CVE-2021-21924 : Exploit Details and Defense Strategies
Learn about CVE-2021-21924, a high-severity SQL injection vulnerability in Advantech R-SeeNet 2.4.15. Understand the impact, affected systems, and mitigation steps.
This article provides an overview of CVE-2021-21924, a cybersecurity vulnerability that allows SQL injection through a specially-crafted HTTP request in Advantech R-SeeNet versions.
Understanding CVE-2021-21924
CVE-2021-21924 is a high-severity vulnerability that enables attackers to conduct SQL injection attacks via authenticated HTTP requests in Advantech R-SeeNet 2.4.15.
What is CVE-2021-21924?
A specially-crafted HTTP request in Advantech R-SeeNet can trigger SQL injection. Attackers can exploit this by making authenticated HTTP requests or using cross-site request forgery at the 'desc_filter' parameter.
The Impact of CVE-2021-21924
With a CVSS base score of 7.7 (High), this vulnerability poses a significant risk. It has a high impact on confidentiality, allowing attackers to manipulate SQL commands.
Technical Details of CVE-2021-21924
In-depth analysis of the vulnerability in Advantech R-SeeNet versions.
Vulnerability Description
The vulnerability arises from improper handling of HTTP requests, leading to SQL injection that can compromise data integrity.
Affected Systems and Versions
Advantech R-SeeNet version 2.4.15 (30.07.2021) is confirmed to be affected by this vulnerability.
Exploitation Mechanism
Attackers can exploit this issue by sending crafted HTTP requests to the 'desc_filter' parameter, gaining unauthorized access to SQL commands.
Mitigation and Prevention
Effective strategies to mitigate the risks associated with CVE-2021-21924.
Immediate Steps to Take
- Update Advantech R-SeeNet to a patched version that addresses the SQL injection vulnerability.
- Monitor network traffic for any suspicious activities that may indicate exploitation.
Long-Term Security Practices
- Implement proper input validation mechanisms to prevent SQL injection attacks.
- Conduct regular security assessments and audits to identify and address vulnerabilities promptly.
Patching and Updates
Stay informed about security updates from Advantech and apply patches as soon as they are released.