Skip to content
By using Twitter’s services you agree to our Cookies Use. We and our partners operate globally and use cookies, including for analytics, personalisation, and ads.
  • Home Home Home, current page.
  • About

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @
  • Language: English
    • Bahasa Indonesia
    • Bahasa Melayu
    • Català
    • Čeština
    • Dansk
    • Deutsch
    • English UK
    • Español
    • Filipino
    • Français
    • Hrvatski
    • Italiano
    • Magyar
    • Nederlands
    • Norsk
    • Polski
    • Português
    • Română
    • Slovenčina
    • Suomi
    • Svenska
    • Tiếng Việt
    • Türkçe
    • Ελληνικά
    • Български език
    • Русский
    • Српски
    • Українська мова
    • עִבְרִית
    • العربية
    • فارسی
    • मराठी
    • हिन्दी
    • বাংলা
    • ગુજરાતી
    • தமிழ்
    • ಕನ್ನಡ
    • ภาษาไทย
    • 한국어
    • 日本語
    • 简体中文
    • 繁體中文
  • Have an account? Log in
    Have an account?
    · Forgot password?
    New to Twitter?
    Sign up
dguido's profile
Dan Guido
Dan Guido
Dan Guido
@dguido

Tweets

Dan Guido

@dguido

CEO @trailofbits, organizer @EmpireHacking, director @hack_secure. Open DMs.

Brooklyn, NY
trailofbits.com
Joined April 2008

Tweets

  • © 2020 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • Imprint
  • Cookies
  • Ads info
Dismiss
Previous
Next

Go to a person's profile

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @

Promote this Tweet

Block

  • Tweet with a location

    You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more

    Your lists

    Create a new list

    Under 100 characters, optional
    Privacy

    Copy link to Tweet

    Embed this Tweet

    Embed this Video

    Add this Tweet to your website by copying the code below. Learn more

    Add this video to your website by copying the code below. Learn more

    Hmm, there was a problem reaching the server.

    By embedding Twitter content in your website or app, you are agreeing to the Twitter Developer Agreement and Developer Policy.

    Preview

    Why you're seeing this ad

    Log in to Twitter

    · Forgot password?
    Don't have an account? Sign up »

    Sign up for Twitter

    Not on Twitter? Sign up, tune into the things you care about, and get updates as they happen.

    Sign up
    Have an account? Log in »

    Two-way (sending and receiving) short codes:

    Country Code For customers of
    United States 40404 (any)
    Canada 21212 (any)
    United Kingdom 86444 Vodafone, Orange, 3, O2
    Brazil 40404 Nextel, TIM
    Haiti 40404 Digicel, Voila
    Ireland 51210 Vodafone, O2
    India 53000 Bharti Airtel, Videocon, Reliance
    Indonesia 89887 AXIS, 3, Telkomsel, Indosat, XL Axiata
    Italy 4880804 Wind
    3424486444 Vodafone
    » See SMS short codes for other countries

    Confirmation

     

    Welcome home!

    This timeline is where you’ll spend most of your time, getting instant updates about what matters to you.

    Tweets not working for you?

    Hover over the profile pic and click the Following button to unfollow any account.

    Say a lot with a little

    When you see a Tweet you love, tap the heart — it lets the person who wrote it know you shared the love.

    Spread the word

    The fastest way to share someone else’s Tweet with your followers is with a Retweet. Tap the icon to send it instantly.

    Join the conversation

    Add your thoughts about any Tweet with a Reply. Find a topic you’re passionate about, and jump right in.

    Learn the latest

    Get instant insight into what people are talking about now.

    Get more of what you love

    Follow more accounts to get instant updates about topics you care about.

    Find what's happening

    See the latest conversations about any topic instantly.

    Never miss a Moment

    Catch up instantly on the best stories happening as they unfold.

