CVE-2019-0061 Explained : Impact and Mitigation

Juniper Networks Junos OS is affected by a vulnerability in the management daemon (MGD) configuration, potentially allowing local privilege escalation.

Understanding CVE-2019-0061

This CVE involves a misconfiguration in the internal unix-domain socket used by the Junos CLI to communicate with the MGD, leading to a local user with authenticated access gaining administrative privileges.

What is CVE-2019-0061?

The vulnerability in the MGD configuration could be exploited by a local user with authenticated access to elevate privileges on Linux-based Junos OS platforms.

The Impact of CVE-2019-0061

CVSS Base Score: 7.8 (High Severity)
Attack Vector: Local
Confidentiality, Integrity, and Availability Impact: High
Privileges Required: Low
Scope: Unchanged
User Interaction: None
Exploitation Complexity: Low

Technical Details of CVE-2019-0061

Vulnerability Description

The misconfiguration of the internal socket in Junos OS allows local users to exploit it for privilege escalation.

Affected Systems and Versions

Junos OS versions 15.1X49 to 18.4 are impacted.

Exploitation Mechanism

Exploiting this vulnerability requires Junos shell access on Linux-based platforms.

Mitigation and Prevention

Immediate Steps to Take

Limit access to the Junos shell to trusted administrators.

Long-Term Security Practices

Regularly monitor and update Junos OS to the latest patched versions.

Patching and Updates

Juniper Networks has released updated software versions to address this issue, starting from 15.1X49-D171 to 19.1R1 and subsequent releases.