CVE-2020-9028 : Security Advisory and Response

Symmetricom SyncServer S100 2.90.70.3, S200 1.30, S250 1.25, S300 2.65.0, and S350 2.80.1 devices are vulnerable to stored XSS via the newUserName parameter.

Understanding CVE-2020-9028

This CVE involves a security vulnerability in Symmetricom SyncServer devices that could allow an attacker to execute stored cross-site scripting (XSS) attacks.

What is CVE-2020-9028?

The vulnerability in Symmetricom SyncServer devices allows malicious actors to inject and execute malicious scripts via the newUserName parameter on the "User Creation, Deletion and Password Maintenance" screen when creating a new user.

The Impact of CVE-2020-9028

This vulnerability could lead to unauthorized access, data theft, and potential compromise of sensitive information stored on the affected devices.

Technical Details of CVE-2020-9028

Symmetricom SyncServer devices are affected by the following:

Vulnerability Description

The vulnerability allows for stored XSS attacks through the newUserName parameter during the user creation process.

Affected Systems and Versions

Symmetricom SyncServer S100 2.90.70.3
Symmetricom SyncServer S200 1.30
Symmetricom SyncServer S250 1.25
Symmetricom SyncServer S300 2.65.0
Symmetricom SyncServer S350 2.80.1

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into the newUserName parameter, potentially leading to the execution of unauthorized code.

Mitigation and Prevention

To address CVE-2020-9028, consider the following steps:

Immediate Steps to Take

Disable access to the affected screens if not essential.
Implement input validation to sanitize user inputs.
Regularly monitor and audit user accounts and activities.

Long-Term Security Practices

Conduct regular security assessments and penetration testing.
Keep devices up to date with the latest security patches and firmware updates.

Patching and Updates

Apply patches provided by the vendor to mitigate the vulnerability and enhance device security.