CVE-2021-21919 : Exploit Details and Defense Strategies

A SQL injection vulnerability in Advantech R-SeeNet 2.4.15 (30.07.2021) can be exploited through a specially-crafted HTTP request, leading to high confidentiality impact.

Understanding CVE-2021-21919

This CVE involves a SQL injection risk in Advantech R-SeeNet 2.4.15 (30.07.2021) that can be triggered using authenticated HTTP requests.

What is CVE-2021-21919?

A specially-crafted HTTP request can lead to SQL injection in Advantech R-SeeNet 2.4.15 (30.07.2021), requiring a high privilege super-administrator account for exploitation.

The Impact of CVE-2021-21919

The vulnerability has a base score of 7.7 (High) according to CVSS v3.0, with a high confidentiality impact.

Technical Details of CVE-2021-21919

The vulnerability allows attackers to execute SQL injection attacks through HTTP requests, posing a risk to data confidentiality.

Vulnerability Description

An attacker can exploit a specially-crafted HTTP request in Advantech R-SeeNet 2.4.15 (30.07.2021) to trigger SQL injection.

Affected Systems and Versions

Advantech R-SeeNet 2.4.15 (30.07.2021) is specifically affected by this vulnerability.

Exploitation Mechanism

Authenticated HTTP requests are used to trigger the vulnerability at the 'ord' parameter, necessitating a high privilege super-administrator account.

Mitigation and Prevention

It is crucial to take immediate steps to secure systems and implement long-term security practices to prevent exploitation.

Immediate Steps to Take

Security teams should restrict access, monitor network activity, and apply security patches promptly to mitigate the risk of exploitation.

Long-Term Security Practices

Regular security training, network segmentation, and implementing the principle of least privilege are essential for long-term security.

Patching and Updates

Ensure that systems are regularly updated with the latest security patches to address known vulnerabilities.