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arturjanc's profile
Artur Janc
Artur Janc
Artur Janc
@arturjanc

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Artur Janc

@arturjanc

Making the web platform more secure one Twitter flamewar at a time.

Zurich, Switzerland
Joined February 2012

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    1. Artur Janc‏ @arturjanc May 20
      Replying to @johnwilander @kkotowicz

      Unfortunately there's very little chance of this working. CSP tried getting developrs to remove inline <script>s and failed miserably, for a myriad of reasons.

      1 reply 1 retweet 4 likes
    2. John Wilander‏ @johnwilander May 20
      Replying to @arturjanc @kkotowicz

      The vague carrot of “you may not be hacked” plus complexity killed CSP. Next try should apply more stick. The web as a platform for business, communication etc. deserves much better than XSS whack-a-mole because developers want inline scripts. Tragedy of the commons.

      1 reply 0 retweets 2 likes
    3. koto‏ @kkotowicz May 20
      Replying to @johnwilander @arturjanc

      You're proposing an app store that happens to use http. That's not the web platform.

      1 reply 0 retweets 3 likes
    4. John Wilander‏ @johnwilander May 20
      Replying to @kkotowicz @arturjanc

      That’s not what I’m proposing at all. I merely propose that websites only run their own code.

      1 reply 0 retweets 1 like
    5. koto‏ @kkotowicz May 20
      Replying to @johnwilander @arturjanc

      The web has that feature - it's script-src self (+whitelists for the site/etld+1). It's opt in, and the adoption rate is poor for many reasons. Mandating it seems like a very difficult task, as very few authors would want to have such limitations.

      1 reply 0 retweets 2 likes
    6. John Wilander‏ @johnwilander May 20
      Replying to @kkotowicz @arturjanc

      That is the tragedy of the commons. Developers want the freedom but not the consequences. Endusers are deceived and pay the price. We can do something about it.

      2 replies 0 retweets 1 like
    7. koto‏ @kkotowicz May 20
      Replying to @johnwilander @arturjanc

      XSS, for the most part, is not caused by distributed code loading in your app. It lurks in a total codebase complexity of modern apps, and a lack of safe defaults. Changing domain names does not solve XSS.

      3 replies 3 retweets 6 likes
    8. John Wilander‏ @johnwilander May 20
      Replying to @kkotowicz @arturjanc

      I believe you’re talking about bugs. I’m talking about what scripts get executed. Only files and only from your domain or from one chosen CDN with your own eTLD+1 scope and checked through SRI. Any other script will not be executed.

      1 reply 0 retweets 0 likes
    9. Damned Whey-pits‏ @dveditz May 20
      Replying to @johnwilander @kkotowicz @arturjanc

      Yes, koto started the thread talking about XSS which is a class of bugs. You're talking about intentional 3rd party scripts. That's not XSS. Unlikely to go away unless we find a non-advertising model for the web.

      2 replies 0 retweets 5 likes
    10. John Wilander‏ @johnwilander May 20
      Replying to @dveditz @kkotowicz @arturjanc

      I think it’s XSS if you don’t have SRI, because any XSS, compromise, or ill will from that server and you’re running arbitrary code on your pages. Cross-Site Scripting – it’s in the name.

      3 replies 0 retweets 0 likes
      Artur Janc‏ @arturjanc May 20
      Replying to @johnwilander @dveditz @kkotowicz

      You might want to consider what response you'll get from pretty much any company's bug bounty program if you report cross-origin JS loads as "XSS". Nomenclature matters ;)

      7:13 PM - 20 May 2018
      • 1 Like
      • koto
      1 reply 0 retweets 1 like
        1. John Wilander‏ @johnwilander May 20
          Replying to @arturjanc @dveditz @kkotowicz

          Sure. The name is not a biggie for me. I stand by that we should step by step get rid of 3rd-party scripting and inline scripting. It would really help the web.

          0 replies 0 retweets 1 like
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