Update dependency puma to v5.6.4 [SECURITY]

[renovate]

This PR contains the following updates:

Package	Update	Change
puma	patch	5.6.2 -> 5.6.4

GitHub Vulnerability Alerts

CVE-2022-24790

Impact

When using Puma behind a proxy that does not properly validate that the incoming HTTP request matches the RFC7230 standard, Puma and the frontend proxy may disagree on where a request starts and ends. This would allow requests to be smuggled via the front-end proxy to Puma.

The following vulnerabilities are addressed by this advisory:

• Lenient parsing of Transfer-Encoding headers, when unsupported encodings should be rejected and the final encoding must be chunked.
• Lenient parsing of malformed Content-Length headers and chunk sizes, when only digits and hex digits should be allowed.
• Lenient parsing of duplicate Content-Length headers, when they should be rejected.
• Lenient parsing of the ending of chunked segments, when they should end with \r\n.

Patches

The vulnerability has been fixed in 5.6.4 and 4.3.12.

Workarounds

When deploying a proxy in front of Puma, turning on any and all functionality to make sure that the request matches the RFC7230 standard.

These proxy servers are known to have "good" behavior re: this standard and upgrading Puma may not be necessary. Users are encouraged to validate for themselves.

• Nginx (latest)
• Apache (latest)
• Haproxy 2.5+
• Caddy (latest)
• Traefik (latest)

References

HTTP Request Smuggling

For more information

If you have any questions or comments about this advisory:

• Open an issue in Puma
• See our security policy

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