CVE-2021-36621 Explained : Impact and Mitigation

A SQL Injection vulnerability has been identified in the Sourcecodester Online Covid Vaccination Scheduler System 1.0. This vulnerability in the username parameter could lead to time-based SQL injection, allowing attackers to decrypt and access admin passwords.

Understanding CVE-2021-36621

This CVE identifies a critical SQL Injection vulnerability in a specific version of the Covid Vaccination Scheduler System.

What is CVE-2021-36621?

The Sourcecodester Online Covid Vaccination Scheduler System 1.0 is susceptible to SQL Injection. The flaw lies in the username parameter, which is vulnerable to time-based SQL injection processes. Exploiting this vulnerability successfully can result in attackers obtaining the admin password hash, which can then be decrypted to reveal the plain-text password, granting unauthorized access as an Administrator.

The Impact of CVE-2021-36621

The exploitation of this vulnerability could lead to unauthorized access to sensitive information, potentially compromising the entire system's security and integrity.

Technical Details of CVE-2021-36621

The following technical details outline the vulnerability, affected systems, and the mechanism of exploitation.

Vulnerability Description

The vulnerability originates from the SQL Injection in the username parameter, allowing attackers to execute time-based SQL injection attacks.

Affected Systems and Versions

Sourcecodester Online Covid Vaccination Scheduler System 1.0 is the specific version affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit the vulnerability by injecting malicious SQL queries into the username parameter, potentially leading to unauthorized access.

Mitigation and Prevention

Understanding how to mitigate and prevent this CVE is crucial to maintaining system security.

Immediate Steps to Take

It is recommended to apply security patches promptly, restrict access to vulnerable systems, and conduct security assessments to identify and remediate such vulnerabilities.

Long-Term Security Practices

Implementing secure coding practices, conducting regular security audits, and providing security awareness training can help prevent such vulnerabilities in the future.

Patching and Updates

Ensure that the system is up to date with the latest security patches and updates to mitigate the risk of exploitation through known vulnerabilities.