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berendjanwever's profile
𝓢𝓀𝓎𝓛𝒾𝓃𝑒𝒹
𝓢𝓀𝓎𝓛𝒾𝓃𝑒𝒹
𝓢𝓀𝓎𝓛𝒾𝓃𝑒𝒹
@berendjanwever

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𝓢𝓀𝓎𝓛𝒾𝓃𝑒𝒹

@berendjanwever

ASCII art evangelist | motivational coder | full stack IoT blockchain machine learning cyber-cloud threat actor | berendj@nwever.nl | http://skylined.nl/gpg 

 🇳🇱 The Netherlands
blog.skylined.nl
Joined June 2009

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    1. halvarflake‏ @halvarflake 26 Apr 2016

      A stupid idea, unfortunately. Only academia still cares about ROP. http://undeadly.org/cgi?action=article&sid=20160425145953 … - sorry theo.

      5 replies 8 retweets 16 likes
    2. twiz‏ @lazytyped 26 Apr 2016
      Replying to @halvarflake

      @halvarflake also this defense is basically pointless for ROP in the current form

      1 reply 0 retweets 1 like
    3. twiz‏ @lazytyped 26 Apr 2016
      Replying to @lazytyped

      @halvarflake randomization is not the way today. Stop the attack at the origin (prevent the first non authorized return)

      1 reply 2 retweets 2 likes
    4. 𝓢𝓀𝓎𝓛𝒾𝓃𝑒𝒹‏ @berendjanwever 26 Apr 2016
      Replying to @lazytyped

      @lazytyped @halvarflake ...and in an ideal world, you have no bugs. But in reality, anything that can mitigate exploitation is useful, not?

      1 reply 0 retweets 3 likes
    5. twiz‏ @lazytyped 26 Apr 2016
      Replying to @berendjanwever

      @berendjanwever @halvarflake no, that's what leads to pulling up pointless defenses that make more harm (usability, debugging) than good

      3 replies 0 retweets 0 likes
    6. 𝓢𝓀𝓎𝓛𝒾𝓃𝑒𝒹‏ @berendjanwever 26 Apr 2016
      Replying to @lazytyped

      @lazytyped @halvarflake I did say "anything that can mitigate exploitation", not "anything". Cost/benefit analysis is implied.

      1 reply 0 retweets 0 likes
    7. twiz‏ @lazytyped 26 Apr 2016
      Replying to @berendjanwever

      @berendjanwever @halvarflake how does this "randomize libc symbols" mitigates exploitation?

      1 reply 0 retweets 0 likes
    8. 𝓢𝓀𝓎𝓛𝒾𝓃𝑒𝒹‏ @berendjanwever 26 Apr 2016
      Replying to @lazytyped

      @lazytyped @halvarflake I did not say this is good mitigation. I said that even if some mitigations are better than others, all are useful.

      2 replies 0 retweets 0 likes
    9. 𝓢𝓀𝓎𝓛𝒾𝓃𝑒𝒹‏ @berendjanwever 26 Apr 2016
      Replying to @berendjanwever

      @lazytyped @halvarflake In other words, just because this uses randomization does not make it bad by default.

      1 reply 0 retweets 0 likes
    10. twiz‏ @lazytyped 26 Apr 2016
      Replying to @berendjanwever

      @berendjanwever @halvarflake with ROP we already have enough randomization with ASLR. And direction is CFI-ish.More randomization won't help

      1 reply 1 retweet 0 likes
      𝓢𝓀𝓎𝓛𝒾𝓃𝑒𝒹‏ @berendjanwever 26 Apr 2016
      Replying to @lazytyped

      @lazytyped @halvarflake I'd like to see somebody (theo?) show a bunch of vulns this would have mitigated before I make a judgement.

      5:01 AM - 26 Apr 2016
      • 1 Retweet
      • 3 Likes
      • Mitja Kolsek Alexander Klink
      1 reply 1 retweet 3 likes
        1. New conversation
        2. twiz‏ @lazytyped 26 Apr 2016
          Replying to @berendjanwever

          @berendjanwever @halvarflake sure you don't have to trust me. I'm happy to be proven wrong (but not by an artificial case)

          1 reply 0 retweets 2 likes
        3. twiz‏ @lazytyped 26 Apr 2016
          Replying to @lazytyped

          @berendjanwever @halvarflake oh and for the record, this is less resistant than ASLR (any infoleak can be used against any process)

          0 replies 0 retweets 4 likes
        4. End of conversation

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