The SSH daemon must not permit user environment settings.

From Red Hat Enterprise Linux 6 Security Technical Implementation Guide

Associated with: CCI-001414

SV-50417r1_rule The SSH daemon must not permit user environment settings.

Vulnerability discussion

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

Check content

To ensure users are not able to present environment daemons, run the following command: # grep PermitUserEnvironment /etc/ssh/sshd_config If properly configured, output should be: PermitUserEnvironment no If it is not, this is a finding.

Fix text

To ensure users are not able to present environment options to the SSH daemon, add or correct the following line in "/etc/ssh/sshd_config": PermitUserEnvironment no

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