OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c.
www.openwall.com/lists/oss-security/2018/08/15/5
www.securityfocus.com/bid/105140
www.securitytracker.com/id/1041487
access.redhat.com/errata/RHSA-2019:0711
access.redhat.com/errata/RHSA-2019:2143
bugs.debian.org/906236
cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
github.com/openbsd/src/commit/779974d35b4859c07bc3cb8a12c74b43b0a7d1e0
lists.debian.org/debian-lts-announce/2018/08/msg00022.html
psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0011
security.gentoo.org/glsa/201810-03
security.netapp.com/advisory/ntap-20181101-0001/
usn.ubuntu.com/3809-1/
www.debian.org/security/2018/dsa-4280
www.exploit-db.com/exploits/45210/
www.exploit-db.com/exploits/45233/
www.exploit-db.com/exploits/45939/
www.oracle.com/security-alerts/cpujan2020.html