CVE-2020-29257 : Vulnerability Insights and Analysis

A Cross-site scripting (XSS) vulnerability in Online Examination System 1.0 via the q parameter to feedback.php.

Understanding CVE-2020-29257

This CVE entry describes a specific vulnerability in the Online Examination System 1.0 that can be exploited through a cross-site scripting (XSS) attack.

What is CVE-2020-29257?

CVE-2020-29257 is a security vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users.

The Impact of CVE-2020-29257

This vulnerability can lead to unauthorized access to sensitive information, cookie theft, session hijacking, defacement of websites, and other malicious activities.

Technical Details of CVE-2020-29257

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The vulnerability exists in Online Examination System 1.0 due to improper input validation of the q parameter in feedback.php, allowing attackers to execute arbitrary scripts.

Affected Systems and Versions

Affected Product: Online Examination System 1.0
Affected Version: Not specified

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into the q parameter of the feedback.php page, which are then executed when the page is viewed by other users.

Mitigation and Prevention

Protecting systems from CVE-2020-29257 requires immediate actions and long-term security practices.

Immediate Steps to Take

Disable or sanitize user input to prevent script injection attacks.
Implement Content Security Policy (CSP) headers to mitigate XSS vulnerabilities.
Regularly monitor and audit web applications for security flaws.

Long-Term Security Practices

Conduct regular security training for developers to raise awareness of secure coding practices.
Keep software and systems up to date with the latest security patches.
Employ web application firewalls (WAFs) to filter and block malicious traffic.

Patching and Updates

Ensure that Online Examination System 1.0 is updated with the latest patches and security fixes to address the XSS vulnerability.