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avlidienbrunn's profile
­Mathias Karlsson
­Mathias Karlsson
­Mathias Karlsson
@avlidienbrunn

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­Mathias Karlsson

@avlidienbrunn

Web security fiddler. Bug bounty bastard. CTF with @HackingForSoju.

mathiaskarlsson.me
Joined December 2011

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    1. Mathias Bynens‏Verified account @mathias 14 Feb 2014
      Replying to @Hacker0x01

      @Hacker0x01 And just like that, it’s gone! Thanks :)

      1 reply 0 retweets 0 likes
    2. HackerOne‏Verified account @Hacker0x01 14 Feb 2014
      Replying to @mathias

      @mathias thanks for bringing us to our senses!

      1 reply 0 retweets 0 likes
    3. ­Mathias Karlsson‏ @avlidienbrunn 14 Feb 2014
      Replying to @Hacker0x01

      @Hacker0x01 @mathias You should put it back, this is why: http://jsfiddle.net/PHLcU/2/show/ 

      1 reply 0 retweets 0 likes
    4. Mathias Bynens‏Verified account @mathias 14 Feb 2014
      Replying to @avlidienbrunn

      @avlidienbrunn That doesn’t apply here as @Hacker0x01 serves HTML with the `X-Frame-Options: DENY` header (and rightly so).

      1 reply 0 retweets 0 likes
    5. ­Mathias Karlsson‏ @avlidienbrunn 14 Feb 2014
      Replying to @mathias

      @mathias @Hacker0x01 Doesn't help on same-domain: http://jsfiddle.net/avwUm/show/ 

      1 reply 0 retweets 1 like
    6. Mathias Bynens‏Verified account @mathias 14 Feb 2014
      Replying to @avlidienbrunn

      @avlidienbrunn But it does, unless you use `X-Frame-Options: SAMEORIGIN` or `ALLOW-FROM: …` which @Hacker0x01 doesn’t.

      1 reply 0 retweets 0 likes
    7. ­Mathias Karlsson‏ @avlidienbrunn 14 Feb 2014
      Replying to @mathias

      @mathias @Hacker0x01 You don't have to frame it to access the content. See my second example. You can use window.open().

      2 replies 0 retweets 0 likes
    8. Mathias Bynens‏Verified account @mathias 14 Feb 2014
      Replying to @avlidienbrunn

      @avlidienbrunn You could abuse this if there’s XSS on the login page, but then you can log keystrokes anyway, autofill or not. @Hacker0x01

      1 reply 0 retweets 0 likes
    9. ­Mathias Karlsson‏ @avlidienbrunn 14 Feb 2014
      Replying to @mathias

      @mathias @Hacker0x01 The XSS can be anywhere on the domain. Still one-click owned, and that's pretty shitty tbh: http://jsfiddle.net/avwUm/6/show/ 

      2 replies 0 retweets 1 like
    10. Mathias Bynens‏Verified account @mathias 14 Feb 2014
      Replying to @avlidienbrunn

      @avlidienbrunn My point is: XSS is a separate issue that is dangerous, with or without autofill. +@Hacker0x01

      1 reply 0 retweets 0 likes
      ­Mathias Karlsson‏ @avlidienbrunn 14 Feb 2014
      Replying to @mathias

      @mathias It's more dangerous if the attacker can get plaintext credentials. It's about mitigation, just like CSP and whatnot. +@Hacker0x01

      2:36 AM - 14 Feb 2014
      1 reply 0 retweets 0 likes
        1. New conversation
        2. Mathias Bynens‏Verified account @mathias 14 Feb 2014
          Replying to @avlidienbrunn

          @avlidienbrunn I meant: you can still get plaintext credentials with autofill disabled using your trick. @Hacker0x01

          1 reply 0 retweets 0 likes
        3. ­Mathias Karlsson‏ @avlidienbrunn 14 Feb 2014
          Replying to @mathias

          @mathias @Hacker0x01 How?

          1 reply 0 retweets 0 likes
        4. Mathias Bynens‏Verified account @mathias 14 Feb 2014
          Replying to @avlidienbrunn

          Mathias Bynens Retweeted Mathias Bynens

          @avlidienbrunn https://twitter.com/mathias/status/434273706870075392 … +@Hacker0x01

          Mathias Bynens added,

          Mathias BynensVerified account @mathias
          Replying to @avlidienbrunn
          @avlidienbrunn Yeah, but you could do the same without autofill. Just read the password input’s value on submit. @Hacker0x01
          1 reply 0 retweets 0 likes
        5. ­Mathias Karlsson‏ @avlidienbrunn 14 Feb 2014
          Replying to @mathias

          @mathias @Hacker0x01 That requires *way* more user interaction and is not the same thing. 0 or 1 click versus phishing someone...

          0 replies 0 retweets 0 likes
        6. End of conversation

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