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taviso's profile
Tavis Ormandy
Tavis Ormandy
Tavis Ormandy
Verified account
@taviso

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Tavis OrmandyVerified account

@taviso

Vulnerability researcher at Google. This is a personal stream, opinions expressed are mine.

California
taviso.decsystem.org
Joined April 2008

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    1. Matt Austin‏ @mattaustin 30 Nov 2019
      • Report Tweet
      • Report NetzDG Violation

      I wanted to fully test this “Responsible Disclosure” theory so I submitted a one click RCE in Microsoft Teams to #msrc on Sep 01, 2018. It is still open. The disclosure policy of @taviso and others gets bugs fixed. This does not.

      9 replies 67 retweets 220 likes
      Show this thread
    2. Brook Schoenfield‏ @BrkSchoenfield 2 Dec 2019
      • Report Tweet
      • Report NetzDG Violation
      Replying to @mattaustin @taviso

      IMHE, PSIRT MUST always respond and stay engaged. But, arbitrary fix periods fail to take into account the vast range of fix complexities from 1 line of code to a complete redesign. Therein lies the challenge: all fixes are not equal and cannot be treated as such

      1 reply 0 retweets 3 likes
    3. Tavis Ormandy‏Verified account @taviso 2 Dec 2019
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      Replying to @BrkSchoenfield @mattaustin

      Two things, that's a convenient excuse ("You just don't understand how complex it is", and then the patch is trivial and obvious). Secondly, you can fix your software whenever you like, that should not delay warning the user base about the danger they're exposed to.

      4 replies 1 retweet 11 likes
    4. Tavis Ormandy‏Verified account @taviso 2 Dec 2019
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      Replying to @taviso @BrkSchoenfield @mattaustin

      Here's an excellent example, Microsoft literally told customers this bug was too complex to fix in 3 months, but ended up being the trivial oneline check we assumed it would be. https://bugs.chromium.org/p/project-zero/issues/detail?id=1804 …

      1 reply 1 retweet 12 likes
      Tavis Ormandy‏Verified account @taviso 2 Dec 2019
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      Replying to @taviso @BrkSchoenfield @mattaustin

      You can't tell me the complexity was testing either, because the tests are opensource and they literally just call it with rand() 1000 times. 😂

      11:02 AM - 2 Dec 2019
      • 7 Likes
      • Tim D Williams 🕷 TechByTom Rich Felker KPH 🇨🇦 Timothy Jacobs tem um peladao ai hikikomorphism🏳️‍🌈🏝🛰️
      3 replies 0 retweets 7 likes
        1. New conversation
        2. Brook Schoenfield‏ @BrkSchoenfield 2 Dec 2019
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          Replying to @taviso @mattaustin

          Sometimes mistakes are made. When I had to deal with PSIRT, I was always interested in solutions from reporters. But then, I can cite many examples where the fix appeared trivial and was not - at least, to do it correctly.

          1 reply 0 retweets 0 likes
        3. Tavis Ormandy‏Verified account @taviso 2 Dec 2019
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          Replying to @BrkSchoenfield @mattaustin

          You don't see the problem with "just give PSIRT as much time as they like", while the users sit there vulnerable?

          6 replies 0 retweets 1 like
        4. 7 more replies
        1. New conversation
        2. Brook Schoenfield‏ @BrkSchoenfield 2 Dec 2019
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          Replying to @taviso @mattaustin

          A single example of a botched fix proves nothing. Sit on the other side contending with a report that is a symptom of a bigger design issue which will take 18 months to truly fix. That 90 day clock ends with a zero day about which user can do nothing. Not pretty

          1 reply 0 retweets 2 likes
        3. Tavis Ormandy‏Verified account @taviso 2 Dec 2019
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          Replying to @BrkSchoenfield @mattaustin

          It proves plenty, it proves that vendors are willing to pull out any excuse to not fix vulnerabilities in a timely manner. I've been on both sides of the disclosure process, and see good reason to not just give vendors whatever they ask for.

          2 replies 0 retweets 7 likes
        4. 8 more replies
        1. New conversation
        2. Brook Schoenfield‏ @BrkSchoenfield 2 Dec 2019
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          Replying to @taviso @mattaustin

          How many “users” have you talked with? You know, those millions who believe that their AV “just takes care of it”. Your grandmother. Your cousin’s friend.

          1 reply 0 retweets 0 likes
        3. Tavis Ormandy‏Verified account @taviso 2 Dec 2019
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          Replying to @BrkSchoenfield @mattaustin

          That is a really bizarre non-sequitur.

          1 reply 0 retweets 0 likes
        4. 1 more reply

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