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 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`.
Configurations

Configuration 1

cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*
cpe:2.3:a:rubyonrails:rails:6.1.0:rc2:*:*:*:*:*:*

Information

Published : 2021-06-11 04:15

Updated : 2021-10-21 02:32


NVD link : CVE-2021-22903

Mitre link : CVE-2021-22903

Products Affected
No products.
CWE
CWE-601

URL Redirection to Untrusted Site ('Open Redirect')