Red Hat Enterprise Linux 9 Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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SRG-OS-000032-GPOS-00013
<GroupDescription></GroupDescription>Group -
RHEL 9 must log SSH connection attempts and failures to the server.
<VulnDiscussion>SSH provides several logging levels with varying amounts of verbosity. "DEBUG" is specifically not recommended other than str...Rule Medium Severity -
SRG-OS-000105-GPOS-00052
<GroupDescription></GroupDescription>Group -
RHEL 9 SSHD must accept public key authentication.
<VulnDiscussion>Without the use of multifactor authentication, the ease of access to privileged functions is greatly increased. Multifactor a...Rule Medium Severity -
SRG-OS-000106-GPOS-00053
<GroupDescription></GroupDescription>Group -
RHEL 9 SSHD must not allow blank passwords.
<VulnDiscussion>If an account has an empty password, anyone could log on and run commands with the privileges of that account. Accounts with ...Rule High Severity -
SRG-OS-000109-GPOS-00056
<GroupDescription></GroupDescription>Group -
RHEL 9 must not permit direct logons to the root account using remote access via SSH.
<VulnDiscussion>Even though the communications channel may be encrypted, an additional layer of security is gained by extending the policy of...Rule Medium Severity -
SRG-OS-000125-GPOS-00065
<GroupDescription></GroupDescription>Group -
RHEL 9 must enable the Pluggable Authentication Module (PAM) interface for SSHD.
<VulnDiscussion>When UsePAM is set to "yes", PAM runs through account and session types properly. This is important when restricted access to...Rule High Severity
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