mirror of
https://github.com/kanidm/kanidm.git
synced 2025-02-24 04:57:00 +01:00
333 lines
27 KiB
HTML
333 lines
27 KiB
HTML
<!DOCTYPE HTML>
|
|
<html lang="en" class="sidebar-visible no-js light">
|
|
<head>
|
|
<!-- Book generated using mdBook -->
|
|
<meta charset="UTF-8">
|
|
<title>Elevated Priv Mode - Kanidm Administration</title>
|
|
|
|
|
|
<!-- Custom HTML head -->
|
|
|
|
<meta name="description" content="">
|
|
<meta name="viewport" content="width=device-width, initial-scale=1">
|
|
<meta name="theme-color" content="#ffffff" />
|
|
|
|
<link rel="shortcut icon" href="../../favicon.png">
|
|
<link rel="stylesheet" href="../../css/variables.css">
|
|
<link rel="stylesheet" href="../../css/general.css">
|
|
<link rel="stylesheet" href="../../css/chrome.css">
|
|
<link rel="stylesheet" href="../../css/print.css" media="print">
|
|
|
|
<!-- Fonts -->
|
|
<link rel="stylesheet" href="../../FontAwesome/css/font-awesome.css">
|
|
<link rel="stylesheet" href="../../fonts/fonts.css">
|
|
|
|
<!-- Highlight.js Stylesheets -->
|
|
<link rel="stylesheet" href="../../highlight.css">
|
|
<link rel="stylesheet" href="../../tomorrow-night.css">
|
|
<link rel="stylesheet" href="../../ayu-highlight.css">
|
|
|
|
<!-- Custom theme stylesheets -->
|
|
|
|
</head>
|
|
<body>
|
|
<div id="body-container">
|
|
<!-- Provide site root to javascript -->
|
|
<script>
|
|
var path_to_root = "../../";
|
|
var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "navy" : "light";
|
|
</script>
|
|
|
|
<!-- Work around some values being stored in localStorage wrapped in quotes -->
|
|
<script>
|
|
try {
|
|
var theme = localStorage.getItem('mdbook-theme');
|
|
var sidebar = localStorage.getItem('mdbook-sidebar');
|
|
|
|
if (theme.startsWith('"') && theme.endsWith('"')) {
|
|
localStorage.setItem('mdbook-theme', theme.slice(1, theme.length - 1));
|
|
}
|
|
|
|
if (sidebar.startsWith('"') && sidebar.endsWith('"')) {
|
|
localStorage.setItem('mdbook-sidebar', sidebar.slice(1, sidebar.length - 1));
|
|
}
|
|
} catch (e) { }
|
|
</script>
|
|
|
|
<!-- Set the theme before any content is loaded, prevents flash -->
|
|
<script>
|
|
var theme;
|
|
try { theme = localStorage.getItem('mdbook-theme'); } catch(e) { }
|
|
if (theme === null || theme === undefined) { theme = default_theme; }
|
|
var html = document.querySelector('html');
|
|
html.classList.remove('no-js')
|
|
html.classList.remove('light')
|
|
html.classList.add(theme);
|
|
html.classList.add('js');
|
|
</script>
|
|
|
|
<!-- Hide / unhide sidebar before it is displayed -->
|
|
<script>
|
|
var html = document.querySelector('html');
|
|
var sidebar = null;
|
|
if (document.body.clientWidth >= 1080) {
|
|
try { sidebar = localStorage.getItem('mdbook-sidebar'); } catch(e) { }
|
|
sidebar = sidebar || 'visible';
|
|
} else {
|
|
sidebar = 'hidden';
|
|
}
|
|
html.classList.remove('sidebar-visible');
|
|
html.classList.add("sidebar-" + sidebar);
|
|
</script>
|
|
|
|
<nav id="sidebar" class="sidebar" aria-label="Table of contents">
|
|
<div class="sidebar-scrollbox">
|
|
<ol class="chapter"><li class="chapter-item expanded "><a href="../../intro.html"><strong aria-hidden="true">1.</strong> Introduction to Kanidm</a></li><li class="chapter-item expanded "><a href="../../installing_the_server.html"><strong aria-hidden="true">2.</strong> Installing the Server</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../choosing_a_domain_name.html"><strong aria-hidden="true">2.1.</strong> Choosing a Domain Name</a></li><li class="chapter-item expanded "><a href="../../prepare_the_server.html"><strong aria-hidden="true">2.2.</strong> Preparing for your Deployment</a></li><li class="chapter-item expanded "><a href="../../server_configuration.html"><strong aria-hidden="true">2.3.