Ensure sshd PermitUserEnvironment is disabled

SrednjaNivo 1Automatskaaix

Opis

The PermitUserEnvironment option allows users to present environment options to the SSH daemon. Permitting users the ability to set environment variables through the SSH daemon could potentially allow users to bypass security controls (e.g. setting an execution path that has SSH executing trojan'd programs) Audit: evaluates the effective configuration from `sshd -T` (Match blocks must be reviewed separately).

Kako se proverava

Metod provere: Komanda ljuske

shell

command -v sshd >/dev/null 2>&1 || exit 1; out=$(sshd -T 2>/dev/null) || exit 1; r=compliant; for p in '^permituserenvironment[[:blank:]]+no$'; do printf '%s\n' "$out" | grep -Eiq -- "$p" || r="not matched: $p"; done; echo "$r"

Očekivani izlaz: compliant

Kako se ispravlja

Metod ispravke: Smernica ili zakrpa infrastrukture

Edit the /etc/ssh/sshd_config file to set the parameter: PermitUserEnvironment no Re-cycle the sshd daemon to pick up the configuration changes: stopsrc -s sshd startsrc -s sshd

Svojstva

Operativni sistemi: Bilo koji
Oznake: aixssh
Referenca: CIS IBM AIX 7 Benchmark v1.2.0 - 4.6.3.16 Ensure sshd PermitUserEnvironment is disabled

Proverite ovaj računar

Pokrenite ovo na računaru za koji imate dozvolu za proveru. Skeniranje radi u režimu samo za čitanje.

shell

tmaegis scan --target aix