CVE-2021-27794 Auth bypass in Brocade Fabric OS
Attackers can bypass authentication via empty or invalid passwords on telnet, ssh, and REST interfaces, gaining unauthorized access to Brocade Fabric OS devices.
- 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-2021-27794?
CVE-2021-27794 is a high-severity authentication bypass vulnerability in Broadcom Fabric Operating System, published on 12 Aug 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability in the authentication mechanism of Brocade Fabric OS versions before Brocade Fabric OS v.9.0.1a, v8.2.3a and v7.4.2h could allow a user to Login with empty password, and invalid password through telnet, ssh and REST.
Weakness: CWE-287
Which versions are affected by CVE-2021-27794?
It affects 1 product.
Products include Broadcom Fabric Operating System.
How do I fix CVE-2021-27794?
No fix has been published for CVE-2021-27794 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-2021-27794 being exploited?
There is no known exploitation of CVE-2021-27794 in the wild and no public exploit code.
Other vulnerabilities in Broadcom Fabric Operating System
Sources
Also known as GHSA-pm9p-wm39-4jc9.