The Photon operating system must configure Secure Shell (SSH) to disallow compression of the encrypted session stream.
An XCCDF Rule
Description
If compression is allowed in an SSH connection prior to authentication, vulnerabilities in the compression software could result in compromise of the system from an unauthenticated connection.
- ID
- SV-258878r991589_rule
- Version
- PHTN-40-000215
- Severity
- Medium
- References
- Updated
Remediation Templates
A Manual Procedure
Navigate to and open:
/etc/ssh/sshd_config
Ensure the "Compression" line is uncommented and set to the following: