!249 Ensure random passwords contain multiple character types
From: @tong_1001 Reviewed-by: @dillon_chen Signed-off-by: @dillon_chen
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@ -0,0 +1,140 @@
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From 879945f56103d937a7fee84bfe7662dc2a5be708 Mon Sep 17 00:00:00 2001
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From: sxt1001 <shixuantong1@huawei.com>
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Date: Thu, 17 Oct 2024 20:45:07 +0800
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Subject: [PATCH] feat: Ensure random passwords contain multiple character
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types (#5815)
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Reference:https://github.com/canonical/cloud-init/commit/879945f56103d937a7fee84bfe7662dc2a5be708
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Conflict:NA
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The complexity of the random password generated by the
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rand_user_password() method may not meet the security configuration
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requirements of the system authentication module. This can cause
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chpasswd to fail.
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This commit ensures we generate a password using 4 different character
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classes.
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Fixes GH-5814
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Co-authored-by: James Falcon <james.falcon@canonical.com>
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---
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cloudinit/config/cc_set_passwords.py | 33 +++++++++++++---
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.../unittests/config/test_cc_set_passwords.py | 38 +++++++++++++++++++
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2 files changed, 66 insertions(+), 5 deletions(-)
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diff --git a/cloudinit/config/cc_set_passwords.py b/cloudinit/config/cc_set_passwords.py
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index 24d8267..d46c7f2 100644
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--- a/cloudinit/config/cc_set_passwords.py
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+++ b/cloudinit/config/cc_set_passwords.py
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@@ -9,7 +9,8 @@
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import logging
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import re
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-from string import ascii_letters, digits
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+import random
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+import string
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from textwrap import dedent
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from typing import List
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@@ -89,9 +90,6 @@ __doc__ = get_meta_doc(meta)
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LOG = logging.getLogger(__name__)
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-# We are removing certain 'painful' letters/numbers
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-PW_SET = "".join([x for x in ascii_letters + digits if x not in "loLOI01"])
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-
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def get_users_by_type(users_list: list, pw_type: str) -> list:
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"""either password or type: RANDOM is required, user is always required"""
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@@ -307,4 +305,29 @@ def handle(name: str, cfg: Config, cloud: Cloud, args: list) -> None:
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def rand_user_password(pwlen=20):
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- return util.rand_str(pwlen, select_from=PW_SET)
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+ if pwlen < 4:
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+ raise ValueError("Password length must be at least 4 characters.")
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+
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+ # There are often restrictions on the minimum number of character
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+ # classes required in a password, so ensure we at least one character
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+ # from each class.
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+ res_rand_list = [
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+ random.choice(string.digits),
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+ random.choice(string.ascii_lowercase),
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+ random.choice(string.ascii_uppercase),
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+ random.choice(string.punctuation),
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+ ]
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+
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+ res_rand_list.extend(
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+ list(
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+ util.rand_str(
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+ pwlen - len(res_rand_list),
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+ select_from=string.digits
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+ + string.ascii_lowercase
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+ + string.ascii_uppercase
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+ + string.punctuation,
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+ )
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+ )
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+ )
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+ random.shuffle(res_rand_list)
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+ return "".join(res_rand_list)
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diff --git a/tests/unittests/config/test_cc_set_passwords.py b/tests/unittests/config/test_cc_set_passwords.py
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index ef34a8c..b5d561c 100644
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--- a/tests/unittests/config/test_cc_set_passwords.py
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+++ b/tests/unittests/config/test_cc_set_passwords.py
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@@ -1,6 +1,7 @@
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# This file is part of cloud-init. See LICENSE file for license information.
