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security: close capability, CSP and auth-bridge holes

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capabilities/default.json
- Drop every `store:*` grant. `@tauri-apps/plugin-store` has no caller in
  `app/src`, and the plugin's `resolve_store_path` is a `PathBuf::push` against
  AppData — `push` discards the base for an absolute path, so the grant was an
  arbitrary host read/write from the webview.
- Replace `opener:default` with a scoped `opener:allow-open-url` (http/https
  only). That drops `reveal_item_in_dir`, which the plugin does not scope-check
  and nothing here calls, and the unused mailto:/tel: scope.
- Record the unscopable `drag:allow-start-drag` residual risk in `description`.

tauri.conf.json
- Add `form-action 'none'`, `base-uri 'none'`, `object-src 'none'`.
  `form-action` has no `default-src` fallback, so an injected auto-submitting
  form was unblocked even though `script-src 'self'` blocks XSS.
- Remove the dead `asset:` / `https://asset.localhost` img-src and `data:`
  font-src grants; `blob:` stays (the file viewer uses it).

auth_bridge
- The reserved-port set covered only this project's mappings and the two
  browser-view ranges. It now also covers the gateway, STT and web-terminal
  host ports (configured value and shipped default, read off the settings
  models) and every other project's published host port. A container binding
  container-loopback 4000 / 9876 / 7681 while those services were stopped had
  that port mirrored onto the host, unauthenticated, within one poll.
- Gate the host listener on fetch metadata: refuse a request that is a
  cross-site sub-resource, allow navigations (the OAuth redirect) and anything
  without `Sec-Fetch-*`. Non-HTTP connections are classified from their first
  line and forwarded verbatim. Residual risk is spelled out in the module docs.
- Bound the forwards: max concurrent connections per port, a first-byte
  deadline enforced before any `docker exec` is created, and an idle timeout.

browser_view/mod.rs
- `pick_viewer_port` reads procfs with `/usr/bin/cat`, not a bare `cat` the
  container can shim via its writable PATH entry.
- Treat port choice as check-then-bind: walk to the next free candidate when
  the viewer does not come up, instead of failing the start.

BrowserTab.tsx
- Sandbox the viewer iframe. Container-controlled content could `top.location`
  the app's webview away. `allow-top-navigation*` and
  `allow-popups-to-escape-sandbox` are deliberately absent.

HelpDialog.tsx
- Escape the quote characters in the entity pass and escape captured attribute
  values. `href="$2"` with `$2` = `[^)]+` let remote GitHub markdown close the
  attribute and open another, in a document rendered with
  `dangerouslySetInnerHTML`.

