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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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      Robᵉʳᵗ Graham 😷 Retweeted Today In Infosec

      1/ [History] Last Stage of Delirium created a PoC but did not release it to the public, because they saw it was a HUGE vuln.https://twitter.com/todayininfosec/status/886798439912136704 …

      Robᵉʳᵗ Graham 😷 added,

      Today In Infosec @todayininfosec
      2003: Last Stage of Delirium created a proof of concept exploit for the vulnerability which the Blaster worm exploited 4 weeks later. pic.twitter.com/ROhAuPO0nF
      2 replies 41 retweets 80 likes
    2. Robᵉʳᵗ Graham 😷‏ @ErrataRob 17 Jul 2017
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      Replying to @ErrataRob

      2/ However, it didn't matter. At ISS, we had created our own working PoC within hours after Microsoft's announcement.

      1 reply 12 retweets 29 likes
    3. Robᵉʳᵗ Graham 😷‏ @ErrataRob 17 Jul 2017
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      Replying to @ErrataRob

      3/ ISS X-Force found the bug within an hour by diffing the patch and finding a stack buffer that went from 16 chars to 256 chars.

      3 replies 14 retweets 38 likes
    4. 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
    5. 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
    6. Paul Pols‏ @paulpols 17 Jul 2017
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      Replying to @ErrataRob

      There's a big difference between providing details for a patch, including a simple PoC and a releasing a "weaponized" exploit

      1 reply 1 retweet 0 likes
      Tavis Ormandy‏Verified account @taviso 18 Jul 2017
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      Replying to @paulpols @ErrataRob

      The point of the story is that there isn't a big difference, and withholding it hurts defenders for negligible benefit.

      11:46 AM - 18 Jul 2017
      • 3 Retweets
      • 21 Likes
      • Professor Poppycock Z0vsky Andrew Fasano Se7enNationArmy Nicholas Eckert ☕ DBIR-ista ☕ Ben Vanik Siguza Will Strafach
      4 replies 3 retweets 21 likes
        1. New conversation
        2. Paul Pols‏ @paulpols 19 Jul 2017
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          Replying to @taviso @ErrataRob

          As a pentester, I like exploits as much as the next guy. But truthfully, how is it helping customers defend better than just patch details?

          1 reply 0 retweets 0 likes
        3. Zate‏ @zate 19 Jul 2017
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          Replying to @paulpols @taviso @ErrataRob

          The window between POC/patch and Exploit vs POC/patch and plugin to scan for it are wildly diff. I'd rather not wait to determine exposure.

          1 reply 0 retweets 0 likes
        4. 1 more reply
        1. Paul Pols‏ @paulpols 19 Jul 2017
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          Replying to @taviso @ErrataRob

          I'm a rule utilitarian, so I'm open to arguments why publicizing point-and-shoot type exploits help organizations (more than they hurt them)

          0 replies 0 retweets 0 likes
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        1. Paul Pols‏ @paulpols 19 Jul 2017
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          Replying to @taviso @daveaitel @ErrataRob

          If you look at MS17-010, nobody reversed the patch to create a public exploit. Bad stuff started happening only after TSB released exploits.

          0 replies 0 retweets 0 likes
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        1. Paul Pols‏ @paulpols 19 Jul 2017
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          Replying to @taviso @ErrataRob

          Are you saying Microsoft should have published Eternalblue with their advisory (if they had it). Withholding the exploit hurt defenders?

          0 replies 0 retweets 0 likes
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