CVE-2021-21920 : What You Need to Know
Learn about CVE-2021-21920, a high-severity SQL injection vulnerability in Advantech's R-SeeNet software, impacting confidentiality. Take immediate steps to mitigate the threat.
This article provides detailed information about CVE-2021-21920, a vulnerability in Advantech's R-SeeNet software that allows for SQL injection via a specially-crafted HTTP request.
Understanding CVE-2021-21920
CVE-2021-21920 is a security vulnerability that enables SQL injection through specific HTTP requests in Advantech's R-SeeNet software.
What is CVE-2021-21920?
The CVE-2021-21920 vulnerability in Advantech's R-SeeNet software arises from improper handling of HTTP requests, allowing attackers to inject malicious SQL commands via the 'surname_filter' parameter.
The Impact of CVE-2021-21920
With a base severity rating of HIGH and a CVSS base score of 7.7, CVE-2021-21920 poses a significant threat. Attackers can exploit this vulnerability to gain unauthorized access and compromise confidentiality.
Technical Details of CVE-2021-21920
Understanding the technical aspects of CVE-2021-21920 is crucial to implementing effective mitigation strategies.
Vulnerability Description
A specially-crafted HTTP request can lead to SQL injection. Attackers can exploit the vulnerability by making authenticated HTTP requests to the 'surname_filter' parameter.
Affected Systems and Versions
Advantech's R-SeeNet version 2.4.15 (30.07.2021) is confirmed to be affected by CVE-2021-21920.
Exploitation Mechanism
Attackers can trigger the vulnerability through authenticated HTTP requests with the administrative account or by employing cross-site request forgery techniques.
Mitigation and Prevention
Taking immediate action and adopting long-term security practices is essential to safeguard systems against CVE-2021-21920.
Immediate Steps to Take
Organizations should restrict access to the affected parameter, 'surname_filter,' and monitor for any suspicious activity surrounding this vulnerability.
Long-Term Security Practices
Implementing input validation mechanisms, keeping software up to date, and conducting regular security audits can help prevent SQL injection attacks and similar vulnerabilities.
Patching and Updates
It is critical for Advantech users to apply patches provided by the vendor promptly to address the CVE-2021-21920 vulnerability and enhance system security.