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fix(editor): Prevent clipboard xss injection (#10894)

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Raúl Gómez Morales 2024-09-20 12:51:18 +02:00 committed by GitHub
parent 48294e7ec1
commit e20ab59c1d
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4 changed files with 18 additions and 18 deletions
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15
packages/editor-ui/src/composables/__tests__/useClipboard.test.ts
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@ -1,4 +1,4 @@
import { render, within } from '@testing-library/vue';
import { render } from '@testing-library/vue';
import userEvent from '@testing-library/user-event';
import { defineComponent, h, ref } from 'vue';
import { useClipboard } from '@/composables/useClipboard';
@ -8,13 +8,9 @@ const testValue = 'This is a test';
const TestComponent = defineComponent({
setup() {
const pasted = ref('');
const htmlContent = ref<HTMLElement>();
const clipboard = useClipboard({
onPaste(data) {
pasted.value = data;
if (htmlContent.value) {
htmlContent.value.innerHTML = data;
}
},
});
@ -27,7 +23,6 @@ const TestComponent = defineComponent({
},
}),
h('div', { 'data-test-id': 'paste' }, pasted.value),
h('div', { 'data-test-id': 'xss-attack', ref: htmlContent }),
]);
},
});
@ -73,12 +68,4 @@ describe('useClipboard()', () => {
expect(pasteElement.textContent).toEqual(testValue);
});
});
it('sanitizes HTML', async () => {
const unsafeHtml = 'https://www.ex.com/sfefdfd<img/src/onerror=alert(1)>fdf/xdfef.json';
const { getByTestId } = render(TestComponent);
await userEvent.paste(unsafeHtml);
expect(within(getByTestId('xss-attack')).queryByRole('img')).not.toBeInTheDocument();
});
});

3
packages/editor-ui/src/composables/useClipboard.ts
View file

@ -1,7 +1,6 @@
import { onBeforeUnmount, onMounted, ref } from 'vue';
import { useClipboard as useClipboardCore } from '@vueuse/core';
import { useDebounce } from '@/composables/useDebounce';
import { sanitizeIfString } from '@/utils/htmlUtils';
type ClipboardEventFn = (data: string, event?: ClipboardEvent) => void;
@ -43,7 +42,7 @@ export function useClipboard(
const clipboardData = event.clipboardData;
if (clipboardData !== null) {
const clipboardValue = sanitizeIfString(clipboardData.getData('text/plain'));
const clipboardValue = clipboardData.getData('text/plain');
onPasteCallback.value(clipboardValue, event);
}
}

14
packages/editor-ui/src/utils/__tests__/htmlUtils.spec.ts
View file

@ -37,4 +37,18 @@ describe('sanitizeHtml', () => {
const result = sanitizeHtml(dirtyHtml);
expect(result).toBe('<a>Click me</a>');
});
test.each([
[
'https://www.ex.com/sfefdfd<img/src/onerror=alert(1)>fdf/xdfef.json',
'https://www.ex.com/sfefdfdfdf/xdfef.json',
],
[
// eslint-disable-next-line n8n-local-rules/no-unneeded-backticks
`https://www.ex.com/sfefdfd<details title='"><img/src/onerror=alert(document.domain)>/ '>/c.json`,
'https://www.ex.com/sfefdfd<details title="&quot;&gt;&lt;img/src/onerror=alert(document.domain)&gt;/">/c.json',
],
])('should escape js code %s to equal %s', (dirtyURL, expected) => {
expect(sanitizeHtml(dirtyURL)).toBe(expected);
});
});

4
packages/editor-ui/src/utils/htmlUtils.ts
View file

@ -1,4 +1,4 @@
import xss, { friendlyAttrValue } from 'xss';
import xss, { escapeAttrValue } from 'xss';
import { ALLOWED_HTML_ATTRIBUTES, ALLOWED_HTML_TAGS } from '@/constants';
/*
@ -22,7 +22,7 @@ export function sanitizeHtml(dirtyHtml: string) {
if (name === 'href' && !value.match(/^https?:\/\//gm)) {
return '';
}
return `${name}="${friendlyAttrValue(value)}"`;
return `${name}="${escapeAttrValue(value)}"`;
}
return;