Bug 61576 - Consider adding "scrub-referrer" directive to CSP
: Consider adding "scrub-referrer" directive to CSP
Status: RESOLVED LATER
Product: WebKit
Classification: Unclassified
Component: WebCore Misc.
: 528+ (Nightly build)
: All All
: P2 Normal
Assigned To: Nobody
:
Depends on:
Blocks: 53572
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Reported: 2011-05-26 16:12 PDT by Adam Barth
Modified: 2011-10-13 12:44 PDT (History)
3 users (show)

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Description Adam Barth 2011-05-26 16:12:57 PDT
Lots of sensitive information leaks in the Referer header.  This paper has a bunch of scary examples:

http://w2spconf.com/2011/papers/privacyVsProtection.pdf

I'm not sure whether we can scrub the Referer header by default because lots of folks use the Referer header for all kinds of crazy stuff, but we should at least give sites an easy hook for scrubbing it.  There probably should be a couple options:

1) Remove header entirely.
2) Strip down the Referer to just the origin.
Comment 1 Adam Barth 2011-10-13 12:44:40 PDT
Maybe in a future version of CSP.