[Bug 3786] New: openssh client no longer connects to dropbear server
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    bugzilla-daemon at mindrot.org
       
    Sun Feb  9 19:24:25 AEDT 2025
    
    
  
https://bugzilla.mindrot.org/show_bug.cgi?id=3786
            Bug ID: 3786
           Summary: openssh client no longer connects to dropbear server
           Product: Portable OpenSSH
           Version: 9.9p1
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P5
         Component: ssh
          Assignee: unassigned-bugs at mindrot.org
          Reporter: niki2inbox at gmail.com
As of version 9.9 the client does not connect to dropbear running on
OpenWRT.
With client 9.8 I am able to connect.
$ ./ssh root at 192.168.0.1
ssh_dispatch_run_fatal: Connection to 192.168.0.1 port 22: error in
libcrypto
$
Doing -vvv does not print anything else meaningful.
My client config:
Host 192.168.0.1
    PubkeyAcceptedAlgorithms +ssh-rsa
    HostkeyAlgorithms +ssh-rsa
The dropbear server arguments:
/usr/sbin/dropbear -F -P /var/run/dropbear.1.pid -p 22 -K 300 -T 3
SSH_ERR_LIBCRYPTO_ERROR is returned from sshkey_pkey_digest_verify in
sshkey.c
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