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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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    Tony Arcieri‏ @bascule 24 Mar 2015

    CVE-2015-1828: HTTPS MitM vulnerability in http.rb:https://groups.google.com/forum/?hl=en#!topic/httprb/jkb4oxwZjkU …

    5:31 PM - 24 Mar 2015
    • 32 Retweets
    • 21 Likes
    • Adam Caudill Frank S. Rietta Masao Uebayashi mr. waddlesplash Brian T. Rice k🌙 Simon Loffler evan j Verithium
    5 replies 32 retweets 21 likes
      1. New conversation
      2. Tony Arcieri‏ @bascule 24 Mar 2015
        Replying to @bascule

        My first CVE. Guess I'm a real security engineer now?

        6 replies 0 retweets 28 likes
      3. Ben Nagy‏ @rantyben 24 Mar 2015
        Replying to @bascule

        @bascule nice catch. One wonders how this wasn’t tested. Oh wait, ruby SSL code. No one doesn’t.

        1 reply 0 retweets 1 like
      4. Tony Arcieri‏ @bascule 24 Mar 2015
        Replying to @rantyben

        @rantyben it’s my fault (for not calling an undocumented method). All my other projects have SSL verification tests :(

        0 replies 0 retweets 0 likes
      5. End of conversation
      1. New conversation
      2. Tony Arcieri‏ @bascule 24 Mar 2015
        Replying to @bascule

        A fitting time to link this paper again: https://www.cs.utexas.edu/~shmat/shmat_ccs12.pdf …

        1 reply 1 retweet 8 likes
      3. 1 more reply
      1. New conversation
      2. Ryan Sleevi‏ @sleevi_ 24 Mar 2015
        Replying to @bascule

        @bascule did you fix with RFC6125 compliant validator? Or check name constraints in CN despite no RFC telling you you need to? :D

        1 reply 0 retweets 0 likes
      3. Tony Arcieri‏ @bascule 24 Mar 2015
        Replying to @sleevi_

        @sleevi_ the fix was "hey OpenSSL, you figure it out". So uh, you tell me?

        1 reply 0 retweets 1 like
      4. Ryan Sleevi‏ @sleevi_ 24 Mar 2015
        Replying to @bascule

        @bascule link to source? Several ways to botch :/

        1 reply 0 retweets 0 likes
      5. Tony Arcieri‏ @bascule 24 Mar 2015
        Replying to @sleevi_

        @sleevi_ oh god, my eyes: https://github.com/ruby/openssl/blob/master/lib/openssl/ssl.rb#L136 …

        2 replies 0 retweets 1 like
      6. Ryan Sleevi‏ @sleevi_ 24 Mar 2015
        Replying to @bascule

        @bascule yup. Can think of two or three ways you could pop Ruby but not a browser...

        2 replies 0 retweets 0 likes
      7. Tony Arcieri‏ @bascule 24 Mar 2015
        Replying to @sleevi_

        @sleevi_ so far: not verifying the chain, not verifying the hostname, and “custom” unmanaged truststores…

        1 reply 0 retweets 0 likes
      8. Tony Arcieri‏ @bascule 24 Mar 2015
        Replying to @bascule

        @sleevi_ I am guessing there are many Ruby client libs that are vulnerable to at least one of those

        0 replies 0 retweets 0 likes
      9. End of conversation
      1. New conversation
      2. Adam Prescott‏ @typed 24 Mar 2015
        Replying to @bascule

        @bascule wow what a bad API

        1 reply 0 retweets 0 likes
      3. Tony Arcieri‏ @bascule 24 Mar 2015
        Replying to @typed

        @typed not just bad, totally undocumented o_O

        0 replies 0 retweets 0 likes
      4. End of conversation
      1. New conversation
      2. In case you missed it‏ @ACKFlags 24 Mar 2015
        Replying to @bascule

        @bascule btw, you going to transact?

        1 reply 0 retweets 0 likes
      3. Tony Arcieri‏ @bascule 24 Mar 2015
        Replying to @ACKFlags

        @asshurtACKFlags umm, gonna go with no

        1 reply 0 retweets 0 likes
      4. In case you missed it‏ @ACKFlags 24 Mar 2015
        Replying to @bascule

        @bascule it's gonna be so cash dude, see ya there!

        0 replies 0 retweets 0 likes
      5. End of conversation

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