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Fix for mXSS bypass #123

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merged 1 commit into from
Jul 17, 2023
Merged

Fix for mXSS bypass #123

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31 changes: 31 additions & 0 deletions test/edge.js
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Original file line number Diff line number Diff line change
Expand Up @@ -310,4 +310,35 @@ describe('special cases', () => {
});
expect(['V,V,V']).toContain(result);
});

it('should fail to use atob of an iframe born out of mXSS (srcdoc)', async function () {
// reference: https://github.com/LavaMoat/snow/issues/91
if (global.BROWSER !== 'CHROME') {
this.skip();
}
const result = await browser.executeAsync(function(done) {
top.bypass = (wins) => top.TEST_UTILS.bypass(wins, done);
(function(){
testdiv.innerHTML = `<iframe
srcdoc="<form><math><mtext></form><form><mglyph><style></math><iframe src=&quot;javascript:top.bypass([window])&quot;></iframe>"
</iframe>`;
}());
});
expect(['CSP-script-src-elem']).toContain(result);
});

it('should fail to use atob of an iframe born out of mXSS (innerHTML)', async function () {
// reference: https://github.com/LavaMoat/snow/issues/91
if (global.BROWSER !== 'CHROME') {
this.skip();
}
const result = await browser.executeAsync(function(done) {
top.bypass = (wins) => top.TEST_UTILS.bypass(wins, done);
(function(){
testdiv.innerHTML = `<form><math><mtext></form><form><mglyph><style></math><iframe src="javascript:top.bypass([window])"></iframe>`;
testdiv.innerHTML = testdiv.innerHTML;
}());
});
expect(['CSP-script-src-elem']).toContain(result);
});
});