Public bug reported:
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.
** Affects: shadow (Ubuntu)
Importance: Undecided
Assignee: Hector CAO (hectorcao)
Status: In Progress
** Changed in: shadow (Ubuntu)
Status: New => In Progress
** Changed in: shadow (Ubuntu)
Assignee: (unassigned) => Hector CAO (hectorcao)
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https://bugs.launchpad.net/bugs/2076898
Title:
Numeric name is accepted as valid username for useradd/groupadd
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