CVE-2021-22903

published 2021-06-11

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…

Priority P4 27 medium 6.1 CVSS 3.1

AV N AC L PR N UI R S C C L I L A N

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`.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
actionpack_project	actionpack	>= 6.1.0.rc2 < 6.1.3.2	6.1.3.2
debian	rails	—	—
rubyonrails	rails	—	—
rubyonrails	rails	>= 6.1.1 < 6.1.3.2	6.1.3.2

CVSS provenance

nvd v3.1 6.1 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

nvd v2.0 5.8 MEDIUM AV:N/AC:M/Au:N/C:P/I:P/A:N

ghsa 6.1 MEDIUM

osv 6.1 MEDIUM

vendor_debian 6.1 LOW

vendor_redhat 6.1 MEDIUM

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CWE-601