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.'
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 82%
VendorProductVersion
openbsdopenssh
5.9 ≤
𝑥
≤ 7.8
netappcloud_backup
-
netappdata_ontap_edge
-
netappontap_select_deploy
-
netappsteelstore
-
netappcn1610_firmware
-
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
openssh
bullseye (security)
unimportant
bullseye
unimportant
bookworm
unimportant
bookworm (security)
unimportant
sid
unimportant
trixie
unimportant
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
openssh
focal
ignored
eoan
ignored
disco
ignored
cosmic
ignored
bionic
ignored
xenial
ignored
trusty
ignored
openssh-ssh1
focal
ignored
eoan
ignored
disco
ignored
cosmic
ignored
bionic
ignored
xenial
dne
trusty
dne