CVEvulnerability
CVE-2021-22904
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2021-06-11
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-400
Description
The actionpack ruby gem before 6.1.3.2, 6.0.3.7, 5.2.4.6, 5.2.6 suffers from a possible denial of service vulnerability in the Token Authentication logic in Action Controller due to a too permissive regular expression. Impacted code uses `authenticate_or_request_with_http_token` or `authenticate_with_http_token` for request authentication.
Affected configurations
• rubyonrails rails (< 5.2.4.6)
• rubyonrails rails (>= 5.2.5 < 5.2.6)
• rubyonrails rails (>= 6.0.0 < 6.0.3.7)
• rubyonrails rails (>= 6.1.0 < 6.1.3.2)
Related
Weakness · CWE (1)
- CWE-400 Uncontrolled Resource Consumption weakness
References
- https://discuss.rubyonrails.org/t/cve-2021-22904-possible-dos-vulnerability-in-action-controller-token-authentication/77869 Exploit, Mitigation, Patch, Vendor Advisory
- https://hackerone.com/reports/1101125 Permissions Required, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210805-0009/ Third Party Advisory
- https://discuss.rubyonrails.org/t/cve-2021-22904-possible-dos-vulnerability-in-action-controller-token-authentication/77869 Exploit, Mitigation, Patch, Vendor Advisory
- https://hackerone.com/reports/1101125 Permissions Required, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210805-0009/ Third Party Advisory