Comment by 0x0

2 days ago

For OpenWRT, AsusWRT etc, I believe they use dropbear ssh by default instead of OpenSSH, which apparently isn't affected?

4 comments

0x0

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dhx  2 days ago

Yes, correct for OpenWrt. OpenWrt defaults to dropbear for both server and client. However, more advanced users may optionally choose to replace it with OpenSSH, or install OpenSSH side-by-side, to gain additional features of OpenSSH.

  > root@OpenWrt:~# cat /etc/openwrt_release | grep DISTRIB_RELEASE
  > DISTRIB_RELEASE='25.12.6'

  > root@OpenWrt:~# which ssh
  > /usr/bin/ssh
  > root@OpenWrt:~# ssh -V
  > Dropbear v2025.89
  > root@OpenWrt:~# ldd /usr/bin/ssh
  >  /lib/ld-musl-aarch64.so.1 (0x7f8e120000)
  >  libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x7f8e0b8000)
  >  libc.so => /lib/ld-musl-aarch64.so.1 (0x7f8e120000)

  > root@OpenWrt:~# which dropbear
  > /usr/sbin/dropbear
  > root@OpenWrt:~# dropbear -V
  > Dropbear v2025.89
  > root@OpenWrt:~# ldd /usr/sbin/dropbear
  >  /lib/ld-musl-aarch64.so.1 (0x7fbb900000)
  >  libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x7fbb898000)
  >  libc.so => /lib/ld-musl-aarch64.so.1 (0x7fbb900000)

  > root@OpenWrt:~# apk search openssh
  > openssh-client-10.6_p1-r2
  > openssh-client-utils-10.6_p1-r2
  > openssh-keygen-10.6_p1-r2
  > openssh-moduli-10.6_p1-r2
  > openssh-server-10.6_p1-r2
  > openssh-server-pam-10.6_p1-r2
  > openssh-sftp-avahi-service-10.6_p1-r2
  > openssh-sftp-client-10.6_p1-r2
  > openssh-sftp-server-10.6_p1-r2
  > openssh-sk-helper-10.6_p1-r2

krekr  2 days ago

I've just tried with my AsusWRT (3.0.0.4.386_69196) and didn't get it to work

gregor@krekrm3 ~ % ssh root@192.168.1.1 root@192.168.1.1's password: Permission denied, please try again. root@192.168.1.1's password: Permission denied, please try again. root@192.168.1.1's password: Connection closed by 192.168.1.1 port 22