CVE-2021-21923 : Security Advisory and Response

A SQL injection vulnerability (CWE-89) has been identified in Advantech R-SeeNet 2.4.15. Attackers can exploit this flaw via specially-crafted HTTP requests, potentially compromising data integrity.

Understanding CVE-2021-21923

This CVE involves a high-severity SQL injection vulnerability affecting Advantech's R-SeeNet version 2.4.15.

What is CVE-2021-21923?

A specially-crafted HTTP request can lead to SQL injection, allowing attackers to manipulate the 'company_filter' parameter through authenticated HTTP requests or cross-site request forgery.

The Impact of CVE-2021-21923

With a CVSS base score of 7.7 (High), this vulnerability poses a significant risk to confidentiality, potentially enabling attackers to access sensitive information.

Technical Details of CVE-2021-21923

This section covers the specific technical aspects of the CVE.

Vulnerability Description

The vulnerability arises due to improper neutralization of special elements in an SQL command, making it susceptible to injection attacks.

Affected Systems and Versions

Advantech R-SeeNet 2.4.15 (30.07.2021) is confirmed to be impacted by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability through authenticated HTTP requests or by leveraging cross-site request forgery to manipulate the 'company_filter' parameter.

Mitigation and Prevention

Protecting systems against CVE-2021-21923 is crucial for maintaining cybersecurity.

Immediate Steps to Take

Organizations should apply security patches promptly, restrict network access, and monitor for any suspicious activities or unauthorized access attempts.

Long-Term Security Practices

Implementing secure coding practices, conducting regular security assessments, and educating users on cybersecurity best practices can help prevent similar vulnerabilities.

Patching and Updates

Ensure that the affected Advantech systems are updated with the latest patches provided by the vendor to remediate the SQL injection vulnerability.