Impact

In some situations, it is possible to have open redirects where users can be redirected from your site to any other site using a specially crafted URL.
This is only the case for installations where the default Hostname Identification is used and the environment uses tenants that have force_https set to true (default: false)

Patches

Version 5.7.2 contains the relevant patches to fix this bug. Stripping the URL from special characters to prevent specially crafted URL's from being redirected to.

Workarounds

There is a simple way to work around the security issue

• Set the force_https to every tenant to false

References

https://nvd.nist.gov/vuln/detail/CVE-2018-11784

For more information

If you have any questions or comments about this advisory:

• Contact us in Discord: https://tenancy.dev/chat

References

• GHSA-4r8q-gv9j-3xx6
• https://nvd.nist.gov/vuln/detail/CVE-2021-32645
• tenancy/multi-tenant@9c837a2
• https://packagist.org/packages/hyn/multi-tenant
• https://webmasters.googleblog.com/2009/01/open-redirect-urls-is-your-site-being.html