CVE-2021-28506 Missing authorization in EOS
Attackers can bypass authentication to trigger a factory reset on Arista EOS devices via gNOI APIs, causing service disruption.
- 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-2021-28506?
CVE-2021-28506 is a critical missing authorization vulnerability in Arista Networks EOS, published on 14 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue has recently been discovered in Arista EOS where certain gNOI APIs incorrectly skip authorization and authentication which could potentially allow a factory reset of the device.
Which versions are affected by CVE-2021-28506?
It affects 1 product.
Products include Arista Eos.
How do I fix CVE-2021-28506?
No fix has been published for CVE-2021-28506 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2021-28506 being exploited?
There is no known exploitation of CVE-2021-28506 in the wild and no public exploit code.
Other vulnerabilities in Arista Networks EOS
Sources
Also known as GHSA-6vpx-f5jx-6w5m.