Errors after switching to community feed on GSM-appliance

[cgxx]

Hi there,

we have a GSM600 appliance but unfortunately (currently) no enterprise-subscription.

After syncing from the community-feed, sync log shows no errors, but scans refuse to start with the following error:

Interrupting scan because GVM is exiting.
VTs list is empty

Journal keeps repeating:

Erroneous or missing signature for checksums file /opt/greenbone/feed/plugins/sha256sums
No checksum for /opt/greenbone/feed/plugins/plugin_feed_info.inc
OSPD[803] ERROR: (ospd_openvas.openvas) OpenVAS Scanner failed to load VTs. Command ‘[‘openvas’, ‘–update-vt-info’]’ returned non-zero exit status 1.

I found a post here explaining that the community feed integrity key is missing:

No Checksum for plugin_feed_info.inc

Hi @michealkeines ! You have in the openvas.conf file (check with openvas -s) the optionnasl_no_signature_check, probably set to no. Openvas will perform a signature check of the sha256 file first, and if it is valid, it will continue with hash for each single file. As you can see in the log, it is the messages "Erroneous or missing signature for checksums file… ". So, you have two options to solve the issue: install the Community Feed integrity key. This gpg key can be downloaded at https…

But I’m not sure how to solve this on Greenbone OS as the mentioned post says it should be included already. Should I enable superuser-access and load the key for a specific user, and if this is the case, what is the correct user?

[edit] I enabled superuser access and worked around the signature check by setting nasl_no_signature_check to yes, so scans are running again but it would be nice to get the signature verificiation working again.

Another problem is that I am not able to update due to complaints about system integrity (which already were shown before). It seems the apt-key has expired in february (The sytem was not able to update for a while due to firewall restrictions). Where can I find a recent key? Is is possible to switch trial version at all without a subscription? [/edit]

Thanks for any help

regards
Christian