TMA-COS-5.3.1.1

Ensure password expiration is 365 days or less

TinggiLevel 2Otomatiscos

Deskripsi

The PASS_MAX_DAYS parameter in /etc/login.defs allows an administrator to force passwords to expire once they reach a defined age. It is recommended that the PASS_MAX_DAYS parameter be set to less than or equal to 365 days. The window of opportunity for an attacker to leverage compromised credentials or successfully compromise credentials via an online brute force attack is limited by the age of the password. Therefore, reducing the maximum age of a password also reduces an attacker's window of opportunity.

Cara pemeriksaan

Metode audit: Perintah shell

shell

bad=0; [ -r /etc/shadow ] || exit 1; v=$(awk '/^[[:space:]]*PASS_MAX_DAYS[[:space:]]/{print $2}' /etc/login.defs | tail -1); [ -n "$v" ] && [ "$v" -ge 1 ] && [ "$v" -le 365 ] || bad=1; for x in $(awk -F: '$2 ~ /^[^*!xX]/ && $2 != "" {print ($5==""?"99999":$5)}' /etc/shadow); do [ "$x" -ge 1 ] && [ "$x" -le 365 ] || bad=1; done; [ $bad -eq 0 ] && echo compliant || echo noncompliant

Output yang diharapkan: compliant

Cara perbaikan

Metode perbaikan: Panduan atau patch infrastruktur

Set the PASS_MAX_DAYS parameter to conform to site policy in /etc/login.defs : PASS_MAX_DAYS 365 Modify user parameters for all users with a password set to match: # chage --maxdays 365 <user>

Properti

Sistem operasi: Apa saja
Tag: authcontainer-optimized-oscos
Referensi: CIS Google Container-Optimized OS Benchmark v1.2.0 - 5.3.1.1 Ensure password expiration is 365 days or less

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shell

tmaegis scan --target cos --level 2