[Bug 2107726] Re: Edge case while using `passwd` cmd

[johnmkagunda]

passwd version

```
Package: passwd
Version: 1:4.13+dfsg1-4ubuntu3.2
Priority: required
Section: admin
Source: shadow
```

`Linux 6.11.0-24-generic #24~24.04.1-Ubuntu SMP PREEMPT_DYNAMIC x86_64
x86_64 x86_64 GNU/Linux`

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https://bugs.launchpad.net/bugs/2107726

Title:
  Edge case while using `passwd` cmd

Status in shadow package in Ubuntu:
  New

Bug description:
  I was changing my sudo password to a new password and this is what
  happened:

  ```
  ~$ sudo passwd
  New password: 
  BAD PASSWORD: The password is shorter than 8 characters
  Retype new password: 
  passwd: password updated successfully

  ```

  - I tried to use the new sudo password and this happened:

  ```
  $ sudo vi /etc/passwd
  [sudo] password for ... : 
  Sorry, try again.
  [sudo] password for ... : 
  Sorry, try again.

  ```

  The old password worked, meaning that we have incorrect logging when a
  short password is entered twice.

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