Linux distributions
TMA-RHEL9-5.3.3.4.2
Ensure pam_unix does not include remember
Mô tả
The remember=n argument saves the last n passwords for each user in /etc/security/opasswd in order to force password change history and keep the user from alternating between the same password too frequently. The MD5 password hash algorithm is used for storing the old passwords. Instead of this option the pam_pwhistory module should be used. The pam_pwhistory module saves the last n passwords for each user in /etc/security/opasswd using the password hash algorithm set on the pam_unix module. This allows for the sha512 hash algorithm to be used.
Cách kiểm tra
Phương pháp kiểm tra: Lệnh shell
alt0() { command -v grep >/dev/null 2>&1 || { echo "step1: grep not installed"; return 1; }; o=$(bash -c 'grep -Pi -- '"'"'^\h*password\h+([^#\n\r]+\h+)?pam_unix\.so\h+([^#\n\r]+\h+)?remember='"'"' /etc/pam.d/system-auth /etc/pam.d/password-auth' 2>/dev/null); [ -z "$o" ] || { echo "step1: $o" | head -c 300; return 1; }; }; if alt0; then echo compliant; fi- Đầu ra mong đợi
compliant
Cách khắc phục
Phương pháp khắc phục: Hướng dẫn hoặc bản vá hạ tầng
The pam_unix arguments are set on the pam_unix.so module lines in the active authselect profile; editing /etc/pam.d/system-auth or /etc/pam.d/password-auth directly is not durable, because authselect regenerates those files (see the section overview for the authselect profile model). Remove the remember argument so password history is handled by pam_pwhistory rather than pam_unix: 1. Ensure the system is using a custom authselect profile. If it is still on a stock profile, create and select one first, as described in the section overview. 2. On the pam_unix.so lines in the active custom profile templates (/etc/authselect/custom/<profile>/system-auth and /etc/authselect/custom/<profile>/passw…
Thuộc tính
- Hệ điều hành
- rhel-9
- Thẻ
- cis-convertedlinux
- Tham chiếu
- CIS Red Hat Enterprise Linux 9 Benchmark v3.0.0 - 5.3.3.4.2
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tmaegis scan --target linux