Transmit 5.7.6 TLS Bug

Public service announcement - if you are using the (otherwise wonderful) Transmit SFTP software, be aware of a nasty bug that gives corrupted file transfers. My buddy and I just happened to detect the problem by accident, and it would have made for interesting times had we not.

The bug manifests as a silent corruption of uploaded files, which end up the right length, but with patches of 0x00 bytes in the middle.

They say “revert to TLS 1.2” but we still saw the bug with TLS 1.2, and had to drop down to 1.1 to get it to work.

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