Detections
Analytics
CVE-2016-20012
medium
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
References
https://www.openwall.com/lists/oss-security/2018/08/24/1
https://utcc.utoronto.ca/~cks/space/blog/tech/SSHKeysAreInfoLeak
https://security.netapp.com/advisory/ntap-20211014-0005/
https://github.com/openssh/openssh-portable/pull/270#issuecomment-943909185
https://github.com/openssh/openssh-portable/pull/270#issuecomment-920577097