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.
 sarnold> openssh-ssh1 is provided for compatibility with old devices that
  cannot be upgraded to modern protocols. Thus we may not provide security
  support for this package if doing so would prevent access to equipment.
 sarnold> openssh-ssh1 is a *client-only* package, no server-side facility, so
  there is no path to leak data
 mdeslaur> watch for regressions, see debian ELA-37-3
 leosilva> for openss, cosmic is not affected, and so disco too.
Ubuntu 12.04 ESM (Precise Pangolin):needs-triage
Trusty/esm:released (1:6.6p1-2ubuntu2.11)
Ubuntu 16.04 LTS (Xenial Xerus):released (1:7.2p2-4ubuntu2.6)
Ubuntu 18.04 LTS (Bionic Beaver):released (1:7.6p1-4ubuntu0.1)
Ubuntu 18.10 (Cosmic Cuttlefish):released (1:7.7p1-4)
Ubuntu 19.04 (Disco Dingo):not-affected
Ubuntu 19.10 (Eoan):not-affected
Upstream:ignored (frozen on openssh 7.5p)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):not-affected
Ubuntu 18.10 (Cosmic Cuttlefish):not-affected
Ubuntu 19.04 (Disco Dingo):not-affected
Ubuntu 19.10 (Eoan):not-affected
More Information

Updated: 2019-04-26 14:27:00 UTC (commit 30899e40836d26e1bb5f0b072d31fd87b6cf3bd4)