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

[Vital Koshalew]

@root (mysky),

You don't need any scripts. Referring to a vendor's documentation
(https://usn.ubuntu.com/3809-1/ in this case) is usually enough.

See also:
https://pci.qualys.com/static/help/merchant/false_positives/submit_false_positive_requests.htm

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

Title:
  CVE-2018-15473 - User enumeration vulnerability

Status in openssh package in Ubuntu:
  Fix Released
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:
  Fix Released

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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