CVE-2021-21934 : Exploit Details and Defense Strategies
Discover the SQL injection vulnerability in Advantech R-SeeNet 2.4.15 (30.07.2021) (CVE-2021-21934). Learn about its impact, affected systems, exploitation, and mitigation steps.
A SQL injection vulnerability was discovered in Advantech R-SeeNet 2.4.15 (30.07.2021) that allows an attacker to execute malicious SQL queries via a specially-crafted HTTP request. This can be triggered through the 'imei_filter' parameter, posing a high risk to confidentiality.
Understanding CVE-2021-21934
This section provides detailed insights into the vulnerability and its impact.
What is CVE-2021-21934?
CVE-2021-21934 involves improper handling of input in Advantech R-SeeNet 2.4.15 (30.07.2021), leading to a SQL injection vulnerability. Attackers can exploit this issue by sending a crafted HTTP request to execute SQL queries.
The Impact of CVE-2021-21934
The impact of this vulnerability is rated as high, with a CVSS base score of 7.7. It allows attackers to access sensitive data, compromising the confidentiality of information.
Technical Details of CVE-2021-21934
In this section, we delve into the technical aspects of the vulnerability, including affected systems, exploitation mechanisms, and more.
Vulnerability Description
A specially-crafted HTTP request can trigger SQL injection in Advantech R-SeeNet 2.4.15 (30.07.2021). This can be exploited by authenticated users or through cross-site request forgery.
Affected Systems and Versions
The affected product is Advantech R-SeeNet version 2.4.15 (30.07.2021).
Exploitation Mechanism
Attackers can exploit this vulnerability by manipulating the 'imei_filter' parameter in authenticated HTTP requests.
Mitigation and Prevention
This section outlines steps to mitigate the risks associated with CVE-2021-21934 and prevent potential exploitation.
Immediate Steps to Take
Users are advised to apply security patches provided by Advantech to remediate the vulnerability. Additionally, disabling the vulnerable parameter can help reduce the risk of exploitation.
Long-Term Security Practices
Implement secure coding practices, input validation mechanisms, and regular security assessments to prevent SQL injection vulnerabilities.
Patching and Updates
Stay informed about security updates from Advantech and promptly apply patches to secure your systems against known vulnerabilities.