Dropbear SSH integrity error

Zbynek Michl zbynek.michl at gmail.com
Fri Nov 13 19:32:36 AWST 2015


Hi Matt,

Ok, I reported it to Mikrotik, thanks for your help! :)

Regards,
Zbynek

On Thu, Nov 12, 2015 at 3:01 PM, Matt Johnston <matt at ucc.asn.au> wrote:
> On Thu, Nov 12, 2015 at 10:28:27AM +0100, Zbynek Michl wrote:
>> Hello,
>>
>> I have a problem with SSH connection from my Ubiquiti AirOS device to
>> a Mikrotik router.
>> I use AirOS v5.5.11 (Dropbear SSH client v2013.58) and Mikrotik's
>> RouterOS version 6.33 (also older versions have the same problem).
>>
>> # ssh demo at demo.mt.lv
>> ssh: Connection to demo at demo.mt.lv:22 exited: Integrity error (bad
>> packet size -22146333)
>
> It looks like ROSSH doesn't support "kex first follows".
> Commenting out USE_KEX_FIRST_FOLLOWS in sysoptions.h will
> fix that. Could you report it to Mikrotik? Github used
> libssh which had the same issue, fixed in libssh 0.7
>
> Cheers,
> Matt


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