CVE-2020-5548 Denial of service in Yamaha network devices
Remote attackers can cause a denial of service on Yamaha routers and firewalls via unspecified vectors.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-5548?
CVE-2020-5548 is a high-severity denial of service vulnerability in Yamaha network devices, published on 1 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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 firmware Rev.11.01.33 and earlier, RTX830 firmware Rev.15.02.09 and earlier, RTX1200 firmware Rev.10.01.76 and earlier, RTX1210 firmware Rev.14.01.33 and earlier, RTX3500 firmware Rev.14.00.26 and earlier, and RTX5000 firmware Rev.14.00.26 and earlier), Yamaha Broadband VoIP Router(NVR500 firmware Rev.11.00.38 and earlier), and Yamaha Firewall(FWX120 firmware Rev.11.03.27 and earlier) allow remote attackers to cause a denial of service via unspecified vectors.
Which versions are affected by CVE-2020-5548?
It affects 10 products.
Products include Yamaha Fwx120 Firmware, Yamaha Nvr500 Firmware, Yamaha Nvr510 Firmware, Yamaha Nvr700w Firmware, Yamaha Rtx1200 Firmware, Yamaha Rtx1210 Firmware and 4 more.
How do I fix CVE-2020-5548?
No fix has been published for CVE-2020-5548 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2020-5548 being exploited?
There is no known exploitation of CVE-2020-5548 in the wild and no public exploit code.
Sources
Also known as GHSA-4f29-4fj4-943j.