Cis Bind9 V301 2 3
DevOps & Securitycis-bind9-v301-2-3Cis Bind9 V301 2 3 is an Agent Skill for devops & security published in the CyberStrikeus/CyberStrike repository on GitHub: a SKILL.md instruction file an AI agent can load to do this task.
Lock the BIND User Account (Automated)
How to use this skill
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Inspect the Agent Skill at https://github.com/CyberStrikeus/CyberStrike/blob/HEAD/.cyberstrike/skill/CIS_benchmarks/Server_Software/Bind/CIS_ISC_BIND_DNS_Server_9.9_Benchmark_v3.0.1/cis-bind9-v301-2-3/SKILL.md and all supporting files. Report provenance, permissions, scripts, dependencies, and security risks. Propose an exact installation into .agents/skills/cis-bind9-v301-2-3, but wait for my approval before writing files or running scripts.
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CIS 2.3 — Lock the BIND User Account
Profile Applicability
- Level 1 - Authoritative Name Server
- Level 1 - Caching Only Name Server
Description
The user account under which BIND runs should not have a valid password, but should be locked.
Rationale
As a defense-in-depth measure the named user account should be locked to prevent logins, and to prevent a user from su'ing to named using a password. In general, there shouldn't be a need for anyone to have to su as named, and when there is a need, then sudo should be used instead, which would not require the account password.
Impact
Not Applicable
Audit Procedure
Ensure the named account is locked using the following:
# passwd -S named
named LK 2016-07-10 -1 -1 -1 -1 (Password locked.)
The results will be similar to the output shown above.
Remediation
Lock the named account password if not already locked.
Default Value
Account is locked by default.
References
Not Applicable
CIS Controls
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|---|---|---|---|
| v6 | 16 - Account Monitoring and Control | N | Y | Y |
MITRE ATT&CK Mappings
| Tactic | Technique |
|---|---|
| Privilege Escalation | T1078 - Valid Accounts |
| Persistence | T1136 - Create Account |
Profile
- Level 1 - Authoritative Name Server
- Level 1 - Caching Only Name Server