cyberstrikeus 1.6.6 Ensure access to /etc/issue.net is configured (Automated)
Profile
- Level 1 - Server
- Level 1 - Workstation
Description
The contents of the /etc/issue.net file are displayed to users prior to login for remote connections from configured services.
Rationale
- IF - the
/etc/issue.netfile does not have the correct access configured, it could be modified by unauthorized users with incorrect or misleading information.
Audit Procedure
Command Line
Run the following command and verify Access is 644 or more restrictive and Uid and Gid are both 0/root:
# stat -Lc 'Access: (%#a/%A) Uid: ( %u/ %U) Gid: ( %g/ %G)' /etc/issue.net
Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root)
Expected Result
Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root)
Remediation
Command Line
Run the following commands to set mode, owner, and group on /etc/issue.net:
# chown root:root $(readlink -e /etc/issue.net)
# chmod u-x,go-wx $(readlink -e /etc/issue.net)
Default Value
Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root)
References
- NIST SP 800-53 Rev. 5: AC-3, MP-2
CIS Controls
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|---|---|---|---|
| v8 | 3.3 Configure Data Access Control Lists | * | * | * |
| v7 | 14.6 Protect Information through Access Control Lists | * | * | * |
MITRE ATT&CK Mappings: T1222, T1222.002 | TA0005 | M1022