CVE-2021-28501 Auth bypass in Terminattr
Local users with nopassword configuration can gain unrestricted device access due to incorrect AAA API usage in OpenConfig and TerminAttr agents.
- 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-2021-28501?
CVE-2021-28501 is a critical authentication bypass vulnerability in Arista Networks Terminattr, 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 the incorrect use of EOS's AAA API’s by the OpenConfig and TerminAttr agents could result in unrestricted access to the device for local users with nopassword configuration.
Weakness: CWE-285
Which versions are affected by CVE-2021-28501?
It affects 1 product.
Products include Arista Terminattr.
How do I fix CVE-2021-28501?
No fix has been published for CVE-2021-28501 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2021-28501 being exploited?
There is no known exploitation of CVE-2021-28501 in the wild and no public exploit code.
Sources
Also known as GHSA-6m7h-74wg-gq59.