</strong> Server Configuration and Install</a></li><li class="chapter-item expanded "><a href="../../security_hardening.html"><strong aria-hidden="true">2.4.</strong> Platform Security Hardening</a></li><li class="chapter-item expanded "><a href="../../server_update.html"><strong aria-hidden="true">2.5.</strong> Server Updates</a></li></ol></li><li class="chapter-item expanded "><a href="../../client_tools.html"><strong aria-hidden="true">3.</strong> Client Tools</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../installing_client_tools.html"><strong aria-hidden="true">3.1.</strong> Installing client tools</a></li></ol></li><li class="chapter-item expanded "><li class="part-title">Administration</li><li class="chapter-item expanded "><a href="../../administrivia.html"><strong aria-hidden="true">4.</strong> Administration</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../accounts_and_groups.html"><strong aria-hidden="true">4.1.</strong> Accounts and Groups</a></li><li class="chapter-item expanded "><a href="../../authentication.html"><strong aria-hidden="true">4.2.</strong> Authentication and Credentials</a></li><li class="chapter-item expanded "><a href="../../posix_accounts.html"><strong aria-hidden="true">4.3.</strong> POSIX Accounts and Groups</a></li><li class="chapter-item expanded "><a href="../../backup_restore.html"><strong aria-hidden="true">4.4.</strong> Backup and Restore</a></li><li class="chapter-item expanded "><a href="../../database_maint.html"><strong aria-hidden="true">4.5.</strong> Database Maintenance</a></li><li class="chapter-item expanded "><a href="../../domain_rename.html"><strong aria-hidden="true">4.6.</strong> Domain Rename</a></li><li class="chapter-item expanded "><a href="../../monitoring.html"><strong aria-hidden="true">4.7.</strong> Monitoring the platform</a></li><li class="chapter-item expanded "><a href="../../password_quality.html"><strong aria-hidden="true">4.8.</strong> Password Quality and Badlisting</a></li><li class="chapter-item expanded "><a href="../../recycle_bin.html"><strong aria-hidden="true">4.9.</strong> The Recycle Bin</a></li></ol></li><li class="chapter-item expanded "><li class="part-title">Services</li><li class="chapter-item expanded "><a href="../../integrations/pam_and_nsswitch.html"><strong aria-hidden="true">5.</strong> PAM and nsswitch</a></li><li class="chapter-item expanded "><a href="../../ssh_key_dist.html"><strong aria-hidden="true">6.</strong> SSH Key Distribution</a></li><li class="chapter-item expanded "><a href="../../integrations/oauth2.html"><strong aria-hidden="true">7.</strong> Oauth2</a></li><li class="chapter-item expanded "><a href="../../integrations/ldap.html"><strong aria-hidden="true">8.</strong> LDAP</a></li><li class="chapter-item expanded "><a href="../../integrations/radius.html"><strong aria-hidden="true">9.</strong> RADIUS</a></li><li class="chapter-item expanded affix "><li class="part-title">Synchronisation</li><li class="chapter-item expanded "><a href="../../sync/concepts.html"><strong aria-hidden="true">10.</strong> Concepts</a></li><li class="chapter-item expanded "><a href="../../sync/freeipa.html"><strong aria-hidden="true">11.</strong> FreeIPA</a></li><li class="chapter-item expanded affix "><li class="part-title">Integration Examples</li><li class="chapter-item expanded "><a href="../../examples/k8s_ingress_example.html"><strong aria-hidden="true">12.</strong> Kubernetes Ingress</a></li><li class="chapter-item expanded "><a href="../../integrations/traefik.html"><strong aria-hidden="true">13.</strong> Traefik</a></li><li class="chapter-item expanded affix "><li class="part-title">Support</li><li class="chapter-item expanded "><a href="../../troubleshooting.html"><strong aria-hidden="true">14.