The Oracle Linux operating system must be configured so that the SSH public host key files have mode 0644 or less permissive.
An XCCDF Rule
Description
If a public host key file is modified by an unauthorized user, the SSH service may be compromised.
- ID
- SV-221858r991589_rule
- Version
- OL07-00-040410
- Severity
- Medium
- References
- Updated
Remediation Templates
A Manual Procedure
Note: SSH public key files may be found in other directories on the system depending on the installation.
Change the mode of public host key files under "/etc/ssh" to "0644" with the following command:
# chmod 0644 /etc/ssh/*.key.pub