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Send ext-info-c with kex algorithms #622

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merged 1 commit into from
Jul 20, 2020

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@fmeum fmeum commented Jul 20, 2020

Some SSH servers will not honor the negotiated rsa-sha2-256 algorithms
if the client does not indicate support for SSH_MSG_EXT_INFO messages.
Since we only need to accept these messages, but are free to ignore
their contents, adding support amounts to sending "ext-info-c" with our
kex algorithm proposal.

Fixes #608

Some SSH servers will not honor the negotiated rsa-sha2-256 algorithms
if the client does not indicate support for SSH_MSG_EXT_INFO messages.
Since we only need to accept these messages, but are free to ignore
their contents, adding support amounts to sending "ext-info-c" with our
kex algorithm proposal.
@fmeum fmeum force-pushed the fhenneke_ext_info_fix branch from 0cd47c1 to 48dff32 Compare July 20, 2020 10:37
@hierynomus hierynomus merged commit 64f448d into hierynomus:master Jul 20, 2020
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Possible issue with negotiating rsa-sha2-512
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