</strong> Troubleshooting</a></li><li class="chapter-item expanded "><a href="../../frequently_asked_questions.html"><strong aria-hidden="true">15.</strong> Frequently Asked Questions</a></li><li class="chapter-item expanded "><a href="../../glossary.html"><strong aria-hidden="true">16.</strong> Glossary of Technical Terms</a></li><li class="chapter-item expanded affix "><li class="part-title">For Developers</li><li class="chapter-item expanded "><a href="../../DEVELOPER_README.html"><strong aria-hidden="true">17.</strong> Developer Guide</a></li><li class="chapter-item expanded "><a href="../../developers/faq.html"><strong aria-hidden="true">18.</strong> FAQ</a></li><li class="chapter-item expanded "><div><strong aria-hidden="true">19.</strong> Design Documents</div></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../developers/designs/access_profiles_rework_2022.html"><strong aria-hidden="true">19.1.</strong> Access Profiles 2022</a></li><li class="chapter-item expanded "><a href="../../developers/designs/access_profiles_and_security.html"><strong aria-hidden="true">19.2.</strong> Access Profiles Original</a></li><li class="chapter-item expanded "><a href="../../developers/designs/rest_interface.html"><strong aria-hidden="true">19.3.</strong> REST Interface</a></li><li class="chapter-item expanded "><a href="../../developers/designs/elevated_priv_mode.html" class="active"><strong aria-hidden="true">19.4.</strong> Elevated Priv Mode</a></li><li class="chapter-item expanded "><a href="../../developers/designs/oauth2_refresh_tokens.html"><strong aria-hidden="true">19.5.</strong> Oauth2 Refresh Tokens</a></li></ol></li><li class="chapter-item expanded "><a href="../../developers/python.html"><strong aria-hidden="true">20.</strong> Python Module</a></li><li class="chapter-item expanded "><a href="../../developers/radius.html"><strong aria-hidden="true">21.</strong> RADIUS Integration</a></li><li class="chapter-item expanded "><a href="../../packaging.html"><strong aria-hidden="true">22.</strong> Packaging</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../packaging_debs.html"><strong aria-hidden="true">22.1.</strong> Debian/Ubuntu</a></li></ol></li></ol>
|
|
</div>
|
|
<div id="sidebar-resize-handle" class="sidebar-resize-handle"></div>
|
|
</nav>
|
|
|
|
<div id="page-wrapper" class="page-wrapper">
|
|
|
|
<div class="page">
|
|
<div id="menu-bar-hover-placeholder"></div>
|
|
<div id="menu-bar" class="menu-bar sticky bordered">
|
|
<div class="left-buttons">
|
|
<button id="sidebar-toggle" class="icon-button" type="button" title="Toggle Table of Contents" aria-label="Toggle Table of Contents" aria-controls="sidebar">
|
|
<i class="fa fa-bars"></i>
|
|
</button>
|
|
<button id="theme-toggle" class="icon-button" type="button" title="Change theme" aria-label="Change theme" aria-haspopup="true" aria-expanded="false" aria-controls="theme-list">
|
|
<i class="fa fa-paint-brush"></i>
|
|
</button>
|
|
<ul id="theme-list" class="theme-popup" aria-label="Themes" role="menu">
|
|
<li role="none"><button role="menuitem" class="theme" id="light">Light</button></li>
|
|
<li role="none"><button role="menuitem" class="theme" id="rust">Rust</button></li>
|
|
<li role="none"><button role="menuitem" class="theme" id="coal">Coal</button></li>
|
|
<li role="none"><button role="menuitem" class="theme" id="navy">Navy</button></li>
|
|
<li role="none"><button role="menuitem" class="theme" id="ayu">Ayu</button></li>
|
|
</ul>
|
|
<button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
|
|
<i class="fa fa-search"></i>
|
|
</button>
|
|
</div>
|
|
|
|
<h1 class="menu-title">Kanidm Administration</h1>
|
|
|
|
<div class="right-buttons">
|
|
<a href="../../print.html" title="Print this book" aria-label="Print this book">
|
|
