CVE-2017-16774 : Exploit Details and Defense Strategies

Synology DiskStation Manager (DSM) before 6.1.4-15217-3 is vulnerable to Cross-site scripting (XSS) due to a flaw in SYNO.Core.PersonalNotification.Event.

Understanding CVE-2017-16774

This CVE identifies a Cross-site scripting vulnerability in Synology DiskStation Manager (DSM) versions prior to 6.1.4-15217-3.

What is CVE-2017-16774?

The vulnerability in SYNO.Core.PersonalNotification.Event allows authenticated remote users to inject arbitrary web script or HTML using the package parameter.

The Impact of CVE-2017-16774

The vulnerability has a CVSS base score of 6.5, indicating a medium severity issue with low impacts on confidentiality, integrity, and availability.

Technical Details of CVE-2017-16774

Vulnerability Description

Type: Cross-site scripting (XSS)
CWE ID: CWE-79
Description: Improper Neutralization of Input During Web Page Generation

Affected Systems and Versions

Product: DiskStation Manager (DSM)
Vendor: Synology
Versions Affected: < 6.1.4-15217-3

Exploitation Mechanism

Attack Vector: Network
Privileges Required: Low
User Interaction: Required
Scope: Changed

Mitigation and Prevention

Immediate Steps to Take

Upgrade DSM to version 6.1.4-15217-3 or later
Avoid clicking on suspicious links or visiting untrusted websites

Long-Term Security Practices

Regularly update and patch DSM to the latest versions
Implement network security measures to detect and prevent XSS attacks

Patching and Updates

Refer to Synology's security advisory for specific patch details and instructions