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2 votes
1 answer
615 views

How can javascript files represent a flash-based XSS vulnerability?

I am hosting a static website (no PHP etc., just HTML/JavaScript/CSS) with a security-conscious hoster that proactively removes vulnerable files. This is fine with me. However, their last report ...
Marcel's user avatar
  • 4,143
1 vote
0 answers
178 views

Load non-existent flash file through service worker

Using Service Workers it is possible to load non-existent files with the fetch event handler, however this does not seem to work when loading flash files. Is there any way in any browser to do this ...
Zeta Two's user avatar
  • 446
1 vote
1 answer
630 views

Stealing user cookies with flash/actionscript

I know I am asking a dumb question here, but pardon me, I am learning. I found two questions viz, How do I access cookies within Flash? and How to Make a button send an email using AS3 automatically....
Anonymous Platypus's user avatar
3 votes
1 answer
393 views

Is it possible to get a flash src after a redirect or an element inside an embed/object/iframe tag (cross-domain)?

The URL example.com/auth will automatically redirect the user (HTTP 302) to example.com/signed_in.SWF?token=SENSITIVE. Is it possible for an attacker to steal the token, using javascript or flash, in ...
user avatar
3 votes
1 answer
2k views

How is Cross Site Flashing performed?

I read about cross site flashing in the OWASP testing guide. I know the difference between XSS and XSF. But what I am looking for is how attackers perform a XSF attack. How is it possible since there ...
Anandu M Das's user avatar
  • 2,097
0 votes
1 answer
312 views

What is the difference between XSS and Cross Site Flashing? [duplicate]

I want to know the basic differences between XSS and XSF
Anandu M Das's user avatar
  • 2,097
0 votes
1 answer
680 views

Flash Objects SWF security (ExternalInterface.call)

I am performing a penetration test against a website that uses Flash. I found this piece of code: url = ExternalInterface.call("window.document.location.href.toString") as String; How it can be ...
user1675137's user avatar
4 votes
3 answers
2k views

Flash ignores Content-Type header, allowing XSS?

I recently read that the Flash plugin ignores the Content-Type header in certain circumstances. In particular, you can give Flash a URL, and the Flash plugin will happily fetch the content at that ...
D.W.'s user avatar
  • 100k
3 votes
2 answers
870 views

Exploiting flash XSS holes

I have a URL to a flash file. Sample :- http://abc.mydomain.com/Findme.swf Now, there is a parameter called xmlpath as :- http://abc.mydomain.com/Findme.swf?xmlPath=something. Is it not that ...
qre0ct's user avatar
  • 1,522
1 vote
1 answer
610 views

Need an explanation of Cross-Site Flashing?

I found this - can anyone provide me examples of how these issues are exploited?
Daniel's user avatar
  • 1,452
2 votes
2 answers
327 views

For untrusted user upload sites: what should the contents of crossdomain.xml and clientaccesspolicy.xml be?

Flash has a long history of ignoring MIME types of files and reading the file directly for executable content or for cross domain execution permissions. That means a malicious user can take advantage ...
makerofthings7's user avatar
3 votes
1 answer
2k views

XSS in SWF file

I have the following code in an SWF file that a vulnerability scanner marks as XSS: // Action0 { var __callResult_6 = getURL(_root.thankYou, "_self"); var __callResult_7 = stop(); ...
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