Bug 185331 - Cross-Origin Read Blocking (CORB)
Summary: Cross-Origin Read Blocking (CORB)
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: WebCore Misc. (show other bugs)
Version: WebKit Nightly Build
Hardware: All All
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2018-05-04 15:51 PDT by Łukasz Anforowicz
Modified: 2018-09-16 15:00 PDT (History)
5 users (show)

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Description Łukasz Anforowicz 2018-05-04 15:51:25 PDT
Cross-origin read blocking, better known as CORB, is an algorithm by which dubious cross-origin resource fetches are identified and blocked before they reach a web page. CORB reduces the risk of leaking sensitive data by keeping it further from cross-origin web pages.  In most browsers, it keeps such data out of untrusted script execution contexts. In browsers with Site Isolation, it can keep such data out of untrusted renderer processes entirely, helping even against side channel attacks.

More info:
- Explainer: https://chromium.googlesource.com/chromium/src/+/master/services/network/cross_origin_read_blocking_explainer.md
- WhatWG issue: https://github.com/whatwg/fetch/issues/681
- PR for Fetch spec changes: https://github.com/whatwg/fetch/pull/686
- Initial public support that CORB is a good idea: https://github.com/whatwg/fetch/issues/687
Comment 1 Radar WebKit Bug Importer 2018-05-04 15:51:37 PDT
<rdar://problem/39992149>
Comment 2 Brent Fulgham 2018-05-08 17:26:50 PDT
This is actually:

<rdar://problem/38878150>
Comment 3 Daniel Bates 2018-09-16 15:00:04 PDT
This is not a security-sensitive bug.