CVE-2021-22881: The Host Authorization middleware in Action Pack before 6.1.2.1, 6.0.3.5 suffers from an open redirect vulnerability. Specially crafted `Host` headers in…

medium6.1CVSS 3.1

AVNACLPRNUIRSCCLILAN

EXPLOIT

The Host Authorization middleware in Action Pack before 6.1.2.1, 6.0.3.5 suffers from an 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. Impacted applications will have allowed hosts with a leading dot. When an allowed host contains a leading dot, a specially crafted `Host` header can be used to redirect to a malicious website.

Affected

19 ranges

Vendor	Product	Version range	Fixed in
actionpack_project	actionpack	>= 6.0.0 < 6.0.4.2	6.0.4.2
actionpack_project	actionpack	>= 6.0.0 < 6.0.3.5	6.0.3.5
actionpack_project	actionpack	>= 6.0.0 < 6.0.4.1	6.0.4.1
actionpack_project	actionpack	>= 6.1.0 < 6.1.4.2	6.1.4.2
actionpack_project	actionpack	>= 6.1.0 < 6.1.2.1	6.1.2.1
actionpack_project	actionpack	>= 6.1.0 < 6.1.4.1	6.1.4.1
actionpack_project	actionpack	>= 6.1.0.rc2 < 6.1.3.2	6.1.3.2
debian	rails	< rails 2:6.0.3.5+dfsg-1 (bookworm)	rails 2:6.0.3.5+dfsg-1 (bookworm)
debian	rails	—	—
fedoraproject	fedora	—	—
https	github.com_rails_rails	—	—
rubyonrails	rails	—	—
rubyonrails	rails	>= 0 < 2:6.0.3.5+dfsg-1	2:6.0.3.5+dfsg-1
rubyonrails	rails	>= 0 < 2:6.0.3.5+dfsg-1	2:6.0.3.5+dfsg-1
rubyonrails	rails	>= 0 < 2:6.0.3.5+dfsg-1	2:6.0.3.5+dfsg-1
rubyonrails	rails	>= 0 < 2:6.0.3.5+dfsg-1	2:6.0.3.5+dfsg-1
rubyonrails	rails	>= 6.0.0 < 6.0.3.5	6.0.3.5
rubyonrails	rails	>= 6.1.0 < 6.1.2.1	6.1.2.1
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