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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.'
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | No solution exists | May 15, 2025 | Aug 28, 2018 |
| Huawei Euleros 2_0_sp2 | — | Upgrade openssh-askpassUpgrade opensshUpgrade openssh-serverUpgrade openssh-keycatUpgrade openssh-clients | Jun 17, 2020 | Aug 28, 2018 |
| Huawei Euleros 2_0_sp3 | — | Upgrade openssh-keycatUpgrade openssh-clientsUpgrade openssh-serverUpgrade openssh-askpassUpgrade openssh | Apr 16, 2020 | Aug 28, 2018 |
| Huawei Euleros 2_0_sp5 | — | Upgrade openssh-serverUpgrade openssh-keycatUpgrade opensshUpgrade openssh-askpassUpgrade openssh-clients | Mar 24, 2020 | Aug 28, 2018 |
| Huawei Euleros 2_0_sp8 | — | Upgrade openssh-keycatUpgrade openssh-clientsUpgrade openssh-serverUpgrade openssh-cavsUpgrade opensshUpgrade openssh-askpassUpgrade openssh-ldap | Feb 26, 2020 | Aug 28, 2018 |
| Openbsd Openssh | — | Upgrade to the latest version of OpenSSH | Nov 9, 2018 | Aug 28, 2018 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Aug 28, 2018 |
| Suse | — | Upgrade openssh-helpers-debuginfoUpgrade opensshUpgrade openssh-debugsourceUpgrade openssh-cavs-debuginfoUpgrade openssh-openssl1-helpersUpgrade openssh-fipsUpgrade openssh-askpassUpgrade openssh-debuginfoUpgrade openssh-helpersUpgrade openssh-askpass-gnome-debuginfoUpgrade openssh-openssl1Upgrade openssh-cavsUpgrade openssh-askpass-gnome | Oct 30, 2018 | Aug 28, 2018 |
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