The SSH daemon must not accept environment variables from the client or must only accept those pertaining to locale.

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The SSH daemon must not accept environment variables from the client or must only accept those pertaining to locale.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
GEN005528-ESXI5-000106	GEN005528-ESXI5-000106	GEN005528-ESXI5-000106_rule		Low

Description
Environment variables can be used to change the behavior of remote sessions and should be limited. Locale environment variables that specify the language, character set, and other features modifying the operation of software to match the user's preferences.

STIG	Date
VMware ESXi v5 Security Technical Implementation Guide	2013-01-15

Details

Check Text ( C-GEN005528-ESXI5-000106_chk )
Disable lock down mode. Enable the ESXi Shell. Login as root and execute the following command(s): # grep AcceptEnv /etc/ssh/sshd_config If "AcceptEnv" is not set to "LOCALE" or the keyword/line is missing, this is a finding. Re-enable lock down mode.

Fix Text (F-GEN005528-ESXI5-000106_fix)
Disable lock down mode. Enable the ESXi Shell. Login as root and execute the following command(s): # vi /etc/ssh/sshd_config Add/modify the "AcceptEnv" keyword to "LOCALE", i.e.; AcceptEnv = LOCALE Re-enable lock down mode.