CVE-2021-35962 : Vulnerability Insights and Analysis

This article provides an in-depth analysis of CVE-2021-35962, a vulnerability found in the Door Access Control and Personnel Attendance Management system by TAIWAN SECOM CO., LTD. that allows remote attackers to download credential files unauthorizedly.

Understanding CVE-2021-35962

CVE-2021-35962 is a security vulnerability that affects the Door Access Control and Personnel Attendance Management system by TAIWAN SECOM CO., LTD., potentially enabling attackers to exploit path traversal to retrieve sensitive files remotely.

What is CVE-2021-35962?

The vulnerability in the system arises due to the lack of proper filtering of special characters in specific page parameters, allowing threat actors to conduct path traversal attacks and retrieve credential files without proper authorization.

The Impact of CVE-2021-35962

With a base severity rating of HIGH and a CVSS base score of 7.5, CVE-2021-35962 poses a significant risk in terms of confidentiality impact, potentially leading to unauthorized access to sensitive credential data stored within the system.

Technical Details of CVE-2021-35962

The vulnerability affects specific versions of the Door Access Control and Personnel Attendance Management system by TAIWAN SECOM CO., LTD. as follows:

Vulnerability Description

The system fails to filter special characters in certain page parameters, which can be exploited by remote attackers to perform path traversal attacks and download credential files.

Affected Systems and Versions

Door Access Control version <= 3.3.2
Personnel Attendance system version <= 3.4.0.0.3.12_20210525

Exploitation Mechanism

Remote attackers can manipulate page parameters to navigate through directories and download credential files from the system, bypassing the intended restrictions.

Mitigation and Prevention

In order to mitigate the risks associated with CVE-2021-35962, users and organizations are advised to take the following measures:

Immediate Steps to Take

Update to Personnel Attendance system version 3.4.0.0.3.12_20210525 as a security patch to address the vulnerability.

Long-Term Security Practices

Regularly update and patch the system to ensure all security vulnerabilities are addressed promptly.

Patching and Updates

Stay informed about security advisories and updates provided by the vendor to protect the system from potential exploits.