CVE-2021-28496 Information disclosure in Arista EOS
Authenticated users can leak BFD shared secret passwords via eAPI or JSON outputs in Arista EOS when shared secret profiles are configured.
- 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-2021-28496?
CVE-2021-28496 is a medium-severity vulnerability in Arista EOS, published on 21 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
On systems running Arista EOS and CloudEOS with the affected release version, when using shared secret profiles the password configured for use by BiDirectional Forwarding Detection (BFD) will be leaked when displaying output over eAPI or other JSON outputs to other authenticated users on the device. The affected EOS Versions are: all releases in 4.22.x train, 4.23.9 and below releases in the 4.23.x train, 4.24.7 and below releases in the 4.24.x train, 4.25.4 and below releases in the 4.25.x train, 4.26.1 and below releases in the 4.26.x train
Which versions are affected by CVE-2021-28496?
It affects 1 product.
Products include Arista Eos.
How do I fix CVE-2021-28496?
No fix has been published for CVE-2021-28496 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-28496 being exploited?
There is no known exploitation of CVE-2021-28496 in the wild and no public exploit code.
Other vulnerabilities in Arista EOS
Sources
Also known as GHSA-v5xw-5jg8-4q3j.