CVE-2024-21510 Information

Description

Versions of the package sinatra from 0.0.0 are vulnerable to Reliance on Untrusted Inputs in a Security Decision via the X-Forwarded-Host (XFH) header. When making a request to a method with redirect applied it is possible to trigger an Open Redirect Attack by inserting an arbitrary address into this header. If used for caching purposes such as with servers like Nginx or as a reverse proxy without handling the X-Forwarded-Host header attackers can potentially exploit Cache Poisoning or Routing-based SSRF.

Reference

https://security.snyk.io/vuln/SNYK-RUBY-SINATRA-6483832 https://github.com/sinatra/sinatra/blob/b626e2d82c23b4fde0b51782fd32ca27ccde1d1a/lib/sinatra/base.rb%23L319 https://github.com/sinatra/sinatra/blob/b626e2d82c23b4fde0b51782fd32ca27ccde1d1a/lib/sinatra/base.rb%23L323C1-L343C17 https://github.com/sinatra/sinatra/pull/2010