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The SSH client must not send environment variables to the server or must only send those pertaining to the locale.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22478 | GEN005529 | SV-46090r1_rule | ECSC-1 | Low |
| Description |
|---|
| Environment variables can be used to change the behavior of remote sessions and should be limited. Locale environment variables specify the language, character set, and other features modifying the operation of software to match the user's preferences. |
| STIG | Date |
|---|---|
| SUSE Linux Enterprise Server v11 for System z | 2012-12-13 |
Details
| Check Text ( C-43347r1_chk ) |
|---|
| Check the SSH client configuration for the SendEnv setting. # grep -i SendEnv /etc/ssh/ssh_config | grep -v '^#' If any line is returned other than those permitting "LANG" or "LC_*" environment variables, this is a finding. |
| Fix Text (F-39434r1_fix) |
|---|
| Edit the SSH client configuration and remove or edit the SendEnv setting(s) to only accept "LANG" or "LC_*" environment variables. |