<i id="print-button" class="fa fa-print"></i>
|
|
</a>
|
|
<a href="https://github.com/kanidm/kanidm" title="Git repository" aria-label="Git repository">
|
|
<i id="git-repository-button" class="fa fa-github"></i>
|
|
</a>
|
|
<a href="https://github.com/kanidm/kanidm/edit/master/book/src/developers/designs/elevated_priv_mode.md" title="Suggest an edit" aria-label="Suggest an edit">
|
|
<i id="git-edit-button" class="fa fa-edit"></i>
|
|
</a>
|
|
|
|
</div>
|
|
</div>
|
|
|
|
<div id="search-wrapper" class="hidden">
|
|
<form id="searchbar-outer" class="searchbar-outer">
|
|
<input type="search" id="searchbar" name="searchbar" placeholder="Search this book ..." aria-controls="searchresults-outer" aria-describedby="searchresults-header">
|
|
</form>
|
|
<div id="searchresults-outer" class="searchresults-outer hidden">
|
|
<div id="searchresults-header" class="searchresults-header"></div>
|
|
<ul id="searchresults">
|
|
</ul>
|
|
</div>
|
|
</div>
|
|
|
|
<!-- Apply ARIA attributes after the sidebar and the sidebar toggle button are added to the DOM -->
|
|
<script>
|
|
document.getElementById('sidebar-toggle').setAttribute('aria-expanded', sidebar === 'visible');
|
|
document.getElementById('sidebar').setAttribute('aria-hidden', sidebar !== 'visible');
|
|
Array.from(document.querySelectorAll('#sidebar a')).forEach(function(link) {
|
|
link.setAttribute('tabIndex', sidebar === 'visible' ? 0 : -1);
|
|
});
|
|
</script>
|
|
|
|
<div id="content" class="content">
|
|
<main>
|
|
<h1 id="elevation-of-privilege-inside-user-sessions"><a class="header" href="#elevation-of-privilege-inside-user-sessions">Elevation of Privilege Inside User Sessions</a></h1>
|
|
<p>To improve user experience, we need to allow long lived sessions in browsers. This is especially
|
|
important as a single sign on system, users tend to be associated 1 to 1 with devices, and by having
|
|
longer lived sessions, they have a smoother experience.</p>
|
|
<p>However, we also don't want user sessions to have unbound write permissions for the entire (possibly
|
|
unlimited) duration of their session.</p>
|
|
<p>Prior art for this is github, which has unbounded sessions on machines and requests a
|
|
re-authentication when a modifying or sensitive action is to occur.</p>
|
|
<p>For us to implement this will require some changes to how we manage sessions.</p>
|
|
<h2 id="session-issuance"><a class="header" href="#session-issuance">Session Issuance</a></h2>
|
|
<ul>
|
|
<li>
|
|
<p>ISSUE: Sessions are issued identically for service-accounts and persons</p>
|
|
</li>
|
|
<li>
|
|
<p>CHANGE: service-accounts require a hard/short session expiry limit and always have elevated
|
|
permissions</p>
|
|
</li>
|
|
<li>
|
|
<p>CHANGE: persons require no session expiry and must request elevation for privs.</p>
|
|
</li>
|
|
<li>
|
|
<p>ISSUE: Sessions currently indicate all read-write types as the same access scope type.</p>
|
|
</li>
|
|
<li>
|
|
<p>CHANGE: Split sessions to show rwalways, rwcapable, rwactive</p>
|
|
</li>
|
|
<li>
|
|
<p>ISSUE: Sessions currently are recorded identically between service-accounts, persons, and api
|
|
tokens</p>
|
|
</li>
|
|
<li>
|
|
<p>CHANGE: Change the session storage types to have unique session types for these ✅</p>
|
|
</li>
|
|
<li>
|
|
<p>ISSUE: Access Scope types are confused by api session using the same types.</p>
|
|
</li>
|
|
<li>
|
|
<p>CHANGE: Use access scope only as the end result of current effective permission calculation and
|
|
not as a method to convert to anything else. ✅</p>
|
|
<p>AccessScope { ReadOnly, ReadWrite, Synchronise }</p>
|
|
<p>// Bound by token expiry ApiTokenScope { ReadOnly, ReadWrite, Synchronise }</p>
|
|
<p>UatTokenScope { ReadOnly, // Want to avoid "read write" here to prevent dev confusion.
