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.
| Software | From | Fixed in |
|---|---|---|
| rubyonrails / rails | 6.1.1 | 6.1.3.2 |
| rubyonrails / rails | 6.1.0-rc2 | 6.1.0-rc2.x |
actionpack
|
6.1.0 | 6.1.3.2 |
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