CVE-2021-29085 : What You Need to Know

This article provides detailed information about CVE-2021-29085, a vulnerability found in Synology DiskStation Manager (DSM) before version 6.2.3-25426-3 that allows remote attackers to read arbitrary files. Understanding the impact, technical details, and mitigation strategies are crucial to addressing this security issue.

Understanding CVE-2021-29085

CVE-2021-29085 is a vulnerability arising from improper neutralization of special elements in output used by a downstream component ('Injection') in the file sharing management component of Synology DiskStation Manager (DSM) versions before 6.2.3-25426-3.

What is CVE-2021-29085?

The vulnerability in CVE-2021-29085 enables remote attackers to read arbitrary files via unspecified vectors within the affected versions of Synology DSM.

The Impact of CVE-2021-29085

With a CVSS base score of 8.6 and a high severity rating, this vulnerability has a significant impact on the confidentiality of the affected systems. It allows attackers to access sensitive information stored on the Synology DSM.

Technical Details of CVE-2021-29085

CVE-2021-29085 involves the following technical aspects:

Vulnerability Description

The vulnerability results from improper neutralization of special elements in the output, leading to an 'Injection' flaw in the file sharing management component of Synology DSM.

Affected Systems and Versions

Synology DiskStation Manager (DSM) versions before 6.2.3-25426-3 are affected by this vulnerability, putting them at risk of remote file reading attacks.

Exploitation Mechanism

Remote attackers can exploit this vulnerability by leveraging unspecified vectors to read arbitrary files on the targeted Synology DSM systems.

Mitigation and Prevention

To address CVE-2021-29085 and enhance the security of Synology DSM environments, the following steps are recommended:

Immediate Steps to Take

Update Synology DiskStation Manager to the latest version 6.2.3-25426-3 that contains the necessary security patches.
Monitor network traffic and system logs for any suspicious activities that might indicate exploitation attempts.

Long-Term Security Practices

Implement regular security audits and vulnerability assessments to proactively identify and mitigate potential risks.
Educate system administrators and users about safe file sharing practices and cybersecurity awareness.

Patching and Updates

Stay informed about security advisories and patches released by Synology to promptly address any future vulnerabilities and ensure the ongoing security of your systems.