|
|
PrivilegeCapable, PrivilegeActive { expiry }, ReadWrite, }</p>
|
|
<p>SessionScope { Ro, RwAlways, PrivCapable, }</p>
|
|
<p>ApiTokenScope { RO RW Sync }</p>
|
|
<p>AuthSession if service account rw always, bound expiry</p>
|
|
<pre><code>if person
|
|
priv cap, unbound exp
|
|
- Should we have a "trust the machine flag" to limit exp though?
|
|
- can we do other types of cryptographic session binding?
|
|
</code></pre>
|
|
</li>
|
|
</ul>
|
|
<h2 id="session-validation"><a class="header" href="#session-validation">Session Validation</a></h2>
|
|
<ul>
|
|
<li>CHANGE: Session with PrivCapable indicates that re-auth can be performed.</li>
|
|
<li>CHANGE: Improve how Uat/Api Token scopes become Access Scopes</li>
|
|
<li>CHANGE: Remove all AccessScope into other types. ✅</li>
|
|
</ul>
|
|
<h2 id="session-re-authentication"><a class="header" href="#session-re-authentication">Session Re-Authentication</a></h2>
|
|
<ul>
|
|
<li>
|
|
<p>Must be performed by the same credential that issued the session originally</p>
|
|
<ul>
|
|
<li>This is now stored in the session metadata itself.</li>
|
|
<li>Does it need to be in the cred-id?</li>
|
|
</ul>
|
|
</li>
|
|
<li>
|
|
<p>CHANGE: Store the cred id in UAT so that a replica can process the operation in a replication sync
|
|
failure?</p>
|
|
<ul>
|
|
<li>This would rely on re-writing the session.</li>
|
|
</ul>
|
|
</li>
|
|
<li>
|
|
<p>CHANGE: Should we record in the session when priv-escalations are performed?</p>
|
|
</li>
|
|
</ul>
|
|
<h2 id="misc"><a class="header" href="#misc">Misc</a></h2>
|
|
<ul>
|
|
<li>CHANGE: Compact/shrink UAT size if possible.</li>
|
|
</ul>
|
|
<h2 id="diagram"><a class="header" href="#diagram">Diagram</a></h2>
|
|
<pre><code> Set
|
|
┌───────────────────────PrivActive────────────────────┐
|
|
│ + Exp │
|
|
│ │
|
|
┌ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ┐ │ .───────────. ┌────────────────┐
|
|
│ ┌────────────────▶( If Priv Cap )───────▶│Re-Auth-Allowed │
|
|
│ │ │ │ `───────────' └────────────────┘
|
|
DB Content ┌ ─ ─ ─ ┼ ─ ┼ ─ ─ ─ ─ ─ ─ ─ ─
|
|
┌───────────────────┐ │ │ JWT │ │ │
|
|
│ │ │ ▼ │
|
|
│ AuthSession │ │ ┌──────────────┐ │ ┌──────────────┐ │
|
|
│ │ │SessionScope │ │ │UatScope │
|
|
│ Service Account │ │ │- RO │ │ │- RO │ │
|
|
│ -> RWAlways │──────────────────▶│- RW │─────────┼──▶│- RW │──────────────────────────┐
|
|
│ │ │ │- PrivCapable │ │ │- PrivCapable │ │ │
|
|
│ Person │ └──────────────┘ │ │- PrivActive │ │
|
|
│ -> PrivCap │ │ │ └──────────────┘ │ │
|
|
│ │ │ │
|
|
└───────────────────┘ │ │ │ ▼
|
|
│ ┌──────────────┐
|
|
│ │ │ │AccessScope │ ┌───────────────┐
|
|
│ │- RO │ │ │
|
|
│ │ │ │- RW │───────────▶ │Access Controls│
|
|
│ │- Sync │ │ │
