Latest Samba updates from NTGR broken

First off: If you’re not updating your ReadyNAS from the command line you’re most likely not affected.
Also, if you never logged into your ReadyNAS using SSH, you’re most likely not affected.

However, if you’re updating your ReadyNAS from the SSH command line using something along the lines of apt update && apt full-upgrade chances are that you received the latest, broken updates to the samba packages, identified by the extension netgear4 to their version number.

This update by NTGR should provide a fix for CVE-2021-44142. However, in the process this fix seems to have broken the connection between the samba daemons and the central system daemon that monitors whether a service is running or not. As a result your SMB services won’t start anymore. Or to be more precise: they will start but since they can’t report back their status to systemd they’ll be killed again right away by systemd.

The quick fix

To fix this and revert to the old versions of samba without the broken fix you need to

  • log into your ReadyNAS using SSH as the user “root”
  • run the following command
    apt install samba=2:4.8.0-12.netgear3 \
    samba-common-bin=2:4.8.0-12.netgear3 \
    samba-common=2:4.8.0-12.netgear3 \
    samba-libs=2:4.8.0-12.netgear3 \
    libwbclient0=2:4.8.0-12.netgear3 \
    samba-vfs-modules=2:4.8.0-12.netgear3 \
    winbind=2:4.8.0-12.netgear3 \
    libnss-winbind=2:4.8.0-12.netgear3 \
    smbclient=2:4.8.0-12.netgear3

I have no idea why NTGR published the broken samba packages seemingly without proper testing. Most likely their dev environment doesn’t exhibit the problem between samba and systemd.

Fix for the “LetsEncrypt problem”

As you may know, one of the Root-CAs that are used by LetsEncrypt expired on September 30, 2021. Unfortunately this not only affects older browsers but also the ReadyNAS, mainly because the package ca-certificates of its underlying operating system never got updated and still uses the the expired Root-CA.

This affects all tools on the NAS that have to connect to external systems that use certificates from LetsEncrypt – and of course some add-ons like Nextcloud that regularly try to connect to external sites for updates.

To fix the problem I backported the ca-certificates package from the current Debian distribution (“bullseye”) to the ReadyNAS. I also rebuilt the most affected tools like curl, wget, gnutls and openssl. The complete package is available as a free add-on:

To install, make sure your ReadyNAS has a working internet connection (check the DNS settings) and just upload as you would with a normal add-on.

Note: After installation the add-on will NOT show up in the list of installed add-ons. This is done on purpose to not clutter the interface. If in doubt just install again, no harm there.

If you find the add-on useful, please consider a donation:

TransmissionBT 2.84 (R4Sparc, R4x86, R5ARM)

The TransmissionBT team released a security bugfix, so here are the new add-ons for ReadyNAS R4Sparc, R4x86 and R5ARM: