation.

Immediate Steps to Take

Immediately update Novel-plus to a patched version that addresses the Directory Traversal vulnerability. Implement network security controls and access restrictions to minimize exposure.

Long-Term Security Practices

Enforce secure coding practices, input validation mechanisms, and regular security audits to prevent similar vulnerabilities in the future. Educate developers and users on best security practices.

Patching and Updates

Stay informed about security updates released by Novel-plus and promptly apply patches to eliminate vulnerabilities and enhance the overall security posture of your systems.