CVE-2021-21926 Explained : Impact and Mitigation

This CVE-2021-21926 article provides an overview of a vulnerability impacting Advantech R-SeeNet software version 2.4.15. The vulnerability allows attackers to execute SQL injection attacks via specially-crafted HTTP requests.

Understanding CVE-2021-21926

CVE-2021-21926 is a security flaw in Advantech's R-SeeNet software that enables SQL injection attacks through manipulated HTTP requests.

What is CVE-2021-21926?

The vulnerability in Advantech R-SeeNet 2.4.15 allows malicious actors to perform SQL injection by sending crafted HTTP requests, posing significant data confidentiality risks.

The Impact of CVE-2021-21926

With a CVSS base score of 7.7 (High), the vulnerability doesn't need high privileges, making it easier for unauthorized entities to exploit sensitive data.

Technical Details of CVE-2021-21926

The technical intricacies of CVE-2021-21926 shed light on the vulnerability's nature, affected systems, and exploitation methods.

Vulnerability Description

Attackers can leverage a specially-crafted HTTP request to induce SQL injection, compromising data integrity and confidentiality within the affected system.

Affected Systems and Versions

Advantech's R-SeeNet 2.4.15 software is the only known affected version, making users of this version particularly vulnerable to exploitation.

Exploitation Mechanism

Perpetrators can execute SQL injection attacks by sending manipulated HTTP requests, potentially gaining unauthorized access to sensitive data.

Mitigation and Prevention

Addressing CVE-2021-21926 requires immediate action and long-term security practices to safeguard systems from exploitation.

Immediate Steps to Take

Users should promptly update Advantech R-SeeNet to a secure version, implement appropriate access controls, and monitor for suspicious activities.

Long-Term Security Practices

Regular security assessments, employee training on secure coding practices, and implementing secure development lifecycle (SDLC) processes can enhance overall system security.

Patching and Updates

Stay informed about security advisories from Advantech, apply patches promptly, and prioritize security measures to prevent future vulnerabilities.