CVE-2021-28493 Auth bypass in Metamako Operating System

High 8.4 Published Updated

Attackers can execute unauthorized commands on Arista Metamako OS devices, leading to privilege escalation and potential system compromise.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
Not needed
Fix
None listed

What is CVE-2021-28493?

CVE-2021-28493 is a high-severity authentication bypass vulnerability in Arista Metamako Operating System, published on 9 Sep 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In Arista's MOS (Metamako Operating System) software which is supported on the 7130 product line, under certain conditions, a user may be able to execute commands despite not having the privileges to do so. This issue affects: Arista Metamako Operating System All releases in the MOS-0.1x train MOS-0.32.0 and prior releases

Weakness: CWE-287

Which versions are affected by CVE-2021-28493?

It affects 1 product.

Products include Arista Metamako Operating System.

How do I fix CVE-2021-28493?

No fix has been published for CVE-2021-28493 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-2021-28493 being exploited?

There is no known exploitation of CVE-2021-28493 in the wild and no public exploit code.

Sources

Also known as GHSA-mqfq-wxw5-3h9w.

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