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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Hector Martin‏ @marcan42 17 Oct 2017
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      So, yeah. The wpa_supplicant bug only lets you *impersonate* an AP. It does *NOT* let you MITM it or passively decrypt. This is important.

      4 replies 25 retweets 48 likes
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    2. Hector Martin‏ @marcan42 17 Oct 2017
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      If you're on a corporate network, an attacker *cannot* transparently MITM you. They can decrypt sent packets but they're *dropped*.

      2 replies 4 retweets 15 likes
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    3. Ridley @ a safe distance‏ @11rcombs 17 Oct 2017
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      Replying to @marcan42

      Picture: using corporate network, using web browser with usual configuration, on average sites

      1 reply 0 retweets 0 likes
    4. Ridley @ a safe distance‏ @11rcombs 17 Oct 2017
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      Replying to @11rcombs @marcan42

      most sites don't use HSTS, so you can SSLStrip and MITM internet access easily

      1 reply 0 retweets 0 likes
    5. Ridley @ a safe distance‏ @11rcombs 17 Oct 2017
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      Replying to @11rcombs @marcan42

      this implies the user is "trusting WAN", yes, but most people don't even know what that means

      1 reply 0 retweets 0 likes
    6. Ridley @ a safe distance‏ @11rcombs 17 Oct 2017
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      Replying to @11rcombs @marcan42

      usually the expectation is that local WPA2 will protect against attacks on a local network, because attacking the uplink is harder

      2 replies 0 retweets 0 likes
    7. Hector Martin‏ @marcan42 17 Oct 2017
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      Replying to @11rcombs

      Sure, but most people use random public WiFi anyway, or would be tricked by a same/similar SSID with no security.

      1 reply 0 retweets 0 likes
    8. Ridley @ a safe distance‏ @11rcombs 17 Oct 2017
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      Replying to @marcan42

      yeah, which means it comes down to "this is only a problem because so much shit is already fucked"

      1 reply 0 retweets 1 like
    9. Ridley @ a safe distance‏ @11rcombs 17 Oct 2017
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      Replying to @11rcombs @marcan42

      also, contrast with the bugs in other implementations, which AIUI _do_ allow transparent decryption

      1 reply 0 retweets 0 likes
      Hector Martin‏ @marcan42 17 Oct 2017
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      Replying to @11rcombs

      (in one direction only, and nontrivially, but yes)

      3:10 PM - 17 Oct 2017
      1 reply 0 retweets 0 likes
        1. Ridley @ a safe distance‏ @11rcombs 17 Oct 2017
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          Replying to @marcan42

          my take, in general, is "this breaks a lot of the security guarantees of WPA2, but _you should never be relying on those anyway_"

          0 replies 0 retweets 1 like
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