CVE-2021-34809 : Exploit Details and Defense Strategies

A critical Command Injection vulnerability, CVE-2021-34809, was discovered in Synology Download Station before version 3.8.16-3566, allowing remote authenticated users to execute arbitrary code. This CVE was published on June 17, 2021.

Understanding CVE-2021-34809

This section covers what CVE-2021-34809 entails, its impact, technical details, and mitigation strategies.

What is CVE-2021-34809?

The CVE-2021-34809 vulnerability involves improper neutralization of special elements in a command, enabling remote authenticated users to execute arbitrary code through the task management component in Synology Download Station.

The Impact of CVE-2021-34809

With a CVSS base score of 9.9, this critical vulnerability has a high impact on confidentiality, integrity, and availability. Attackers can exploit this flaw to run malicious commands, posing a significant threat to affected systems.

Technical Details of CVE-2021-34809

Explore the technical aspects of CVE-2021-34809, including the vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises from a command injection issue in the task management component of Synology Download Station. It allows attackers to execute unauthorized commands using unspecified vectors.

Affected Systems and Versions

Synology Download Station versions before 3.8.16-3566 are impacted by this vulnerability. Users with these versions are at risk of remote code execution by authenticated attackers.

Exploitation Mechanism

Remote authenticated users can exploit CVE-2021-34809 by injecting malicious commands through the affected task management component. This leads to the execution of arbitrary code on the target system.

Mitigation and Prevention

Discover the immediate steps and best practices to mitigate the risks associated with CVE-2021-34809 and prevent future vulnerabilities.

Immediate Steps to Take

Users are advised to update Synology Download Station to version 3.8.16-3566 or later to eliminate the vulnerability. Additionally, restrict network access to the application to reduce exposure to potential attacks.

Long-Term Security Practices

Implement strong authentication mechanisms, regularly monitor for unusual activities, and educate users on safe computing practices to enhance overall system security.

Patching and Updates

Stay vigilant for security alerts and patches from Synology. Regularly applying updates and security patches is crucial to maintaining a secure environment.