CVE-2021-22903: 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…

medium6.1CVSS 3.1

AVNACLPRNUIRSCCLILAN

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`.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
actionpack_project	actionpack	>= 6.1.0.rc2 < 6.1.3.2	6.1.3.2
debian	rails	—	—
rubyonrails	rails	—	—
rubyonrails	rails	>= 6.1.1 < 6.1.3.2	6.1.3.2

CVSS provenance

nvdv3.16.1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

ghsa6.1MEDIUM

osv6.1MEDIUM