CVEvulnerability
CVE-2021-22881
6.1 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2021-02-11
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.1 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CVSS 2.0 ([email protected])
- 5.8 MEDIUM — AV:N/AC:M/Au:N/C:P/I:P/A:N
- Weaknesses
- CWE-601
Description
The Host Authorization middleware in Action Pack before 6.1.2.1, 6.0.3.5 suffers from an 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. Impacted applications will have allowed hosts with a leading dot. When an allowed host contains a leading dot, a specially crafted `Host` header can be used to redirect to a malicious website.
Affected configurations
• rubyonrails rails (>= 6.0.0 < 6.0.3.5)
• rubyonrails rails (>= 6.1.0 < 6.1.2.1)
• fedoraproject fedora 33
Related
Weakness · CWE (1)
- CWE-601 URL Redirection to Untrusted Site weakness
References
- http://www.openwall.com/lists/oss-security/2021/05/05/2 Mailing List, Mitigation, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/08/20/1 Mailing List, Mitigation, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/12/14/5 Exploit, Mailing List, Patch
- https://benjamin-bouchet.com/cve-2021-22881-faille-de-securite-dans-le-middleware-hostauthorization/ Patch, Third Party Advisory
- https://discuss.rubyonrails.org/t/cve-2021-22881-possible-open-redirect-in-host-authorization-middleware/77130 Mitigation, Patch, Vendor Advisory
- https://hackerone.com/reports/1047447 Exploit, Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XQ3NS4IBYE2I3MVMGAHFZBZBIZGHXHT3/ lists.fedoraproject.org
- http://www.openwall.com/lists/oss-security/2021/05/05/2 Mailing List, Mitigation, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/08/20/1 Mailing List, Mitigation, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/12/14/5 Exploit, Mailing List, Patch
- https://benjamin-bouchet.com/cve-2021-22881-faille-de-securite-dans-le-middleware-hostauthorization/ Patch, Third Party Advisory
- https://discuss.rubyonrails.org/t/cve-2021-22881-possible-open-redirect-in-host-authorization-middleware/77130 Mitigation, Patch, Vendor Advisory
- https://hackerone.com/reports/1047447 Exploit, Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XQ3NS4IBYE2I3MVMGAHFZBZBIZGHXHT3/ lists.fedoraproject.org