CVE-2021-27318 : Security Advisory and Response
Learn about CVE-2021-27318, a critical Cross Site Scripting (XSS) vulnerability in Doctor Appointment System 1.0 allowing remote attackers to execute malicious scripts.
This article provides an in-depth analysis of CVE-2021-27318, a Cross Site Scripting (XSS) vulnerability found in the Doctor Appointment System 1.0, allowing remote attackers to inject malicious scripts or HTML.
Understanding CVE-2021-27318
In this section, we will explore the nature of the CVE-2021-27318 vulnerability.
What is CVE-2021-27318?
CVE-2021-27318 is a Cross Site Scripting (XSS) vulnerability discovered in contactus.php in Doctor Appointment System 1.0. It permits malicious actors to inject arbitrary web scripts or HTML through the lastname parameter.
The Impact of CVE-2021-27318
This vulnerability can be exploited by remote attackers to execute malicious scripts on the system, potentially leading to sensitive data theft, account takeover, or unauthorized actions.
Technical Details of CVE-2021-27318
In this section, we will delve into the technical aspects of CVE-2021-27318.
Vulnerability Description
The vulnerability arises due to insufficient input validation in the contactus.php of Doctor Appointment System 1.0, enabling attackers to insert and execute malicious scripts.
Affected Systems and Versions
Doctor Appointment System 1.0 is confirmed to be impacted by this vulnerability. The specific versions affected include all instances of the application.
Exploitation Mechanism
Attackers can exploit this vulnerability by injecting malicious scripts or HTML code via the lastname parameter in the contactus.php file, leading to potential XSS attacks.
Mitigation and Prevention
Protecting systems from CVE-2021-27318 requires immediate action and long-term security practices.
Immediate Steps to Take
System administrators should implement input validation mechanisms, sanitize user inputs, and filter out potentially harmful characters to prevent XSS attacks.
Long-Term Security Practices
Regular security audits, code reviews, and security training for developers can help identify and mitigate similar vulnerabilities in the future.
Patching and Updates
It is crucial to apply patches released by the software vendor promptly. Users should update to the latest version of Doctor Appointment System to eliminate the CVE-2021-27318 vulnerability.