CVE-2021-21933 : Security Advisory and Response
Learn about CVE-2021-21933, a SQL injection vulnerability in Advantech R-SeeNet 2.4.15. Discover its impact, affected systems, and mitigation steps against this high-severity threat.
A detailed overview of CVE-2021-21933, including its impact, technical details, and mitigation steps.
Understanding CVE-2021-21933
This section dives into the specifics of the CVE-2021-21933 vulnerability.
What is CVE-2021-21933?
CVE-2021-21933 involves a SQL injection vulnerability triggered by a specially-crafted HTTP request. Attackers can exploit the 'esn_filter' parameter through authenticated requests or cross-site request forgery.
The Impact of CVE-2021-21933
With a CVSS base score of 7.7 (High severity), this vulnerability can lead to unauthorized access to confidential information, posing a grave threat.
Technical Details of CVE-2021-21933
Explore the technical aspects of CVE-2021-21933 to understand its implications.
Vulnerability Description
The flaw allows attackers to execute SQL injection attacks via crafted HTTP requests, compromising the integrity of the system.
Affected Systems and Versions
Advantech's R-SeeNet version 2.4.15 (30.07.2021) is susceptible to this security issue.
Exploitation Mechanism
By manipulating the 'esn_filter' parameter, threat actors can inject malicious SQL commands to exploit the vulnerability.
Mitigation and Prevention
Discover the steps to mitigate the risks associated with CVE-2021-21933.
Immediate Steps to Take
Organizations should restrict access to vulnerable systems, monitor for suspicious activities, and apply security patches promptly.
Long-Term Security Practices
Implement robust security protocols, conduct regular security assessments, and educate users on safe browsing practices.
Patching and Updates
Ensure timely installation of security patches and updates provided by Advantech to address the SQL injection vulnerability.