CVE-2020-5548 : Security Advisory and Response
Learn about CVE-2020-5548 affecting Yamaha network devices. Remote attackers can exploit this vulnerability to cause denial of service. Find mitigation steps here.
Yamaha network devices by Yamaha Corporation are vulnerable to remote denial-of-service attacks.
Understanding CVE-2020-5548
This CVE identifies a vulnerability in Yamaha network devices that could be exploited by remote attackers to cause a denial of service.
What is CVE-2020-5548?
The CVE-2020-5548 vulnerability affects various Yamaha network devices, including routers and firewalls, allowing attackers to disrupt services remotely.
The Impact of CVE-2020-5548
The vulnerability enables remote attackers to launch denial-of-service attacks on affected Yamaha network devices, potentially disrupting network services and availability.
Technical Details of CVE-2020-5548
Yamaha network devices are susceptible to a denial-of-service vulnerability, as detailed below:
Vulnerability Description
The affected devices include Yamaha LTE VoIP Router, Gigabit VoIP Router, Gigabit VPN Router, Broadband VoIP Router, and Firewall, with specific firmware versions susceptible to remote denial-of-service attacks.
Affected Systems and Versions
- Yamaha LTE VoIP Router (NVR700W firmware Rev.15.00.15 and earlier)
- Yamaha Gigabit VoIP Router (NVR510 firmware Rev.15.01.14 and earlier)
- Yamaha Gigabit VPN Router (RTX810, RTX830, RTX1200, RTX1210, RTX3500, and RTX5000 firmware versions)
- Yamaha Broadband VoIP Router (NVR500 firmware Rev.11.00.38 and earlier)
- Yamaha Firewall (FWX120 firmware Rev.11.03.27 and earlier)
Exploitation Mechanism
The vulnerability allows remote attackers to exploit unspecified vectors to trigger denial-of-service conditions on the affected Yamaha network devices.
Mitigation and Prevention
To address CVE-2020-5548, consider the following steps:
Immediate Steps to Take
- Monitor network traffic for any unusual patterns that could indicate a denial-of-service attack.
- Implement network segmentation to limit the impact of potential attacks.
- Apply firewall rules to restrict unauthorized access to vulnerable devices.
Long-Term Security Practices
- Regularly update firmware and security patches provided by Yamaha Corporation.
- Conduct security assessments and penetration testing to identify and address vulnerabilities proactively.
Patching and Updates
- Install the latest firmware updates released by Yamaha Corporation to mitigate the CVE-2020-5548 vulnerability.