The actionpack ruby gem before 6.1.3.2 suffers from a possible open redirect vulnerability. Specially crafted Host headers in combination with certain...
ディストリビューション別の修正状況
各ディストリビューションが公開している、この CVE の修正パッケージ
- Ubuntu UBUNTU-CVE-2021-22903 rails
原文の説明 取得元が公開している説明をそのまま載せています (多くは英語)。
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.
出典: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
参照URL
- patch discuss.rubyonrails.org
- report hackerone.com