CVE-2022-44570

HIGH

Denial of service via header parsing in Rack

Published January 18, 2023Updated February 13, 2025Source: osv

Summary

There is a possible denial of service vulnerability in the Range header parsing component of Rack. This vulnerability has been assigned the CVE identifier CVE-2022-44570. Versions Affected: >= 1.5.0 Not affected: None. Fixed Versions: 2.0.9.2, 2.1.4.2, 2.2.6.2, 3.0.0.1 Impact Carefully crafted input can cause the Range header parsing component in Rack to take an unexpected amount of time, possibly resulting in a denial of service attack vector. Any applications that deal with Range requests (such as streaming applications, or applications that serve files) may be impacted. Releases The fixed releases are available at the normal locations. Workarounds There are no feasible workarounds for this issue. Patches To aid users who aren’t able to upgrade immediately we have provided patches for the two supported release series. They are in git-am format and consist of a single changeset. 2-0-Fix-ReDoS-in-Rack-Utils.get_byte_ranges.patch - Patch for 2.0 series 2-1-Fix-ReDoS-in-Rack-Utils.get_byte_ranges.patch - Patch for 2.1 series 2-2-Fix-ReDoS-in-Rack-Utils.get_byte_ranges.patch - Patch for 2.2 series 3-0-Fix-ReDoS-in-Rack-Utils.get_byte_ranges.patch - Patch for 3.0 series

Remediation

Upgrade to the fixed version using your package manager.

Bundler

Update rack to 2.0.9.2 or later

gem install rack -v 2.0.9.2

Bundler

Update rack to 2.1.4.2 or later

gem install rack -v 2.1.4.2

Bundler

Update rack to 2.2.6.2 or later

gem install rack -v 2.2.6.2

Bundler

Update rack to 3.0.4.1 or later

gem install rack -v 3.0.4.1

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (4)

Package	Ecosystem	Affected	Fixed In
rack	rubygems	1.5.0, 1.5.1, 1.5.2, 1.5.3 (+30 more)	2.0.9.2
rack	rubygems	2.1.0, 2.1.1, 2.1.2, 2.1.3 (+2 more)	2.1.4.2
rack	rubygems	2.2.0, 2.2.1, 2.2.2, 2.2.3 (+5 more)	2.2.6.2
rack	rubygems	3.0.0, 3.0.1, 3.0.2, 3.0.3 (+1 more)	3.0.4.1

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-1333
View on MITRE
CWE-400
Uncontrolled Resource ConsumptionMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 7.5 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Frequently Asked Questions

What is CVE-2022-44570?: Denial of service via header parsing in Rack This vulnerability has been assigned a severity rating of HIGH (CVSS score: 7.5/10).
How do I check if my project is affected by CVE-2022-44570?: CVE-2022-44570 affects rack. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2022-44570 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

7.5

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-65f5-mfpf-vfhj

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