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Samanta Navarro 0c83b98105 Read whole line in yes_or_no 
Do not stop after 79 characters. Read the complete line to avoid
arbitrary limitations.

Proof of Concept:

```
cat > passwd-poc << EOF
root❌0:0:root:/root:/bin/bash
root❌0:0:root:/root:/bin/bash
root❌0:0:root:/root:/bin/bash
EOF
python -c "print(80*'y')" | pwck passwd-poc
```

Two lines should still be within the file because we agreed only once
to remove a duplicated line.

Signed-off-by: Samanta Navarro <ferivoz@riseup.net>
Reviewed-by: Alejandro Colomar <alx@kernel.org>
Reviewed-by: Serge Hallyn <serge@hallyn.com>
2023-04-21 18:12:56 -05:00
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README.md

shadow-utils

Introduction

The shadow-utils package includes the necessary programs for converting UNIX password files to the shadow password format, plus programs for managing user and group accounts. The pwconv command converts passwords to the shadow password format. The pwunconv command unconverts shadow passwords and generates a passwd file (a standard UNIX password file). The pwck command checks the integrity of password and shadow files. The lastlog command prints out the last login times for all users. The useradd, userdel, and usermod commands are used for managing user accounts. The groupadd, groupdel, and groupmod commands are used for managing group accounts.

Sites

Contacts

There are several ways to contact us:

Mailing archives

Contributions

Contributions are welcome. Follow the guidelines before posting any patches.

Authors and maintainers

Authors and maintainers are listed in AUTHORS.md.