{"id":"CVE-2018-15919","aliases":["DEBIAN-CVE-2018-15919","EUVD-2018-7775","GHSA-rj3q-q9f3-gr2v","ROOT-OS-DEBIAN-12-CVE-2018-15919","UBUNTU-CVE-2018-15919"],"status":"published","title":"Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote...","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. 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NOTE: the discoverer states 'We understand that the OpenSSH developers do not want to treat such a username enumeration (or \"oracle\") as a vulnerability.'","status":"published","published":"2018-08-28T08:00:00Z","modified":"2025-12-18T11:48:27Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T19:49:03.481924Z"}],"ghsa":[{"id":"GHSA-rj3q-q9f3-gr2v","title":"Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote...","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.'","status":"published","published":"2022-05-14T01:28:01Z","modified":"2025-12-18T12:30:27Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T15:05:16.313648Z"}],"nvd":[{"id":"CVE-2018-15919","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.'","status":"published","published":"2018-08-28T08:29:00.207Z","modified":"2026-06-17T01:43:19.583Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:04:36.842579Z"}],"osv":[{"id":"CVE-2018-15919","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.'","status":"published","published":"2018-08-28T08:29:00.207Z","modified":"2026-10-24T10:30:27.318302394Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:08.533609Z"},{"id":"DEBIAN-CVE-2018-15919","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.'","status":"published","published":"2018-08-28T08:29:00.207Z","modified":"2026-10-23T18:04:46.924313056Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:30.290351Z"},{"id":"UBUNTU-CVE-2018-15919","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.'","status":"published","published":"2018-08-28T08:29:00Z","modified":"2026-09-22T22:51:34.21029869Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:17.014176Z"},{"id":"ROOT-OS-DEBIAN-12-CVE-2018-15919","title":"CVE-2018-15919 in openssh - Patched by Root","description":"Root has patched CVE-2018-15919 in the openssh package for Root:Debian:12. Multiple fixed versions available.","status":"published","published":"2026-10-19T08:24:56Z","modified":"2026-10-19T09:15:04.511018197Z","updated_at":"2026-11-02T15:53:30.44348Z"}]}}