Cloudron makes it easy to run web apps like WordPress, Nextcloud, GitLab on your server. Find out more or install now.


Secure LDAP?



  • Guys,
    I noticed while fooling around in nextcloud that it is using LDAP as opposed to LDAPS to connect to cloudron LDAP. This means that requests and creds are sent in plain text. Now somebody would have to be on the container network to sniff these, but still a big no no. (I once had my enterprise admin credentials exposed on a webex because my boss used LDAP instead of LDAPS and was reviewing a PCAP live.)


  • Staff

    As you said this is only happening within the server local container network. If a person has access to that, that person has numerous ways to get a user's password. For example just adding a console.log() in the code which validates the password. I don't really see how the security is improved by making the local connection using locally available certificates.


  • Staff

    I have pondered adding CapDrop NET_RAW in the past to all our containers but this will break some tools like ping. But the real reason I haven't added it is that because as @nebulon said, if user gets access to container network, then all is lost already. This is why in our previous release, we started making sure that apps that use the docker addon can can only be installed by owner privileges (i.e a user who already has ssh access).

    One attack I can think of is if the app container image is itself compromised. Atleast, right now, all app images are personally tested by us and we only install upstream apt packages and we don't allow 3rd party packagers. So, maybe dropping NET_RAW is worth it for future proofing. AFAIK, this won't break anything.


Log in to reply