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Opened 2 years ago

Last modified 2 years ago

#21832 new defect

Problem with dropbear on 48681

Reported by: markus@… Owned by: developers
Priority: normal Milestone:
Component: packages Version: Trunk
Keywords: dropbear Cc:

Description

with DD 48681 i'am not able to connect to dropbear on mvebu/caiman.
The error in the log is:
authpriv.info dropbear[1923]: Early exit: Bad buf_getptr

Reboot doesn't help.

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Change History (2)

comment:1 Changed 2 years ago by diizzyy@…

Does this still occur on a fresh build?

comment:2 Changed 2 years ago by hnyman

That sounds similar as the issue as discussed in https://forum.openwrt.org/viewtopic.php?pid=311805#p311805

Root reason: dropbear has been compiled with ecdsa key support, but there is a zero-byte ecdsa key file /etc/dropbear/dropbear_ecdsa_host_key (instead of either no ecdsa key file or a proper key).

So, possibly this is just dropbear reacting badly to invalid key.

(fixes available in https://forum.openwrt.org/viewtopic.php?pid=311982#p311982 and https://forum.openwrt.org/viewtopic.php?pid=311993#p311993 , verified in https://forum.openwrt.org/viewtopic.php?pid=312103#p312103 )

Ps. If the original reporter was using Arokh's build, that has now been fixed.

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