[Bug 2076898] Re: Numeric name is accepted as valid username for useradd/groupadd

[Simon Chopin]

** Changed in: shadow (Ubuntu)
       Status: In Progress => Fix Committed

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Title:
  Numeric name is accepted as valid username for useradd/groupadd

Status in shadow package in Ubuntu:
  Fix Committed

Bug description:
  Pure numeric names (example 0, 100) should be considered as invalid group and user names
  The command useradd and groupadd must refuse them

  This is not the case in the latest version of shadow :
  1:4.15.3-3ubuntu1

  When we issue:

  $ useradd 0

  The command succeeds instead of failing.

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