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6b5a5eeaba
SSH defaults to disallowing empty passwords but Dovecot has no similar safeguard (at least not one enabled by default). Remove "nullok" from /etc/pam.d/system-auth to implement the desired behavior system-wide.
48 lines
1.8 KiB
YAML
48 lines
1.8 KiB
YAML
- name: Prevent users with empty passwords from authenticating
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replace:
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path: /etc/pam.d/system-auth
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regexp: " nullok"
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replace: ""
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- name: Set restricted access to kernel logs
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copy: src=50-dmesg-restrict.conf dest=/etc/sysctl.d/50-dmesg-restrict.conf owner=root group=root mode=0644
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notify:
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- Apply sysctl settings
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- name: Set ptrace scope, restrict ptrace to CAP_SYS_PTRACE
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copy: src=50-ptrace-restrict.conf dest=/etc/sysctl.d/50-ptrace-restrict.conf owner=root group=root mode=0644
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when: "'buildservers' not in group_names"
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notify:
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- Apply sysctl settings
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- name: Set restricted access to kernel pointers in proc fs
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copy: src=50-kptr-restrict.conf dest=/etc/sysctl.d/50-kptr-restrict.conf owner=root group=root mode=0644
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notify:
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- Apply sysctl settings
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- name: Enable JIT hardening for all users
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copy: src=50-bpf_jit_harden.conf dest=/etc/sysctl.d/50-bpf_jit_harden.conf owner=root group=root mode=0644
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notify:
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- Apply sysctl settings
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- name: Disable unprivileged bpf
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copy: src=50-unprivileged_bpf_disabled.conf dest=/etc/sysctl.d/50-unprivileged_bpf_disabled.conf owner=root group=root mode=0644
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notify:
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- Apply sysctl settings
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- name: Disable unprivileged userns
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copy: src=50-unprivileged_userns_clone.conf dest=/etc/sysctl.d/50-unprivileged_userns_clone.conf owner=root group=root mode=0644
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notify:
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- Apply sysctl settings
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- name: Disable kexec load
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copy: src=50-kexec_load_disabled.conf dest=/etc/sysctl.d/50-kexec_load_disabled.conf owner=root group=root mode=0644
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notify:
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- Apply sysctl settings
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- name: Set kernel lockdown to restricted
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copy: src=50-lockdown.conf dest=/etc/tmpfiles.d/50-kernel-lockdown.conf owner=root group=root mode=0644
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when: "'hcloud' in group_names"
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notify:
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- Apply sysctl settings
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