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wdormann's profile
Will Dormann
Will Dormann
Will Dormann
@wdormann

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Will Dormann

@wdormann

Vulnerability Analyst at the CERT/CC. My thoughts are my own, not my employer's.

Joined August 2012

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    1. SwiftOnSecurity‏ @SwiftOnSecurity 5 Dec 2019
      • Report Tweet
      • Report NetzDG Violation

      Although “0day” is most commonly used in the context of severe security issues exploited in the wild, its only real meaning is that a flaw was revealed publicly without a patch being available. Although the Confluence thing I tweeted is one, in context it’s not a systemic threat

      9 replies 39 retweets 427 likes
      Show this thread
    2. Will Dormann‏ @wdormann 5 Dec 2019
      • Report Tweet
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      Replying to @SwiftOnSecurity

      Indeed, the term "0day" conjures something important enough for the media to salivate over. But as you mentioned, it's just a relation between knowledge of an issue and the fix availability. In your case, you simply pointed to public vendor documentation. So maybe not even 0day?

      1 reply 0 retweets 7 likes
    3. SwiftOnSecurity‏ @SwiftOnSecurity 5 Dec 2019
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      Replying to @wdormann

      I think the fact the private key was extracted (which I didn’t do) slightly qualifies but yes it’s pretty marginal.

      1 reply 0 retweets 12 likes
    4. Will Dormann‏ @wdormann 5 Dec 2019
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      Replying to @SwiftOnSecurity

      Will Dormann Retweeted Will Dormann

      The private key was sitting in plain sight. Any time an HTTPS connection referred to by DNS name connects to localhost (as described in the Atlassian documentation), one should probably assume shenanigans.https://twitter.com/wdormann/status/1202267460235337728 …

      Will Dormann added,

      Will Dormann @wdormann
      Replying to @wdormann @taviso and 2 others
      Also note that this private key isn't too terribly tricky to find. A simple grep in the installed software directory would suffice. pic.twitter.com/iTqtU6EYgb
      1 reply 0 retweets 3 likes
    5. SwiftOnSecurity‏ @SwiftOnSecurity 5 Dec 2019
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      Replying to @wdormann

      To be fair there is software that generates a unique key on the device so it’s a good bet but not always

      2 replies 0 retweets 7 likes
      Will Dormann‏ @wdormann 5 Dec 2019
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      Replying to @SwiftOnSecurity

      Sure. But that requires that the CA that generates the certificate *also* uses a unique-per-installation CA private key, *and* that the CA is installed into the trusted root CA list in the OS where the software is installed. Not impossible, but expect mistakes (e.g. Superfish).

      7:10 AM - 5 Dec 2019
      • 1 Like
      • Mitja Kolsek
      1 reply 0 retweets 1 like
        1. New conversation
        2. Ryan Castellucci  🏠‏ @ryancdotorg 5 Dec 2019
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          Replying to @wdormann @SwiftOnSecurity

          https://github.com/koush/UniversalAdbDriver/blob/master/UniversalAdbDriverInstaller/Program.cs#L25 … https://github.com/koush/UniversalAdbDriver/blob/master/UniversalAdbDriverInstaller/Program.cs#L198 …

          1 reply 0 retweets 0 likes
        3. Ryan Castellucci  🏠‏ @ryancdotorg 5 Dec 2019
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          Replying to @ryancdotorg @wdormann @SwiftOnSecurity

          Hmm, there were two links when I tweeted that. The Universal ADB Driver installer generates a CA, adds it to the system with driver signing permissions, signs the driver, deletes the private key. Not sure how solid the implementation is. https://github.com/koush/UniversalAdbDriver/blob/master/UniversalAdbDriverInstaller/Program.cs#L198 …

          1 reply 0 retweets 1 like
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