CVE-2016-20012 Information disclosure in n/a
Remote attackers can enumerate valid username and public key combinations on OpenSSH servers by observing challenge responses.
- 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-2016-20012?
CVE-2016-20012 is a medium-severity vulnerability in Netapp Clustered Data Ontap, published on 15 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
OpenSSH through 8.7 allows remote attackers, who have a suspicion that a certain combination of username and public key is known to an SSH server, to test whether this suspicion is correct. This occurs because a challenge is sent only when that combination could be valid for a login session. NOTE: the vendor does not recognize user enumeration as a vulnerability for this product
Weakness: CWE-203
Which versions are affected by CVE-2016-20012?
It affects 5 products.
Products include Netapp Clustered Data Ontap, Netapp Hci Management Node, Netapp Ontap Select Deploy Administration Utility, Netapp Solidfire, OpenSSH.
How do I fix CVE-2016-20012?
No fix has been published for CVE-2016-20012 yet. Limit exposure of the affected software until one is available.
Is CVE-2016-20012 being exploited?
There is no known exploitation of CVE-2016-20012 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Netapp Clustered Data Ontap
Sources
Also known as DEBIAN-CVE-2016-20012, GHSA-84j4-ccmw-hwpg, UBUNTU-CVE-2016-20012.