    1. Nico Waisman‏ @nicowaisman 12 Aug 2019
      • Report Tweet
      • Report NetzDG Violation

      On Friday I spent the afternoon looking at @trailofbits excellent work on Kubernetes (https://github.com/trailofbits/audit-kubernetes/tree/master/reports …). As you know, I have been chasing interesting bug classes as part of my daily job, and I found one in the report which I decide to QL (1/n)

      1 reply 14 retweets 37 likes
      Show this thread
    2. Nico Waisman‏ @nicowaisman 12 Aug 2019
      • Report Tweet
      • Report NetzDG Violation

      The vulnerability #13 "Overflows when using strconv.Atoi and downcasting the result" basically consist of the method Atoi which returns an int (64 bits on 64b environment)

      1 reply 0 retweets 2 likes
      Show this thread
    3. Nico Waisman‏ @nicowaisman 12 Aug 2019
      • Report Tweet
      • Report NetzDG Violation

      Here is one example. In this case, they are actually casting to 32bits to define a port number. Is not really that harmful, but it give you an idea of the problems it could arise.pic.twitter.com/fYCrfsPgGk

      1 reply 0 retweets 2 likes
      Show this thread
    4. Nico Waisman‏ @nicowaisman 12 Aug 2019
      • Report Tweet
      • Report NetzDG Violation

      On the Appendix B, you can find a list of 14 places where they found this behaviour. I thought it was a great case for Variant Analysis! Let see if we can find a bit more cases

      2 replies 0 retweets 2 likes
      Show this thread
    5. Nico Waisman‏ @nicowaisman 12 Aug 2019
      • Report Tweet
      • Report NetzDG Violation

      I wrote a simple QL query that do Local TainTracking and try to track if the result of Atoi ends up on a wrapper of 32 bits or less! (run it on kubernetes and all their staging proyects)pic.twitter.com/DMgGd2iPEX

      1 reply 3 retweets 9 likes
      Show this thread
    6. daveaitel‏ @daveaitel 12 Aug 2019
      • Report Tweet
      • Report NetzDG Violation
      Replying to @nicowaisman @trailofbits

      Did you find some that they missed?

      1 reply 0 retweets 0 likes
    7. Nico Waisman‏ @nicowaisman 12 Aug 2019
      • Report Tweet
      • Report NetzDG Violation
      Replying to @daveaitel @trailofbits

      Yep. They were 10 more from the report. https://github.com/kubernetes/kubernetes/issues/81121#issuecomment-520544280 … But I went through all the staging projects.

      1 reply 0 retweets 0 likes
    8. Dan Guido‏ @dguido 12 Aug 2019
      • Report Tweet
      • Report NetzDG Violation
      Replying to @nicowaisman @daveaitel @trailofbits

      Dan Guido Retweeted Bobby T

      "missed" is the wrong way to frame it, since we didn't suggest we were comprehensive. It was a demonstration that further research should get conducted.https://twitter.com/b0bbytabl3s/status/1160998111763767300 …

      Dan Guido added,

      Bobby T @b0bbytabl3s
      Replying to @lojikil @cji
      Yeah, this is a fantastic example of what I wanted to see the report used as - a stepping stone to do more awesome analysis. I dig it. 🤙
      1 reply 0 retweets 1 like
      Dan Guido‏ @dguido 12 Aug 2019
      • Report Tweet
      • Report NetzDG Violation
      Replying to @dguido @nicowaisman and

      Dan Guido Retweeted Trail of Bits

      Our goals for the review were to build a foundation for further research and broadly survey as much attack surface as possible: https://twitter.com/trailofbits/status/1158895151886032897 …. Nico's work is exactly what we hoped would come from it.

      Dan Guido added,

      Trail of Bits @trailofbits
      Replying to @bascule @KirinDave
      Yes, and we were directed to go for breadth (see discussion in the coverage section). We hope our work provides the foundation for rooting out many high-risk bugs in the future! https://twitter.com/Atlas_Hugged/status/1158774619324633089 … pic.twitter.com/t8uEtPGdFX
      2:18 PM - 12 Aug 2019
      • 1 Retweet
      • 5 Likes
      • black traffic Sam Lanning - BLACK LIVES MATTER!!! Xavier René-Corail Ken Olofsen Nico Waisman
      0 replies 1 retweet 5 likes

      Loading seems to be taking a while.

      Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

        Promoted Tweet

        false

        • © 2020 Twitter
        • About
        • Help Center
        • Terms
        • Privacy policy
        • Imprint
        • Cookies
        • Ads info