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.
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.
https://utcc.utoronto.ca/~cks/space/blog/tech/SSHKeysAreInfoLeak https://rushter.com/blog/public-ssh-keys/ https://github.com/openssh/openssh-portable/blob/d0fffc88c8fe90c1815c6f4097bc8cbcabc0f3dd/auth4-pubkey.c#L261-L265 https://github.com/openssh/openssh-portable/pull/270
Vulmon