CVE-2017-6711 Explained : Impact and Mitigation
Learn about CVE-2017-6711 affecting Cisco Ultra Services Framework. Discover the impact, affected versions, exploitation mechanism, and mitigation steps to secure your systems.
A weakness has been identified in the Cisco Ultra Services Framework's Ultra Automation Service (UAS), potentially allowing unauthorized access to a specific device due to an insecure default configuration of the Apache ZooKeeper service.
Understanding CVE-2017-6711
What is CVE-2017-6711?
The vulnerability in the Ultra Automation Service (UAS) of Cisco Ultra Services Framework could permit an unauthenticated attacker to gain unauthorized access to a targeted device.
The Impact of CVE-2017-6711
The vulnerability could enable an unauthorized individual to access the affected device through the orchestrator network, potentially manipulating the system's high-availability functionality.
Technical Details of CVE-2017-6711
Vulnerability Description
The vulnerability arises from an insecure default configuration of the Apache ZooKeeper service used by the affected software.
Affected Systems and Versions
- All releases of Cisco Ultra Services Framework UAS prior to Releases 5.0.3 and 5.1
Exploitation Mechanism
- Attacker gains access to the affected device via the orchestrator network
- Exploiting the vulnerability allows access to ZooKeeper data nodes (znodes) and system manipulation
Mitigation and Prevention
Immediate Steps to Take
- Apply the necessary patches provided by Cisco
- Restrict network access to the affected devices
Long-Term Security Practices
- Regularly update and patch software to address vulnerabilities
- Implement network segmentation and access controls
Patching and Updates
- Cisco has released patches for affected versions to address the vulnerability