Bug 1869432
| Summary: | useradd clarify man page usage regarding period in username | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 8 | Reporter: | adam.c.scott |
| Component: | shadow-utils | Assignee: | Iker Pedrosa <ipedrosa> |
| Status: | CLOSED ERRATA | QA Contact: | shridhar <sgadekar> |
| Severity: | low | Docs Contact: | |
| Priority: | low | ||
| Version: | 8.3 | CC: | dapospis, dlavu, pbrezina, sgadekar, sgoveas |
| Target Milestone: | rc | Keywords: | ManPageChange, Triaged |
| Target Release: | 8.0 | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | sync-to-jira qetodo | ||
| Fixed In Version: | shadow-utils-4.6-12.el8 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2021-05-18 14:59:58 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
|
Description
adam.c.scott
2020-08-18 00:41:57 UTC
Taking into account that the bug doesn't seem critical and RHEL7 life cycle, I'm moving it to RHEL8. Tested with following:
]# rpm -q shadow-utils
shadow-utils-4.6-12.el8.x86_64
#\] man useradd
<snip>
CAVEATS
You may not add a user to a NIS or LDAP group. This must be performed on the corresponding server.
Similarly, if the username already exists in an external user database such as NIS or LDAP, useradd will deny the user account creation request.
Usernames may begin with lower and upper case letters, digits, underscores, or periods. They may continue with all the aforementioned characters, or dashes. Finally, they can end with a dollar sign.
Fully numeric usernames and usernames containing only . or .. are disallowed. It is not recommended to use usernames beginning with . character as their home directories will be hidden in the ls
output. In regular expression terms: [a-zA-Z0-9_.][a-zA-Z0-9_.-]*[$]?
Usernames may only be up to 32 characters long.
</snip>
Above snippet clearly mentions that a period sign could be part of username. That username may begin with a period sign(.) and may continue have a period sign afterward as well. Also a caution is give about why '.' and '..' should not be at start of username.
Marking verified.
.d]# rpm -q shadow-utils
shadow-utils-4.6-12.el8.x86_64
] man useradd
<snip>
CAVEATS
You may not add a user to a NIS or LDAP group. This must be performed on the corresponding server.
Similarly, if the username already exists in an external user database such as NIS or LDAP, useradd will deny the user account creation request.
Usernames may begin with lower and upper case letters, digits, underscores, or periods. They may continue with all the aforementioned characters, or dashes. Finally, they can end with a dollar sign.
Fully numeric usernames and usernames containing only . or .. are disallowed. It is not recommended to use usernames beginning with . character as their home directories will be hidden in the ls
output. In regular expression terms: [a-zA-Z0-9_.][a-zA-Z0-9_.-]*[$]?
Usernames may only be up to 32 characters long.
</snip>
Above snippet clearly mentions that a period sign could be part of username. That username may begin with a period sign(.) and may continue have a period sign afterward as well. Also a caution is give about why '.' and '..' should not be at start of username.
Marking verified.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (shadow-utils bug fix and enhancement update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2021:1650 |