CVE-2017-7935 : What You Need to Know
Learn about CVE-2017-7935, a Resource Exhaustion issue in Phoenix Contact GmbH mGuard firmware versions 8.3.0 to 8.4.2. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
Phoenix Contact GmbH mGuard firmware versions 8.3.0 to 8.4.2 are affected by a Resource Exhaustion vulnerability that can compromise device availability through multiple initial VPN requests.
Understanding CVE-2017-7935
What is CVE-2017-7935?
This CVE identifies a Resource Exhaustion issue in Phoenix Contact GmbH mGuard firmware versions 8.3.0 to 8.4.2, allowing attackers to impact device availability.
The Impact of CVE-2017-7935
The vulnerability can lead to a compromised device availability when attackers execute numerous initial VPN requests.
Technical Details of CVE-2017-7935
Vulnerability Description
The identified problem is Resource Exhaustion in Phoenix Contact GmbH mGuard firmware versions 8.3.0 to 8.4.2.
Affected Systems and Versions
- Product: Phoenix Contact GmbH mGuard
- Versions: 8.3.0 to 8.4.2
Exploitation Mechanism
Attackers can compromise device availability by carrying out multiple initial VPN requests.
Mitigation and Prevention
Immediate Steps to Take
- Update to the latest firmware version provided by Phoenix Contact GmbH.
- Monitor and restrict VPN requests to prevent resource exhaustion.
Long-Term Security Practices
- Regularly update firmware and security patches.
- Implement network segmentation to limit the impact of potential attacks.
Patching and Updates
Apply patches and updates promptly to address the Resource Exhaustion vulnerability in Phoenix Contact GmbH mGuard firmware versions 8.3.0 to 8.4.2.