Detections
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1.219 RHEL-09-255085

Information

RHEL 9 must not allow users to override SSH environment variables.

GROUP ID: V-257993
RULE ID: SV-257993r1045049

SSH environment options potentially allow users to bypass access restriction in some configurations.

Solution

Configure the RHEL 9 SSH daemon to not allow unattended or automatic logon to the system by editing the following line in the "/etc/ssh/sshd_config" or in a file in "/etc/ssh/sshd_config.d":

PermitUserEnvironment no

Restart the SSH daemon for the setting to take effect:

$ sudo systemctl restart sshd.service

See Also

https://workbench.cisecurity.org/benchmarks/22008

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-257993r1045049_rule, STIG-ID|RHEL-09-255085, Vuln-ID|V-257993

Plugin: Unix

Control ID: 829f9efa910b1840c241d40974a94f617f2c50bc0990bcd3ca577793781f9e38