Username Enumeration Vulnerability in OpenSSH 7.8

CVE-2018-15919 · MEDIUM Severity

AV:N/AC:L/AU:N/C:P/I:N/A:N

Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states 'We understand that the OpenSSH developers do not want to treat such a username enumeration (or "oracle") as a vulnerability.'

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