CVE-2021-28509 TerminAttr streams MACsec sensitive data in clear text to other authorized users in CVP
An attacker with authorized access can view or modify MACsec traffic due to clear text data leakage in Arista TerminAttr streaming telemetry.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-28509?
CVE-2021-28509 is a medium-severity vulnerability in Arista EOS, published on 26 May 2022. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
This advisory documents the impact of an internally found vulnerability in Arista EOS state streaming telemetry agent TerminAttr and OpenConfig transport protocols. The impact of this vulnerability is that, in certain conditions, TerminAttr might leak MACsec sensitive data in clear text in CVP to other authorized users, which could cause MACsec traffic to be decrypted or modified by other authorized users on the device.
Which versions are affected by CVE-2021-28509?
It affects 2 products.
Products include Arista Eos, Arista Terminattr.
How do I fix CVE-2021-28509?
No fix has been published for CVE-2021-28509 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-28509 being exploited?
There is no known exploitation of CVE-2021-28509 in the wild and no public exploit code.
Other vulnerabilities in Arista EOS
Sources
Also known as GHSA-pvh9-pfm3-2228.