|
|
┌───────────────────┐ │ ┌─────────────────┐ │ ┌──────────────┐ │ └──────────────┘ └───────────────┘
|
|
│ │ │ApiSessionScope │ │ │ApiTokenScope │ ▲
|
|
│ Create API Token │ │ │- RO │ │ │- RO │ │ │
|
|
│ │───────────────▶│- RW │────────┼───▶│- RW │─────────────────────────┘
|
|
│Access Based On Req│ │ │- Sync │ │ │- Sync │ │
|
|
│ │ └─────────────────┘ │ │ │
|
|
└───────────────────┘ │ │ └──────────────┘ │
|
|
│
|
|
│ │ │
|
|
─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ └ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─
|
|
</code></pre>
|
|
<h2 id="todo"><a class="header" href="#todo">TODO:</a></h2>
|
|
<ol>
|
|
<li>Remove the ident-only access scope, it's useless! ✅</li>
|
|
<li>Split tokens to have a dedicated session type separate to uat sessions. ✅</li>
|
|
<li>Change uat session access scope recording to match service-account vs person intent.</li>
|
|
<li>Change UAT session issuance to have the uat purpose reflect the readwrite or readwrite-capable
|
|
nature of the session, based on <em>auth-type</em> that was used.</li>
|
|
<li>Based on auth-type, limit or unlimit expiry to match the intent of the session.</li>
|
|
</ol>
|
|
|
|
</main>
|
|
|
|
<nav class="nav-wrapper" aria-label="Page navigation">
|
|
<!-- Mobile navigation buttons -->
|
|
<a rel="prev" href="../../developers/designs/rest_interface.html" class="mobile-nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left">
|
|
<i class="fa fa-angle-left"></i>
|
|
</a>
|
|
|
|
<a rel="next" href="../../developers/designs/oauth2_refresh_tokens.html" class="mobile-nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
|
|
<i class="fa fa-angle-right"></i>
|
|
</a>
|
|
|
|
<div style="clear: both"></div>
|
|
</nav>
|
|
</div>
|
|
</div>
|
|
|
|
<nav class="nav-wide-wrapper" aria-label="Page navigation">
|
|
<a rel="prev" href="../../developers/designs/rest_interface.html" class="nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left">
|
|
<i class="fa fa-angle-left"></i>
|
|
</a>
|
|
|
|
<a rel="next" href="../../developers/designs/oauth2_refresh_tokens.html" class="nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
|
|
<i class="fa fa-angle-right"></i>
|
|
</a>
|
|
</nav>
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<script>
|
|
window.playground_copyable = true;
|
|
</script>
|
|
|
|
|
|
<script src="../../elasticlunr.min.js"></script>
|
|
<script src="../../mark.min.js"></script>
|
|
<script src="../../searcher.js"></script>
|
|
|
|
<script src="../../clipboard.min.js"></script>
|
|
<script src="../../highlight.js"></script>
|
|
<script src="../../book.js"></script>
|
|
|
|
<!-- Custom JS scripts -->
|
|
|
|
|
|
</div>
|
|
</body>
|
|
</html>
|