TerriaJS-Server has a domain validation bypass vulnerability in its proxy allowlist
TerriaJS-Server is a NodeJS Express server for TerriaJS, a library for building web-based geospatial data explorers. A validation bug in versions prior to 4.0.3 allows an attacker to proxy domains not explicitly allowed in the `proxyableDomains` configuration. Version 4.0.3 fixes the issue.
Versions of `terriajs-server`prior to 2.7.4 are vulnerable to Server-Side Request Forgery (SSRF). If an attacker has access to a server whitelisted by the terriajs-server proxy or if the attacker is able to modify the DNS records of a domain whitelisted by the terriajs-server proxy, the attacker can use the terriajs-server proxy to access any HTTP-accessible resources that are accessible to the server, including private resources in the hosting environment.
## Recommendation
Upgrade to version 2.7.4 or later.