CVE-2019-0058 : Security Advisory and Response
Learn about CVE-2019-0058, a vulnerability in Juniper Networks Junos OS allowing privilege escalation. Find mitigation steps and update information here.
A weakness in the Veriexec subsystem of Juniper Networks Junos OS could lead to privilege escalation, impacting SRX Series platforms.
Understanding CVE-2019-0058
What is CVE-2019-0058?
This vulnerability in Junos OS allows a local authenticated user to compromise the host system by escalating privileges.
The Impact of CVE-2019-0058
The vulnerability could result in complete control of the system by an attacker with shell privilege, even if access to certain actions is restricted.
Technical Details of CVE-2019-0058
Vulnerability Description
The weakness in the Veriexec subsystem of Juniper Networks Junos OS enables privilege escalation for local authenticated users.
Affected Systems and Versions
- Product: Junos OS
- Vendor: Juniper Networks
- Versions Affected: 12.3X48 and older than 12.3X48-D80 on SRX Series
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Local
- Privileges Required: Low
- User Interaction: None
- Impact: High confidentiality, integrity, and availability
Mitigation and Prevention
Immediate Steps to Take
- Limit access to Junos shell to trusted administrators
- Restrict actions to reviewed commands
- Log and review shell commands for security
Long-Term Security Practices
- Implement structured change management workflows
- Regularly review and update security practices
Patching and Updates
- Update to Junos OS version 12.3X48-D80 or later to resolve the vulnerability.