9459c84fbc
Security/Functional Fixes: - firewall-setup.sh: Added WireGuard allow, established/related, DHCP (was blocking ALL outbound including VPN - system was non-functional) - disable-package-management.sh: Preserve /var/lib/dpkg/ for queries (was destroying dpkg database with rm -rf) - encryption-validation.sh: Fixed inverted motd conditional (was creating file only if it already existed - backwards) - kernel-hardening.sh: Removed kernel.exec-shield (Red Hat only) Changed user.max_user_namespaces from 0 to 100 - sudo-hardening.sh: Removed Defaults requiretty (was breaking GUI-launched sudo via pkexec) - encryption-setup.sh: Fixed conflicting stdin in luksAddKey - install-scripts.sh: Fixed embedded firewall (same WireGuard bug) Replaced gutted security-hardening stub with real status checker - GRUB config: Fixed serial_console → serial (invalid terminal name) - Package list: Removed audispd-plugins (deprecated in Debian 13), removed duplicate wireguard/wireguard-tools entries Reference: Full audit findings from Session 7 JOURNAL.md 💘 Generated with Crush Assisted-by: GLM-5.1 via Crush <crush@charm.land>
61 lines
1.9 KiB
Bash
Executable File
61 lines
1.9 KiB
Bash
Executable File
#!/bin/bash
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# Sudo hardening - PRD FR-007 Access Control Layer
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# Reference: CIS Benchmark 5.4, NIST SP 800-53 AC-6
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set -euo pipefail
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echo "Configuring sudo access controls..."
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# Create sudoers configuration for restricted access
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mkdir -p /etc/sudoers.d
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chmod 750 /etc/sudoers.d
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# Default sudoers hardening
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cat >/etc/sudoers.d/99-knel-hardening <<'EOF'
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# KNEL-Football Sudo Configuration
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# Reference: PRD FR-007, CIS Benchmark 5.4, NIST SP 800-53 AC-6
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# Lecture user on first sudo use
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Defaults lecture = always
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Defaults lecture_file = /etc/sudo.lecture
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# Logging and timeout
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Defaults logfile = "/var/log/sudo.log"
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Defaults log_input
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Defaults log_output
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Defaults timestamp_timeout = 15
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# Restrict which environment variables are preserved
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Defaults env_reset
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Defaults env_delete += "HOME"
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Defaults secure_path = /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
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# football user can run specific admin commands
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football ALL=(root) /usr/local/bin/apply-vpn-config.sh, /usr/local/bin/convert-luks-kdf.sh, /usr/bin/systemctl restart nftables, /usr/bin/systemctl restart wg-quick@wg0, /usr/local/bin/check-encryption.sh
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# Root can run anything (standard)
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root ALL=(ALL:ALL) ALL
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EOF
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chmod 440 /etc/sudoers.d/99-knel-hardening
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# Create sudo lecture file
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cat >/etc/sudo.lecture <<'EOF'
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====================================================================
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KNEL-Football Secure OS - Privileged Access Warning
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====================================================================
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You are about to execute a command with elevated privileges.
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All sudo commands are logged and audited.
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Unauthorized use of privileged access is a security violation.
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If you did not intend to run a privileged command, press Ctrl+C now.
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====================================================================
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EOF
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# Ensure sudo.log exists with correct permissions
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touch /var/log/sudo.log 2>/dev/null || true
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chmod 600 /var/log/sudo.log 2>/dev/null || true
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echo "Sudo hardening completed."
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