CVE-2021-22903

MEDIUM

6.1

Description

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`.

CVE Details

CVSS v3.1 Score6.1

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published6/11/2021

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

rubyonrails:rails

Weaknesses (CWE)

CWE-601CWE-601

References

https://discuss.rubyonrails.org/t/cve-2021-22903-possible-open-redirect-vulnerability-in-action-pack/77867(support@hackerone.com)

https://hackerone.com/reports/1148025(support@hackerone.com)

https://discuss.rubyonrails.org/t/cve-2021-22903-possible-open-redirect-vulnerability-in-action-pack/77867(af854a3a-2127-422b-91ae-364da2661108)

https://hackerone.com/reports/1148025(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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