From f97d14a056c9b6ec6bf46d24e0c04b4893e78d41 Mon Sep 17 00:00:00 2001
From: Aaron Patterson <aaron@rubyonrails.org>
Date: Tue, 4 May 2021 15:49:21 -0700
Subject: [PATCH] Prevent slow regex when parsing host authorization header

The old regex could take too long when parsing an authorization header,
and this could potentially cause a DoS vulnerability

[CVE-2021-22904]
---
 .../lib/action_controller/metal/http_authentication.rb          | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/usr/share/gems/gems/actionpack-5.2.4.4/lib/action_controller/metal/http_authentication.rb b/usr/share/gems/gems/actionpack-5.2.4.4/lib/action_controller/metal/http_authentication.rb
index 01676f3..d2e6674 100644
--- a/usr/share/gems/gems/actionpack-5.2.4.4/lib/action_controller/metal/http_authentication.rb
+++ b/usr/share/gems/gems/actionpack-5.2.4.4/lib/action_controller/metal/http_authentication.rb
@@ -406,7 +406,7 @@ module ActionController
     module Token
       TOKEN_KEY = "token="
       TOKEN_REGEX = /^(Token|Bearer)\s+/
-      AUTHN_PAIR_DELIMITERS = /(?:,|;|\t+)/
+      AUTHN_PAIR_DELIMITERS = /(?:,|;|\t)/
       extend self
 
       module ControllerMethods
-- 
2.23.0

