CVE-2021-27793 Auth bypass in Brocade Fabric OS
Intermittent authorization failures in Brocade Fabric OS prevent valid users from logging into switches, causing denial of service.
- 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-2021-27793?
CVE-2021-27793 is a medium-severity authentication bypass vulnerability in Broadcom Fabric Operating System, published on 12 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
ntermittent authorization failure in aaa tacacs+ with Brocade Fabric OS versions before Brocade Fabric OS v9.0.1b and after 9.0.0, also in Brocade Fabric OS before Brocade Fabric OS v8.2.3a and after v8.2.0 could cause a user with a valid account to be unable to log into the switch.
Weakness: CWE-863
Which versions are affected by CVE-2021-27793?
It affects 1 product.
Products include Broadcom Fabric Operating System.
How do I fix CVE-2021-27793?
No fix has been published for CVE-2021-27793 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-2021-27793 being exploited?
There is no known exploitation of CVE-2021-27793 in the wild and no public exploit code.
Other vulnerabilities in Broadcom Fabric Operating System
Sources
Also known as GHSA-j9pj-ff73-q8xm.