5 ms·

I mean, that's how I MITM SSL traffic on a daily basis to do development. None of that speaks to HSTS/Pinning... which is the feature meant to protect against

I mean, that's how I MITM SSL traffic on a daily basis to do development. None of that speaks to HSTS/Pinning... which is the feature meant to protect against this sort of thing. I'm specifically asking about how a company can bypass HSTS/Pinning without modifying my local browser. Everything I'm reading indicates that's not possible.

nostromo 10y ago
https://developer.mozilla.org/en-US/docs/Web/Security/Public_Key_Pinning https://developer.mozilla.org/en-US/docs/Web/Security/Public... >Firefox (and Chrome) disable Pin Validation for Pinned Hosts whose validated certificate chain terminates at a user-defined trust anchor (rather than a built-in trust anchor). This means that for users who imported custom root certificates all pinning violations are ignored. That last sentence is key. From Wikipedia: some browsers "disable pinning for certificate chains with private root certificates to enable various corporate content inspection scanners and web debugging tools. The RFC 7469 standard also recommends disabling pinning violation reports for such certificate chains."
- colemickens 10y ago
  Perfect! This is the missing link! Thank you for helping me understand.
- cplease 10y ago
  What does that have to do with wifi certificates?
  - detaro 10y ago
    If you add CA certificates for the Wifi they probably (I'm not sure if you can tell it manually to not do that) are added to the system-wide trust store. IE and Chrome check that for CAs, Firefox will soon (https://bugzilla.mozilla.org/show_bug.cgi?id=1265113 https://bugzilla.mozilla.org/show_bug.cgi?id=1265113) (all this for Windows, I believe the same is true for OS X, Linux depends on your specific your setup)
    - cplease 10y ago
      > If you add CA certificates for the Wifi they probably (I'm not sure if you can tell it manually to not do that) are added to the system-wide trust store. Internet Properties -> Content -> Certificates -> Advanced

nostromo 10y ago

https://developer.mozilla.org/en-US/docs/Web/Security/Public_Key_Pinning https://developer.mozilla.org/en-US/docs/Web/Security/Public... >Firefox (and Chrome) disable Pin Validation for Pinned Hosts whose validated certificate chain terminates at a user-defined trust anchor (rather than a built-in trust anchor). This means that for users who imported custom root certificates all pinning violations are ignored. That last sentence is key. From Wikipedia: some browsers "disable pinning for certificate chains with private root certificates to enable various corporate content inspection scanners and web debugging tools. The RFC 7469 standard also recommends disabling pinning violation reports for such certificate chains."

colemickens 10y ago
Perfect! This is the missing link! Thank you for helping me understand.
cplease 10y ago
What does that have to do with wifi certificates?
- detaro 10y ago
  If you add CA certificates for the Wifi they probably (I'm not sure if you can tell it manually to not do that) are added to the system-wide trust store. IE and Chrome check that for CAs, Firefox will soon (https://bugzilla.mozilla.org/show_bug.cgi?id=1265113 https://bugzilla.mozilla.org/show_bug.cgi?id=1265113) (all this for Windows, I believe the same is true for OS X, Linux depends on your specific your setup)
  - cplease 10y ago
    > If you add CA certificates for the Wifi they probably (I'm not sure if you can tell it manually to not do that) are added to the system-wide trust store. Internet Properties -> Content -> Certificates -> Advanced