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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. Robᵉʳᵗ Graham 😷‏ @ErrataRob 17 Jul 2017
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      Replying to @ErrataRob

      4/ The lesson is that by not doing a "full disclosure with PoC", Microsoft delayed exploitation by only a few hours.

      6 replies 23 retweets 44 likes
    2. Robᵉʳᵗ Graham 😷‏ @ErrataRob 17 Jul 2017
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      Replying to @ErrataRob

      5/ I point this out because those ignorant of 30 years of lessons in "disclosure" keep claiming that we should hide the details of patches.

      3 replies 41 retweets 84 likes
    3. Hassan Sultan‏ @hsultan75 18 Jul 2017
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      Replying to @ErrataRob

      It might also be that some with 15 years of vuln response see it as valuable to give time to patch, and still provide info to defenders

      2 replies 0 retweets 0 likes
    4. Hassan Sultan‏ @hsultan75 18 Jul 2017
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      Replying to @hsultan75 @ErrataRob

      there's a spectrum between "disclose nothing to no one" and "disclose everything to everyone". The truth is not specifically at any extreme

      2 replies 0 retweets 1 like
    5. Tavis Ormandy‏Verified account @taviso 18 Jul 2017
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      Replying to @hsultan75 @ErrataRob

      The point of the story is that there *isn't* a spectrum, it's effectively binary.

      1 reply 0 retweets 3 likes
    6. Hassan Sultan‏ @hsultan75 18 Jul 2017
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      Replying to @taviso @ErrataRob

      It's not. MS has created its approach, which is a middle-ground, for a reason. It proved useful to stave off attacks while patches deploy.

      2 replies 0 retweets 0 likes
    7. Hassan Sultan‏ @hsultan75 18 Jul 2017
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      Replying to @hsultan75 @taviso @ErrataRob

      MS doesn't publicly post info, but has channels to inform defenders. Result is that upon release, most big AV/detection engines are ready

      1 reply 0 retweets 0 likes
    8. Hassan Sultan‏ @hsultan75 18 Jul 2017
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      Replying to @hsultan75 @taviso @ErrataRob

      may be a bit unfair to some defenders that don't have the relationship ? Likely. But in the end it protects the vast majority of users.

      2 replies 0 retweets 0 likes
    9. Tavis Ormandy‏Verified account @taviso 18 Jul 2017
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      Replying to @hsultan75 @ErrataRob

      Yes, the point of the story is that MS is wrong. You can turn a patch with zero information into an exploit easily.

      3 replies 5 retweets 4 likes
    10. Mitja Kolsek‏ @mkolsek 18 Jul 2017
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      Replying to @taviso @hsultan75 @ErrataRob

      I want to talk to you about that "easily" part ;) I generally find it considerably non-easy to back-track from patch to input point.

      1 reply 0 retweets 0 likes
      Tavis Ormandy‏Verified account @taviso 18 Jul 2017
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      Replying to @mkolsek @hsultan75 @ErrataRob

      It's a practiced skill, just like programming. The fact that you can find someone who can't program doesn't mean "hello world" is non-easy.

      4:13 PM - 18 Jul 2017
      • 1 Like
      • luizrmgarcia
      1 reply 0 retweets 1 like
        1. Mitja Kolsek‏ @mkolsek 18 Jul 2017
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          Replying to @taviso @hsultan75 @ErrataRob

          Looking forward to learning any tricks and tools I don't yet know that would make my writing patch-reversing "hello world" easier ;)

          0 replies 0 retweets 2 likes
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