Vulnerability Monitor

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CVE-2021-22902

The actionpack ruby gem (a framework for handling and responding to web requests in Rails) before 6.0.3.7, 6.1.3.2 suffers from a possible denial of service vulnerability in the Mime type parser of Action Dispatch. Carefully crafted Accept headers can cause the mime type parser in Action Dispatch to do catastrophic backtracking in the regular expression engine.

Published

2021-06-11T16:15:11.360

Last Modified

2024-11-21T05:50:52.777

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

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

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

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Secondary
CWE-400
Type: Primary
NVD-CWE-noinfo

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	rubyonrails	rails	< 6.0.3.7	Yes
Application	rubyonrails	rails	< 6.1.0.2	Yes

References

https://discuss.rubyonrails.org/t/cve-2021-22902-possible-denial-of-service-vulnerability-in-action-dispatch/77866 Exploit, Mitigation, Patch, Vendor Advisory ([email protected])
https://hackerone.com/reports/1138654 Permissions Required, Third Party Advisory ([email protected])
https://discuss.rubyonrails.org/t/cve-2021-22902-possible-denial-of-service-vulnerability-in-action-dispatch/77866 Exploit, Mitigation, Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://hackerone.com/reports/1138654 Permissions Required, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)