CVE-2020-1676 Explained : Impact and Mitigation

Juniper Networks Mist Cloud UI is affected by a SAML authentication response handling vulnerability that could enable a remote attacker to bypass security controls. Learn about the impact, technical details, and mitigation steps for this CVE.

Understanding CVE-2020-1676

What is CVE-2020-1676?

When SAML authentication is enabled, Juniper Networks Mist Cloud UI may mishandle SAML responses, potentially allowing an attacker to modify a valid response and bypass authentication controls.

The Impact of CVE-2020-1676

This vulnerability poses a high-severity risk with a CVSS base score of 7.2. The attacker could manipulate SAML responses to evade authentication security measures.

Technical Details of CVE-2020-1676

Vulnerability Description

The issue affects all versions of Juniper Networks Mist Cloud UI released before September 2, 2020. An attacker can tamper with SAML responses without invalidating the signature.

Affected Systems and Versions

Product: MIST Cloud UI
Vendor: Juniper Networks
Versions affected: All versions before September 2, 2020

Exploitation Mechanism

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None

Mitigation and Prevention

Immediate Steps to Take

Update Mist Cloud UI to the version released on September 2, 2020, which resolves this vulnerability.

Long-Term Security Practices

Regularly review and update SAML authentication configurations.
Monitor for any unauthorized access attempts.

Patching and Updates

Install security patches and updates provided by Juniper Networks to ensure continued protection.