CVE-2021-26560 : What You Need to Know

A critical vulnerability was found in Synology DiskStation Manager (DSM) before version 6.2.3-25426-3, which could allow attackers to intercept sensitive information through cleartext transmission. Here's what you need to know about CVE-2021-26560.

Understanding CVE-2021-26560

This section will cover the essential aspects of the CVE, including its impact and technical details.

What is CVE-2021-26560?

The vulnerability in Synology DiskStation Manager (DSM) enables man-in-the-middle attackers to spoof servers by intercepting data transmitted over HTTP.

The Impact of CVE-2021-26560

With a CVSS base score of 9.0 (Critical), the vulnerability poses a high risk to confidentiality, integrity, and availability. Attackers can exploit this weakness without requiring any special privileges.

Technical Details of CVE-2021-26560

Let's delve deeper into the technical specifics of the CVE.

Vulnerability Description

The vulnerability stems from the cleartext transmission of sensitive information by 'synoagentregisterd' in Synology DiskStation Manager (DSM) versions preceding 6.2.3-25426-3.

Affected Systems and Versions

The impacted product is Synology DiskStation Manager (DSM) by Synology, specifically versions earlier than 6.2.3-25426-3.

Exploitation Mechanism

Attackers can exploit this vulnerability through network-based attacks, with a high level of complexity involved.

Mitigation and Prevention

Protecting your systems from CVE-2021-26560 requires immediate action and a long-term security strategy.

Immediate Steps to Take

Update Synology DiskStation Manager to version 6.2.3-25426-3 or newer to mitigate the vulnerability.
Implement HTTPS to secure data transmissions and prevent interception.

Long-Term Security Practices

Regularly monitor for security advisories from Synology and apply patches promptly.
Conduct security awareness training to educate users about safe online practices.
Use multi-factor authentication and strong passwords to enhance system security.

Patching and Updates

Stay informed about security updates and patches released by Synology to address vulnerabilities and enhance system security.