Questions tagged [multi-tenancy]

Multi-tenancy involves a single software instance serving multiple groups, each of which has specific privileges to maintain separation of concerns.

Filter by
Sorted by
Tagged with
1
vote
0answers
41 views

Security concerns over predictable URLs in a multi-tenant environment

Consider a multi-tenant SaaS application that uses domain names to identify which customer to serve. Customers access the application using client001.ourdomain.com, client002.ourdomain.com, etc. The ...
0
votes
1answer
102 views

Is it reasonably possible to enable vulnerabilities via gadget chains?

The meta question here is that I'm trying to understand the risks to multitenant java applications from gadget chains. For example, we're all familiar with the deserialization gadget that allows the ...
1
vote
0answers
36 views

Sharing individually encrypted elements between users of a system

I'm creating a file sharing system, in which the unique key of a file is one of the critical components to the retrieval of that file. For simplicity, lets say the unique keys are the file names. I'd ...
5
votes
2answers
764 views

Manage SSL certificates for a multi-tenant website

We have given customers the option to allow custom domains which ultimately point to our server by changing the CNAME. Some of our customers would like to have SSL enabled to their domain but I am ...
0
votes
1answer
249 views

Should we encrypt data in a multi-tenancy product in the cloud?

We have started to develop a multi-tenancy product. The product will be deployed in the cloud. Should we encrypt the product data? Should the data for each tenant be encrypted using its own key? ...
1
vote
1answer
440 views

Security risks of multitenancy

Is there a security risk of using same firewall hardware as the company perimeter firewall device (providing multi-tenancy) which is already shared by other companies? Is there a possibility of being ...
5
votes
2answers
589 views

How to manage customer-supplied encryption keys in a multi-tenant cloud SaaS?

I'm working at an EU-based company and we'd like to offer business customers some kind of OS-independent cloud-based SaaS platform for processing and storing sensitive (health) data. We'd like to ...
0
votes
1answer
855 views

Reverse proxy sharing one certificate for multiple servers using Subject Alternative Name

The following is a scenario for an attack where one website can impersonate another. I am told (including by this answer) that it's impossible, but I would like to understand exactly what prevents it. ...
3
votes
2answers
296 views

It it a good idea to whitelist inbound email using a Hash on the address? (Similar to BATV, but with DKIM)

Problem Statement I'm looking at ways to ensure that business partners, or emails from trusted senders, never get quarantined; ....in other words prevent "ham being seen as spam". Ideally this ...
3
votes
1answer
1k views

How to manage passwords in a multi-tenant surrounding?

I am building a multi-tenant application in a shared database model. I would like to encrypt sensitive data so that only a particular tenant could have access to his data. What is the best mode to ...
17
votes
3answers
3k views

Multi-tenancy, SSL Certificates, and Subject Alternative Name

The X509 specification allows a CA to issue a single certificate for multiple hostnames, by using the "Subject Alternative Name" extension. From the spec: The subject alternative name ...