VULNERABILITY INTELLIGENCE

CVE-2018-15919

CVSS score5.3 MEDIUM
EPSS probability3.56%
CISA KEVNot currently listed
Published2018-08-28
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Description

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.'

Weakness classification

  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

Primary references