Description
The actionpack ruby gem before 6.1.3.2 suffers from a possible open redirect vulnerability. Specially crafted Host headers in combination with certain "allowed host" formats can cause the Host Authorization middleware in Action Pack to redirect users to a malicious website. This is similar to CVE-2021-22881. Strings in config.hosts that do not have a leading dot are converted to regular expressions without proper escaping. This causes, for example, `config.hosts << "sub.example.com"` to permit a request with a Host header value of `sub-example.com`.
Remediation
References
Related Vulnerabilities
WordPress Plugin Uncanny Toolkit for LearnDash Cross-Site Request Forgery (3.6.4.1)
Oracle Database Server CVE-2006-1870 Vulnerability (CVE-2006-1870)
Apache HTTP Server Other Vulnerability (CVE-2002-0840)
Dotclear Improper Control of Generation of Code ('Code Injection') Vulnerability (CVE-2014-1613)