Vulnerability Monitor

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CVE-2021-22881

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.

Published

2021-02-11T18:15:17.460

Last Modified

2024-11-21T05:50:49.740

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.1 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:N

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

8.6

Impact Score

4.9

Weaknesses

Type: Secondary
CWE-601
Type: Primary
CWE-601

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	rubyonrails	rails	< 6.0.3.5	Yes
Application	rubyonrails	rails	< 6.1.2.1	Yes
Operating System	fedoraproject	fedora	33	Yes

References

http://www.openwall.com/lists/oss-security/2021/05/05/2 Mailing List, Mitigation, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/08/20/1 Mailing List, Mitigation, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/12/14/5 Exploit, Mailing List, Patch ([email protected])
https://benjamin-bouchet.com/cve-2021-22881-faille-de-securite-dans-le-middleware-hostauthorization/ Patch, Third Party Advisory ([email protected])
https://discuss.rubyonrails.org/t/cve-2021-22881-possible-open-redirect-in-host-authorization-middleware/77130 Mitigation, Patch, Vendor Advisory ([email protected])
https://hackerone.com/reports/1047447 Exploit, Patch, Third Party Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XQ3NS4IBYE2I3MVMGAHFZBZBIZGHXHT3/ ([email protected])
http://www.openwall.com/lists/oss-security/2021/05/05/2 Mailing List, Mitigation, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/08/20/1 Mailing List, Mitigation, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/12/14/5 Exploit, Mailing List, Patch (af854a3a-2127-422b-91ae-364da2661108)
https://benjamin-bouchet.com/cve-2021-22881-faille-de-securite-dans-le-middleware-hostauthorization/ Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://discuss.rubyonrails.org/t/cve-2021-22881-possible-open-redirect-in-host-authorization-middleware/77130 Mitigation, Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://hackerone.com/reports/1047447 Exploit, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XQ3NS4IBYE2I3MVMGAHFZBZBIZGHXHT3/ (af854a3a-2127-422b-91ae-364da2661108)