CVE-2019-1848 : Security Advisory and Response
Learn about CVE-2019-1848, a critical vulnerability in Cisco DNA Center allowing unauthorized access to internal services. Find mitigation steps and patching details here.
Cisco DNA Center Authentication Bypass Vulnerability
Understanding CVE-2019-1848
An unauthenticated individual in close proximity to Cisco DNA Center could exploit a security flaw, bypassing authentication to access internal services.
What is CVE-2019-1848?
The vulnerability allows unauthorized access to critical internal services due to inadequate access restriction to essential system operation ports.
The Impact of CVE-2019-1848
The vulnerability has a CVSS base score of 9.3 (Critical) with high confidentiality and integrity impacts but no availability impact.
Technical Details of CVE-2019-1848
Vulnerability Description
- Exploitable by connecting an unauthorized device to the cluster services subnet
- Enables access to unprotected internal services
Affected Systems and Versions
- Product: Cisco DNA Center
- Vendor: Cisco
- Versions Affected: < 1.3
Exploitation Mechanism
- Attacker needs physical proximity to the DNA Center
- Connects unauthorized device to the cluster services subnet
Mitigation and Prevention
Immediate Steps to Take
- Apply vendor-provided patches promptly
- Monitor network for unauthorized devices
Long-Term Security Practices
- Implement network segmentation to limit unauthorized access
- Regularly update and patch systems
- Conduct security awareness training for employees
Patching and Updates
- Refer to Cisco's security advisory for specific patch details