Bug 66579 - [meta] XSSAuditor should have fewer false negatives
: [meta] XSSAuditor should have fewer false negatives
Status: NEW
: WebKit
WebCore Misc.
: 528+ (Nightly build)
: All All
: P2 Normal
Assigned To:
:
: XSSAuditor
: 27895 29278 66580 66585 66588 66850 67091 67134 68094 68281 70255
:
  Show dependency treegraph
 
Reported: 2011-08-19 13:26 PST by
Modified: 2011-10-17 12:22 PST (History)


Attachments


Note

You need to log in before you can comment on or make changes to this bug.


Description From 2011-08-19 13:26:50 PST
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).