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[Launchpad Bug Tracker <1794629@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package openssh - 1:7.6p1-4ubuntu0.1

---------------
openssh (1:7.6p1-4ubuntu0.1) bionic-security; urgency=medium

  [ Ryan Finnie ]
  * SECURITY UPDATE: OpenSSH User Enumeration Vulnerability (LP: #1794629)
    - debian/patches/CVE-2018-15473.patch: delay bailout for invalid
      authenticating user until after the packet containing the request
      has been fully parsed.
    - CVE-2018-15473

 -- leo.barbosa@xxxxxxxxxxxxx (Leonidas S. Barbosa)  Mon, 05 Nov 2018
08:51:29 -0300

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

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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:
  Fix Released
Status in openssh source package in Xenial:
  Fix Released
Status in openssh source package in Bionic:
  Fix Released
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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