[ATTN MAINTAINER] openssh
Achim Gratz
Stromeko@nexgo.de
Sun Nov 28 09:53:57 GMT 2021
Achim Gratz writes:
> These patches work for 32bit also and I believe they are correct, but
> that build should not be made available due to a bug in libfido2 that
> crashes when trying to free the memory associated with the WebAuthn
> payload returned. Without these patches applied you can still use the
> fallback to USB-HID when you are an administrator.
The call into WebAuthn completely messes up the stack apparently. The
returned object looks OK once you realize it is a version 1 and thus the
extension fields are bogus, but the whole thing crashes if you do just
one more call. Gdb session:
https://paste.c-net.org/SerumLoser
Any ideas what that might be?
Regards,
Achim.
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