[Bug 1794629] Re: CVE-2018-15473 - User enumeration vulnerability

[Marc Deslauriers]

** Also affects: openssh (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Also affects: openssh (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: openssh (Ubuntu Cosmic)
   Importance: Undecided
       Status: New

** Also affects: openssh (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Changed in: openssh (Ubuntu Trusty)
     Assignee: (unassigned) => Leonidas S. Barbosa (leosilvab)

** Changed in: openssh (Ubuntu Xenial)
     Assignee: (unassigned) => Leonidas S. Barbosa (leosilvab)

** Changed in: openssh (Ubuntu Bionic)
     Assignee: (unassigned) => Leonidas S. Barbosa (leosilvab)

** Changed in: openssh (Ubuntu Cosmic)
     Assignee: (unassigned) => Leonidas S. Barbosa (leosilvab)

** Changed in: openssh (Ubuntu)
     Assignee: (unassigned) => Leonidas S. Barbosa (leosilvab)

** Changed in: openssh (Ubuntu Trusty)
       Status: New => In Progress

** Changed in: openssh (Ubuntu Xenial)
       Status: New => In Progress

** Changed in: openssh (Ubuntu Bionic)
       Status: New => In Progress

** Changed in: openssh (Ubuntu Cosmic)
       Status: New => In Progress

** Changed in: openssh (Ubuntu)
       Status: Confirmed => In Progress

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https://bugs.launchpad.net/bugs/1794629

Title:
  CVE-2018-15473 - User enumeration vulnerability

Status in openssh package in Ubuntu:
  In Progress
Status in openssh source package in Trusty:
  In Progress
Status in openssh source package in Xenial:
  In Progress
Status in openssh source package in Bionic:
  In Progress
Status in openssh source package in Cosmic:
  In Progress

Bug description:
  https://nvd.nist.gov/vuln/detail/CVE-2018-15473

  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.

  Fixed in Debian: https://www.debian.org/security/2018/dsa-4280

  Currently pending triage? https://people.canonical.com/~ubuntu-
  security/cve/2018/CVE-2018-15473.html

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