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CVE-2021-21929 : Exploit Details and Defense Strategies

Learn about CVE-2021-21929, a SQL injection vulnerability in Advantech R-SeeNet software, allowing attackers to compromise data integrity. Find out the impact, affected systems, and mitigation steps.

This article provides detailed information about CVE-2021-21929, a vulnerability that can lead to SQL injection in Advantech's R-SeeNet 2.4.15 software.

Understanding CVE-2021-21929

CVE-2021-21929 is a security vulnerability in Advantech's software that allows an attacker to execute SQL injection attacks through specially-crafted HTTP requests.

What is CVE-2021-21929?

A specially-crafted HTTP request can lead to SQL injection in Advantech R-SeeNet 2.4.15 software. Attackers can exploit the 'prod_filter' parameter to trigger this vulnerability, either as authenticated users or via cross-site request forgery.

The Impact of CVE-2021-21929

With a base CVSS score of 7.7 (High Severity), this vulnerability can result in high confidentiality impact and poses a significant risk to affected systems.

Technical Details of CVE-2021-21929

This section covers the technical specifics of CVE-2021-21929, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

An attacker can execute SQL injection attacks by manipulating the 'prod_filter' parameter in Advantech R-SeeNet 2.4.15 software, compromising data confidentiality.

Affected Systems and Versions

Advantech R-SeeNet 2.4.15 (30.07.2021) is affected by this vulnerability, exposing systems with this version to potential exploitation.

Exploitation Mechanism

By crafting malicious HTTP requests targeting the 'prod_filter' parameter, attackers can inject and execute SQL commands that can lead to data compromise.

Mitigation and Prevention

To address CVE-2021-21929, organizations should take immediate steps, implement long-term security practices, and prioritize patching and updates.

Immediate Steps to Take

Organizations should restrict access to vulnerable systems, monitor for suspicious activities, and apply security patches as soon as they are available.

Long-Term Security Practices

Implement secure coding practices, conduct regular security audits, educate users on security best practices, and maintain a proactive approach to cybersecurity.

Patching and Updates

Advantech users should regularly check for security updates and apply patches provided by the vendor to mitigate the risk associated with CVE-2021-21929.

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