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bascule's profile
Tony Arcieri
Tony Arcieri
Tony Arcieri
@bascule

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Tony Arcieri

@bascule

Co-founder @iqlusioninc, formerly @square @chain. Cryptography dilettante, polyglot programmer, key management wrangler, and infrastructure security specialist

San Francisco, CA
tonyarcieri.com
Joined May 2007

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    1. Ryan Sleevi‏ @sleevi_ 22 Feb 2015
      Replying to @kebesays

      @kebesays @bascule @AlecMuffett Playing with JSON is begging yourself for DOS or security fail. Case in point: JOSE and the crazy schemas

      2 replies 0 retweets 0 likes
    2. Tony Arcieri‏ @bascule 22 Feb 2015
      Replying to @sleevi_

      @sleevi_ @kebesays @AlecMuffett and the corresponding analogue for ASN.1 is RCE?

      1 reply 0 retweets 1 like
    3. Ryan Sleevi‏ @sleevi_ 22 Feb 2015
      Replying to @bascule

      @bascule @kebesays @AlecMuffett With DER parsing, a little fuzzing and ASAN goes a long way. With JSON, it's logic bugs all the way down.

      2 replies 0 retweets 0 likes
    4. Tony Arcieri‏ @bascule 22 Feb 2015
      Replying to @sleevi_

      @sleevi_ @kebesays @AlecMuffett we've been systematically replacing CMS with JWE/JWS throughout our infrastructure and it feels great

      2 replies 0 retweets 0 likes
    5. mik‏ @mik235 22 Feb 2015
      Replying to @bascule

      @bascule @sleevi_ @kebesays @AlecMuffett I go for CSV, and if there's a new field conflict we sort it out with rock-paper-scissors

      1 reply 0 retweets 0 likes
    6. Tony Arcieri‏ @bascule 22 Feb 2015
      Replying to @mik235

      @mik235 @sleevi_ @kebesays @AlecMuffett that particular property of JSON is definitely a LANGSEC violation...

      1 reply 0 retweets 0 likes
    7. mik‏ @mik235 22 Feb 2015
      Replying to @bascule

      @bascule @sleevi_ @kebesays @AlecMuffett arguing XML vs JSON vs ASN.1 is a stupid argument. They all do too much AND not enough.

      1 reply 0 retweets 0 likes
    8. mik‏ @mik235 22 Feb 2015
      Replying to @mik235

      @bascule @sleevi_ @kebesays @AlecMuffett but sometimes you just need to pick a winner, make it work and move on. Life's too short.

      2 replies 0 retweets 0 likes
    9. Tony Arcieri‏ @bascule 22 Feb 2015
      Replying to @mik235

      @mik235 @sleevi_ @kebesays @AlecMuffett XML and ASN.1 seem to be frequently associated with remote code execution or severe parsing bugs

      1 reply 0 retweets 0 likes
    10. mik‏ @mik235 22 Feb 2015
      Replying to @bascule

      @bascule @sleevi_ @kebesays @AlecMuffett that's more about the code. Look at libxml2 bugs vs Chrome/Firefox bugs.

      2 replies 0 retweets 0 likes
      Tony Arcieri‏ @bascule 22 Feb 2015
      Replying to @mik235

      @mik235 @sleevi_ @kebesays @AlecMuffett I'm sure Chrome and Firefox do a great job, but XML is everywhere and extremely dangerous

      4:50 PM - 22 Feb 2015
      2 replies 0 retweets 0 likes
        1. Tony Arcieri‏ @bascule 22 Feb 2015
          Replying to @bascule

          @mik235 @sleevi_ @kebesays @AlecMuffett two words: SAML XXE

          0 replies 0 retweets 0 likes
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        2. mik‏ @mik235 22 Feb 2015
          Replying to @bascule

          @bascule @sleevi_ @kebesays @AlecMuffett XML is extremely dangerous. But libxml2 is the problem with RCE bugs, not XML :)

          2 replies 0 retweets 0 likes
        3. Tony Arcieri‏ @bascule 22 Feb 2015
          Replying to @mik235

          @mik235 @sleevi_ @kebesays @AlecMuffett uh, XXE?

          1 reply 0 retweets 0 likes
        4. Tony Arcieri‏ @bascule 22 Feb 2015
          Replying to @bascule

          @mik235 @sleevi_ @kebesays @AlecMuffett like this: http://www.ubercomp.com/posts/2014-01-16_facebook_remote_code_execution …

          1 reply 0 retweets 0 likes
        5. Tony Arcieri‏ @bascule 22 Feb 2015
          Replying to @bascule

          @mik235 @sleevi_ @kebesays @AlecMuffett or this: http://blog.sendsafely.com/post/69590974866/web-based-single-sign-on-and-the-dangers-of-saml …

          1 reply 0 retweets 0 likes
        6. Tony Arcieri‏ @bascule 22 Feb 2015
          Replying to @bascule

          @mik235 @sleevi_ @kebesays @AlecMuffett or this: https://support.f5.com/kb/en-us/solutions/public/15000/600/sol15605.html …

          1 reply 0 retweets 0 likes
        7. mik‏ @mik235 22 Feb 2015
          Replying to @bascule

          @bascule @sleevi_ @kebesays @AlecMuffett I thought that was covered by the "XML is awful, but" part =)

          1 reply 0 retweets 0 likes
        8. mik‏ @mik235 22 Feb 2015
          Replying to @mik235

          @bascule @sleevi_ @kebesays @AlecMuffett you could get code exec by using javascript eval() for json. Or unpickling a function object, ...

          1 reply 0 retweets 0 likes
        9. Tony Arcieri‏ @bascule 22 Feb 2015
          Replying to @mik235

          @mik235 inside the browser, as opposed to on a server? Unless you mean Node in which case lolololol Node

          1 reply 0 retweets 0 likes
        10. 5 more replies

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