CVE-2018-0333 : Security Advisory and Response
Learn about CVE-2018-0333, a Cisco FireSIGHT System Software VPN vulnerability allowing attackers to bypass security measures. Find mitigation steps and prevention strategies here.
Cisco FireSIGHT System Software VPN Configuration Management Vulnerability
Understanding CVE-2018-0333
A security flaw in the configuration management of Cisco FireSIGHT System Software VPN allows unauthorized attackers to bypass VPN security measures.
What is CVE-2018-0333?
The vulnerability arises from incorrect handling of interface names and VPN parameters during dynamic CLI configuration changes, enabling attackers to send packets through a targeted device's interface to bypass established VPN policies.
The Impact of CVE-2018-0333
- Unauthorized attackers can circumvent VPN security measures
- Potential exposure of sensitive data due to policy bypass
Technical Details of CVE-2018-0333
A vulnerability in the VPN configuration management of Cisco FireSIGHT System Software could allow an unauthenticated, remote attacker to bypass VPN security due to unintended side effects of dynamic configuration changes.
Vulnerability Description
- Exploitable flaw in VPN configuration management
- Incorrect handling of interface names and VPN parameters
Affected Systems and Versions
- Product: Cisco FireSIGHT unknown
- Version: Cisco FireSIGHT unknown
Exploitation Mechanism
- Attacker sends packets through a device's interface
- Successful exploitation allows bypassing VPN policies
Mitigation and Prevention
Immediate Steps to Take:
- Apply vendor-provided patches and updates
- Monitor network traffic for any suspicious activities
Long-Term Security Practices:
- Regularly review and update VPN configurations
- Implement network segmentation to limit attack surface
- Conduct security awareness training for employees
- Patching and Updates: Ensure timely installation of security patches and updates