web_terminal/terminal.html
- SRI hashes plus `crossorigin` on the three jsdelivr bundles and the
  stylesheet, and a CSP for the page — it is served 0.0.0.0 behind a permissive
  CORS layer and nothing else gives it one.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GBq2rGum6GX7xXgsas1fDc
This commit is contained in:
shadow-test
2026-08-23 11:13:15 -07:00
co-authored by Claude Opus 5
parent 0003793abb
commit 092972fe92
10 changed files with 1066 additions and 72 deletions
Download Patch File Download Diff File Expand all files Collapse all files
app/src/components/layout/HelpDialog.tsx
+56 -7
View File
@@ -12,21 +12,67 @@ function slugify(text: string): string {
return text
.toLowerCase()
.replace(/<[^>]+>/g, "") // strip HTML tags (e.g. from inline code)
// Quote characters are escaped to entities before this runs (see
// `renderMarkdown`). Drop those two entities whole, so a header with an
// apostrophe or a quote slugifies to what it did when the character was
// simply stripped — otherwise every such anchor id silently changes and
// the in-document links pointing at it stop resolving. `&amp;`/`&lt;`/
// `&gt;` are deliberately not in this list: they were already entities
// before, so their existing (odd) slugs are the established ones.
.replace(/&quot;|&#39;/g, "")
.replace(/[^\w\s-]/g, "") // remove non-word chars except spaces/dashes
.replace(/\s+/g, "-") // spaces to dashes
.replace(/-+/g, "-") // collapse consecutive dashes
.replace(/^-|-$/g, ""); // trim leading/trailing dashes
}
/** Simple markdown-to-HTML converter for the help content. */
function renderMarkdown(md: string): string {
/**
* Escape a captured markdown value that is about to be interpolated into an
* HTML *attribute* value.
*
* `renderMarkdown` entity-escapes the whole document first, but that pass only
* covered `&`, `<` and `>` — not the quote characters, which is all an
* attribute value is delimited by. `[x](https://a" onload="…)` therefore closed
* `href="` and started a new attribute, because the URL capture is `[^)]+` and
* `"` is in `[^)]`. The document is remote GitHub markdown, so that capture is
* not ours to trust.
*
* Only quotes are escaped here: `&`, `<` and `>` have already been converted by
* the caller, and re-escaping the `&` would double-encode every `&amp;` in a
* query string.
*/
function attr(value: string): string {
return value.replace(/"/g, "&quot;").replace(/'/g, "&#39;");
}
/**
* Simple markdown-to-HTML converter for the help content.
*
* Exported for `HelpDialog.test.tsx`: the output goes to
* `dangerouslySetInnerHTML`, so the escaping rules below are security rules and
* need to be asserted rather than assumed.
*/
export function renderMarkdown(md: string): string {
let html = md;
// Normalize line endings
html = html.replace(/\r\n/g, "\n");
// Escape HTML entities (but we'll re-introduce tags below)
html = html.replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;");
// Escape HTML entities (but we'll re-introduce tags below).
//
// The quote characters are part of this on purpose. Everything below builds
// HTML by regex substitution, and several of those substitutions drop a
// capture straight into an attribute value (`href="$2"`). Leaving `"` and `'`
// live meant a link target could close the attribute and open another one —
// in a document fetched from GitHub at runtime and handed to
// `dangerouslySetInnerHTML`. Escaping here closes every such sink at the
// source; `attr()` below is the belt to this pair of braces.
html = html
.replace(/&/g, "&amp;")
.replace(/</g, "&lt;")
.replace(/>/g, "&gt;")
.replace(/"/g, "&quot;")
.replace(/'/g, "&#39;");
// Fenced code blocks (```...```)
html = html.replace(/```(\w*)\n([\s\S]*?)```/g, (_m, _lang, code) => {
@@ -84,13 +130,15 @@ function renderMarkdown(md: string): string {
// Markdown-style anchor links [text](#anchor)
html = html.replace(
/\[([^\]]+)\]\(#([^)]+)\)/g,
'<a class="help-link" href="#$2">$1</a>',
(_m, text: string, anchor: string) =>
`<a class="help-link" href="#${attr(anchor)}">${text}</a>`,
);
// Markdown-style external links [text](url)
html = html.replace(
/\[([^\]]+)\]\((https?:\/\/[^)]+)\)/g,
'<a class="help-link" href="$2" target="_blank" rel="noopener noreferrer">$1</a>',
(_m, text: string, url: string) =>
`<a class="help-link" href="${attr(url)}" target="_blank" rel="noopener noreferrer">${text}</a>`,
);
// Unordered list items (- ...)
@@ -117,7 +165,8 @@ function renderMarkdown(md: string): string {
// Links - convert bare URLs to clickable links (skip already-wrapped URLs)
html = html.replace(
/(?<!="|'>)(https?:\/\/[^\s<)]+)/g,
'<a class="help-link" href="$1" target="_blank" rel="noopener noreferrer">$1</a>',
(_m, url: string) =>
`<a class="help-link" href="${attr(url)}" target="_blank" rel="noopener noreferrer">${url}</a>`,
);
// Wrap remaining loose text lines in paragraphs