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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. API ERROR‏ @SwiftOnSecurity 3 Dec 2019
      • Report Tweet
      • Report NetzDG Violation

      Me: Threat-hunting rare DNS lookups in a corporate network. Confluence: https://www.google.com/search?&q=%22atlassian-domain-for-localhost-connections-only.com%22 …pic.twitter.com/pse4VwORiZ

      35 replies 343 retweets 1,622 likes
      Show this thread
    2. Tavis Ormandy‏Verified account @taviso 3 Dec 2019
      • Report Tweet
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      Replying to @SwiftOnSecurity

      Did you know you just dropped a 0day on twitter? 😂

      10 replies 216 retweets 1,520 likes
    3. API ERROR‏ @SwiftOnSecurity 3 Dec 2019
      • Report Tweet
      • Report NetzDG Violation
      Replying to @taviso

      Wait... are you serious? They... actually embed the private cert somewhere? I was just laughing at the domain name.

      9 replies 33 retweets 601 likes
    4. D̒͂̕ᵈăᵃn̕ᶰ Ť̾̾̓͐͒͠ᵗe͗̑́̋̂́͡ᵉn̅ᶰtᵗl̀̓͘ᶫe̓̒̂̚ᵉrʳ‏Verified account @Viss 4 Dec 2019
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      Replying to @SwiftOnSecurity @taviso

      i saw this scroll by the other day and chuckled. then thinking about it, i'm not sure how this would reveal the private cert? is it just sat on the companion app somewhere and is trivially accessible?

      2 replies 1 retweet 37 likes
    5. Tavis Ormandy‏Verified account @taviso 4 Dec 2019
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      Replying to @Viss @SwiftOnSecurity

      Yep, there's no way to make what's described in that screenshot work without embedding the private key in the application, so I just downloaded the installer and strings | grep 'BEGIN RSA PRIVATE KEY' 🤷🏻‍♂️

      8 replies 25 retweets 207 likes
    6. API ERROR‏ @SwiftOnSecurity 5 Dec 2019
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      Replying to @taviso @Viss

      See if I was smart I would have done this first instead of having blind faith they had a good architecture

      2 replies 2 retweets 51 likes
    7. Chris Dupres  🇨🇦‏ @blaktron 5 Dec 2019
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      Replying to @SwiftOnSecurity @taviso @Viss

      @taviso isnt quite true about being no way to do this without a static key, they could be generating a self signed cert for each session then explicitly trusting it. Theres a lot of overhead to that, but its doable.

      1 reply 0 retweets 1 like
    8. Tavis Ormandy‏Verified account @taviso 5 Dec 2019
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      Replying to @blaktron @SwiftOnSecurity @Viss

      As Raymond Chen says to nitpickers, "it's true enough".

      1 reply 0 retweets 1 like
    9. Chris Dupres  🇨🇦‏ @blaktron 5 Dec 2019
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      Replying to @taviso @SwiftOnSecurity @Viss

      It is, but there are products that do this "properly" with self signed, installed certs and you saying "theres no way to do it" might panic people about them.

      1 reply 0 retweets 0 likes
    10. Chris Dupres  🇨🇦‏ @blaktron 5 Dec 2019
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      Replying to @blaktron @taviso and

      You have a TON of influence for blanket statements, imo, unless they are ironclad truth.

      1 reply 0 retweets 1 like
      Tavis Ormandy‏Verified account @taviso 5 Dec 2019
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      Replying to @blaktron @SwiftOnSecurity @Viss

      Don't make me block you for nitpicking.

      2:41 PM - 5 Dec 2019
      • 1 Like
      • D̒͂̕ᵈăᵃn̕ᶰ Ť̾̾̓͐͒͠ᵗe͗̑́̋̂́͡ᵉn̅ᶰtᵗl̀̓͘ᶫe̓̒̂̚ᵉrʳ
      1 reply 0 retweets 1 like
        1. New conversation
        2. Chris Dupres  🇨🇦‏ @blaktron 5 Dec 2019
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          Replying to @taviso @SwiftOnSecurity @Viss

          Lol what a threat. Have a great day.

          1 reply 0 retweets 0 likes
        3. D̒͂̕ᵈăᵃn̕ᶰ Ť̾̾̓͐͒͠ᵗe͗̑́̋̂́͡ᵉn̅ᶰtᵗl̀̓͘ᶫe̓̒̂̚ᵉrʳ‏Verified account @Viss 5 Dec 2019
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          Replying to @blaktron @taviso @SwiftOnSecurity

          when you get 20 people doing this to you a day, your patience for it wears thin really fast. i dont even warn people. i just mute or block instantly these days.

          1 reply 0 retweets 3 likes
        4. 10 more replies

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