Bug 66579 - [meta] XSSAuditor should have fewer false negatives
: [meta] XSSAuditor should have fewer false negatives
Status: NEW
Product: WebKit
Classification: Unclassified
Component: WebCore Misc.
: 528+ (Nightly build)
: All All
: P2 Normal
Assigned To: Nobody
: XSSAuditor
Depends on: 27895 29278 66580 66585 66588 66850 67091 67134 68094 68281 70255
Blocks:
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Reported: 2011-08-19 13:26 PDT by Adam Barth
Modified: 2011-10-17 12:22 PDT (History)
1 user (show)

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Description Adam Barth 2011-08-19 13:26:50 PDT
Currently the XSSAuditor has very few false positives, but it does have a number of false negatives.  False negatives a problematic because they let attackers bypass the filter, negating some of its security benefits.  False positives fall into two categories:

1) Tricky injections into in-scope injection contexts.
2) Injections into out-of-scope injection contexts.

Whether an injection context is in-scope is somewhat of an arbitrary distinction, but we should aim to tackle all the tricky injection vectors for the in-scope injection contexts before we expand to consider more contexts in-scope.  This approach puts us on a path to eliminating all the attack vectors for a given set of vulnerabilities rather than catching some, but not all, the attack vectors for a large number of vulnerabilities.

Let's use this bug as a meta bug for Type 1 vulnerabilities (which will appear as blocking this bug).