sshd: fatal: seteuid XXX : No such device or address
Corinna Vinschen
corinna-cygwin@cygwin.com
Thu Mar 14 12:10:00 GMT 2019
On Mar 14 12:39, renaud.rolles@giraudbtp.com wrote:
> Hello the list,
>
> Thanks for all the work and effort put into this.
> Since two days i cannot login anymore (password less) with ssh into my
> server
>
> Server is :
> Microsoft Windows Server 2012 R2 Essentials / 6.3.9600 N/A version 9600
>
> Cygwin was not up to date, but I have since updated it
> CYGWIN_NT-6.3 [MACHINE NAME] 3.0.3(0.338/5/3) 2019-03-09 19:12 x86_64 Cygwin
>
> I can login via password, it work and lets me in.
> But if i tried with my keys, I get in the event viewer :
> sshd: PID 3777: fatal: seteuid 1049076: No such device or address
>
> I tried googling around, reinstalled multiple times sshd, the user and the
> service with no luck so far.
> I was working for several years now.
>
> For now I have no clue, so i'm asking what did I do wrong ?
You should try two things:
- Make sure to login with the Administrator account case-sensitive.
If your account is called "Administrator", then use an uppercase
'A' when logging in.
This case-sensitivity issue is a temporary workaround for a
potential security problem in OpenSSH. This will be rectified
with OpenSSH 8.0 which allows to login case-insentive again.
- If that doesn't help, switch the user running the sshd service from
"cyg_server" to SYSTEM (the services GUI calls it "LocalSystem")
Cygwin switched the logon method and this method doesn't run
under the "cyg_server" account sometimes. However, switching
back to "LocalSystem" instead of having to create a special
"cyg_server" service account is one of the advantages of the
new logon method. For details, see
https://cygwin.com/cygwin-ug-net/ntsec.html#ntsec-nopasswd1
HTH,
Corinna
--
Corinna Vinschen
Cygwin Maintainer
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