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pcwalton's profile
Patrick Walton
Patrick Walton
Patrick Walton
@pcwalton

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Patrick Walton

@pcwalton

Research engineer at Mozilla

San Francisco, CA
pcwalton.github.io
Joined November 2009

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    1. John Regehr‏ @johnregehr 5 Aug 2019
      • Report Tweet
      • Report NetzDG Violation

      John Regehr Retweeted Kostya Serebryany

      one of the most interesting things about this work is that it might be the gateway drug that finally leads to widespread deployment of real memory safety for C and C++https://twitter.com/kayseesee/status/1157803186444525575 …

      John Regehr added,

      Kostya Serebryany @kayseesee
      Adopting the Arm Memory Tagging Extension in Android https://security.googleblog.com/2019/08/adopting-arm-memory-tagging-extension.html …
      4 replies 19 retweets 98 likes
      Show this thread
    2. Patrick Walton‏ @pcwalton 5 Aug 2019
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      Replying to @johnregehr

      I have a more pessimistic outlook: these kinds of mitigations will just prolong C and C++ lifespan, while being quickly defeated by exploit authors, worsening security overall

      3 replies 1 retweet 17 likes
    3. DanielMicay‏ @DanielMicay 5 Aug 2019
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      Replying to @pcwalton @johnregehr

      In my opinion, features like this work far better with memory safe languages where memory corruption bugs are very scarce. The attacker doesn't have the opportunity to choose from a huge selection of bugs / helpful memory corruption primitives to build a reliable way around it.

      2 replies 0 retweets 5 likes
      Patrick Walton‏ @pcwalton 5 Aug 2019
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      Replying to @DanielMicay @johnregehr

      Agreed.

      1:29 PM - 5 Aug 2019
      1 reply 0 retweets 0 likes
        1. your least favorite construct‏ @XMPPwocky 5 Aug 2019
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          Replying to @pcwalton @DanielMicay @johnregehr

          also makes exploitation of stuff like standalone file format loaders MUCH harder- in situations where you don't have some scripting language to glue your different bugs together. (in the distance, you hear langsec screaming that all file formats are scripting languages, but)

          0 replies 0 retweets 2 likes
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