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Servers and applications

CVE-2018-15919

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.'

Severity
Medium 5.3
Published
28 Aug 2018
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Sources
NVD

Affected software

SoftwareAffected versions
OpenSSHServers and applications · cpe:a:openbsd:openssh
  • From 5.9 up to 7.8

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2018-15919
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2018-15919