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import logging
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+import string
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from unittest import mock
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import pytest
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@@ -555,6 +556,43 @@ class TestExpire:
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assert "Expired passwords" not in caplog.text
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+class TestRandUserPassword:
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+ def _get_str_class_num(self, str):
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+ return sum(
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+ [
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+ any(c.islower() for c in str),
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+ any(c.isupper() for c in str),
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+ any(c.isupper() for c in str),
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+ any(c in string.punctuation for c in str),
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+ ]
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+ )
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+
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+ @pytest.mark.parametrize(
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+ "strlen, expected_result",
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+ [
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+ (1, ValueError),
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+ (2, ValueError),
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+ (3, ValueError),
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+ (4, 4),
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+ (5, 4),
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+ (5, 4),
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+ (6, 4),
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+ (20, 4),
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+ ],
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+ )
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+ def test_rand_user_password(self, strlen, expected_result):
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+ if expected_result is ValueError:
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+ with pytest.raises(
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+ expected_result,
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+ match="Password length must be at least 4 characters.",
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+ ):
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+ setpass.rand_user_password(strlen)
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+ else:
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+ rand_password = setpass.rand_user_password(strlen)
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+ assert len(rand_password) == strlen
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+ assert self._get_str_class_num(rand_password) == expected_result
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+
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+
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class TestSetPasswordsSchema:
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@pytest.mark.parametrize(
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"config, expectation",
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--
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2.33.0
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@ -0,0 +1,31 @@
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From 4c156a80375c01433cdd00546c6278edb0bb6025 Mon Sep 17 00:00:00 2001
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From: sxt1001 <shixuantong1@huawei.com>
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Date: Mon, 21 Oct 2024 23:40:25 +0800
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Subject: [PATCH] test: Fix duplicate judgment conditions in password
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generation (#5835)
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Reference:https://github.com/canonical/cloud-init/commit/4c156a80375c01433cdd00546c6278edb0bb6025
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Conflict:NA
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The problem was introduced by commit 879945f
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---
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tests/unittests/config/test_cc_set_passwords.py | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/tests/unittests/config/test_cc_set_passwords.py b/tests/unittests/config/test_cc_set_passwords.py
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index 73cb3d490..c068f62d8 100644
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--- a/tests/unittests/config/test_cc_set_passwords.py
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+++ b/tests/unittests/config/test_cc_set_passwords.py
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@@ -566,7 +566,7 @@ class TestRandUserPassword:
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[
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any(c.islower() for c in str),
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any(c.isupper() for c in str),
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- any(c.isupper() for c in str),
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+ any(c.isdigit() for c in str),
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any(c in string.punctuation for c in str),
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]
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)
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--
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2.33.0
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@ -1,6 +1,6 @@
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Name: cloud-init
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Version: 23.4.1
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Release: 8
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Release: 9
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Summary: the defacto multi-distribution package that handles early initialization of a cloud instance.
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License: ASL 2.0 or GPLv3
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URL: http://launchpad.net/cloud-init
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@ -29,6 +29,8 @@ Patch6011: backport-fix-netplan-Fix-predictable-interface-rename-issue-5.patch
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Patch6012: backport-fix-Fall-back-to-cached-local-ds-if-no-valid-ds-foun.patch
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Patch6013: backport-fix-openstack-Fix-bond-mac_address-5369.patch
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Patch6014: backport-fix-net-klibc-ipconfig-PROTO-compatibility-5437.patch
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Patch6015: backport-feat-Ensure-random-passwords-contain-multiple-charac.patch
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Patch6016: backport-test-Fix-duplicate-judgment-conditions-in-password-g.patch
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Patch9000: do-not-generate-dsa.patch
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@ -161,6 +163,12 @@ fi
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%exclude /usr/share/doc/*
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%changelog
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* Mon Nov 04 2024 shixuantong <shixuantong1@huawei.com> - 23.4.1-9
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- Type:bugfix
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- CVE:NA
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- SUG:NA
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- DESC:Ensure random passwords contain multiple character types
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* Thu Sep 5 2024 dongyuzhen <dongyuzhen@h-partners.com> - 23.4.1-8
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- Type:bugfix
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- CVE:NA
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