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BRIAN_____'s profile
Brian Smith
Brian Smith
Brian Smith
@BRIAN_____

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Brian Smith

@BRIAN_____

Code farmer. Security, crypto, performance, networking, usability. Rust, C++, C, Haskell, DSLs, etc. *ring*, webpki, crypto-bench, mozilla::pkix.

Honolulu & San Francisco
briansmith.org
Joined April 2008

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    1. Devdatta Akhawe‏ @frgx 27 Jun 2015

      Interesting exploit http://joevennix.com/2015/06/24/Adventures-in-Browser-Exploitation-Part-II--Safari-8-UXSS.html … How much more powerful do web/browser APIs need to get until all agree UXSS == arbit code exec?

      2 replies 7 retweets 15 likes
      Brian Smith‏ @BRIAN_____ 27 Jun 2015
      Replying to @frgx

      @frgx I think we already have to consider UXSS like arbit code exec. But, arbit code exec is more powerful because it is a superset of UXSS.

      8:42 PM - 27 Jun 2015
      1 reply 0 retweets 0 likes
        1. New conversation
        2. Devdatta Akhawe‏ @frgx 27 Jun 2015
          Replying to @BRIAN_____

          @BRIAN_____ yeah; anecdotally though, response times to fixing UXSS seem to be much worse than arbitrary code exec

          1 reply 0 retweets 0 likes
        3. Devdatta Akhawe‏ @frgx 27 Jun 2015
          Replying to @frgx

          @BRIAN_____ also, as a though experiment: what about arbitrary code exec limited to one platform while UXSS on all?

          1 reply 0 retweets 1 like
        4. Adrienne Porter Felt‏Verified account @__apf__ 27 Jun 2015
          Replying to @frgx

          @frgx @BRIAN_____ powerful APIs require user interaction, and user interaction always downgrades severity

          1 reply 0 retweets 1 like
        5. Devdatta Akhawe‏ @frgx 27 Jun 2015
          Replying to @__apf__

          @__apf__ UXSS will use the permissions granted to trusted websites. No User interaction needed. @BRIAN_____

          2 replies 0 retweets 0 likes
        6. Adrienne Porter Felt‏Verified account @__apf__ 27 Jun 2015
          Replying to @frgx

          @frgx @BRIAN_____ assuming you visit one; still a higher bar

          1 reply 0 retweets 0 likes
        7. Adrienne Porter Felt‏Verified account @__apf__ 27 Jun 2015
          Replying to @__apf__

          @frgx @BRIAN_____ and we're moving to reprompt for iframes so that doesn't work either

          0 replies 0 retweets 0 likes
        8. End of conversation

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