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The SSH daemon must not accept environment variables from the client or must only accept those pertaining to the locale.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22477 | GEN005528 | SV-46088r1_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 | 2013-04-26 |
Details
| Check Text ( C-43345r1_chk ) |
|---|
| Check the SSH daemon configuration for the AcceptEnv setting. # grep -i AcceptEnv /etc/ssh/sshd_config | grep -v '^#' If any line is returned other than those permitting "LANG" or "LC_*" environment variables, this is a finding. |
| Fix Text (F-39432r1_fix) |
|---|
| Edit the SSH daemon configuration and remove or edit the AcceptEnv setting(s) to only accept "LANG" or "LC_*" environment variables. |