CVE-2017-16766 Explained : Impact and Mitigation

A vulnerability in synodsmnotify in Synology DiskStation Manager (DSM) versions prior to 6.1.4-15217 and 6.0.3-8754-6 allows local users to inject arbitrary web script or HTML, potentially leading to unauthorized access control.

Understanding CVE-2017-16766

This CVE identifies an improper access control vulnerability in Synology DiskStation Manager (DSM) that could be exploited by local users.

What is CVE-2017-16766?

The vulnerability in synodsmnotify component of Synology DSM versions before 6.1.4-15217 and 6.0.3-8754-6 allows local users to insert arbitrary web script or HTML using the -fn option.

The Impact of CVE-2017-16766

The vulnerability poses a risk of unauthorized access control, potentially compromising the security of affected systems.

Technical Details of CVE-2017-16766

This section provides more technical insights into the CVE.

Vulnerability Description

The vulnerability in synodsmnotify component of Synology DSM versions before 6.1.4-15217 and 6.0.3-8754-6 allows local users to inject arbitrary web script or HTML via the -fn option.

Affected Systems and Versions

Product: DiskStation Manager (DSM)
Vendor: Synology
Versions Affected:
Before 6.1.4-15217
Before 6.0.3-8754-6

Exploitation Mechanism

The vulnerability can be exploited by local users to insert arbitrary web script or HTML using the -fn option.

Mitigation and Prevention

Protecting systems from CVE-2017-16766 requires immediate action and long-term security practices.

Immediate Steps to Take

Update affected systems to versions 6.1.4-15217 or later.
Monitor and restrict access to vulnerable components.

Long-Term Security Practices

Regularly update and patch Synology DSM to the latest versions.
Implement least privilege access controls to limit potential exploitation.
Conduct security audits and assessments regularly.

Patching and Updates

Ensure timely installation of security patches and updates provided by Synology to address the vulnerability.