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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTMzdmYtNHhnZy05cjU4
HTTP Response Splitting (Early Hints) in Puma
Impact
If an application using Puma allows untrusted input in an early-hints header, an attacker can use a carriage return character to end the header and inject malicious content, such as additional headers or an entirely new response body. This vulnerability is known as HTTP Response Splitting.
While not an attack in itself, response splitting is a vector for several other attacks, such as cross-site scripting (XSS).
This is related to CVE-2020-5247, which fixed this vulnerability but only for regular responses.
Patches
This has been fixed in 4.3.3 and 3.12.4.
Workarounds
Users can not allow untrusted/user input in the Early Hints response header.
For more information
If you have any questions or comments about this advisory:
- Open an issue in puma
- Email us a project maintainer. Email addresses are listed in our Code of Conduct.
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTMzdmYtNHhnZy05cjU4
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: about 4 years ago
Updated: 6 months ago
CVSS Score: 6.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Identifiers: GHSA-33vf-4xgg-9r58, CVE-2020-5249
References:
- https://github.com/puma/puma/security/advisories/GHSA-33vf-4xgg-9r58
- https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v
- https://github.com/puma/puma/commit/c22712fc93284a45a93f9ad7023888f3a65524f3
- https://owasp.org/www-community/attacks/HTTP_Response_Splitting
- https://nvd.nist.gov/vuln/detail/CVE-2020-5249
- https://lists.fedoraproject.org/archives/list/[email protected]/message/BMJ3CGZ3DLBJ5WUUKMI5ZFXFJQMXJZIK/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/DIHVO3CQMU7BZC7FCTSRJ33YDNS3GFPK/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/NJ3LL5F5QADB6LM46GXZETREAKZMQNRD/
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2020-5249.yml
- https://github.com/advisories/GHSA-33vf-4xgg-9r58
Blast Radius: 36.4
Affected Packages
rubygems:puma
Dependent packages: 627Dependent repositories: 404,320
Downloads: 357,648,490 total
Affected Version Ranges: >= 4.0.0, < 4.3.3, < 3.12.4
Fixed in: 4.3.3, 3.12.4
All affected versions: 0.8.0, 0.8.1, 0.8.2, 0.9.0, 0.9.1, 0.9.2, 0.9.3, 0.9.4, 0.9.5, 1.0.0, 1.1.0, 1.1.1, 1.2.0, 1.2.1, 1.2.2, 1.3.0, 1.3.1, 1.4.0, 1.5.0, 1.6.0, 1.6.1, 1.6.2, 1.6.3, 2.0.0, 2.0.1, 2.1.0, 2.1.1, 2.2.0, 2.2.1, 2.2.2, 2.3.0, 2.3.1, 2.3.2, 2.4.0, 2.4.1, 2.5.0, 2.5.1, 2.6.0, 2.7.0, 2.7.1, 2.8.0, 2.8.1, 2.8.2, 2.9.0, 2.9.1, 2.9.2, 2.10.0, 2.10.1, 2.10.2, 2.11.0, 2.11.1, 2.11.2, 2.11.3, 2.12.0, 2.12.1, 2.12.2, 2.12.3, 2.13.0, 2.13.1, 2.13.2, 2.13.3, 2.13.4, 2.14.0, 2.15.0, 2.15.1, 2.15.2, 2.15.3, 2.16.0, 3.0.0, 3.0.1, 3.0.2, 3.1.0, 3.1.1, 3.2.0, 3.3.0, 3.4.0, 3.5.0, 3.5.1, 3.5.2, 3.6.0, 3.6.1, 3.6.2, 3.7.0, 3.7.1, 3.8.0, 3.8.1, 3.8.2, 3.9.0, 3.9.1, 3.10.0, 3.11.0, 3.11.1, 3.11.2, 3.11.3, 3.11.4, 3.12.0, 3.12.1, 3.12.2, 4.0.0, 4.0.1, 4.1.0, 4.1.1, 4.2.0, 4.2.1, 4.3.0, 4.3.1
All unaffected versions: 3.12.4, 3.12.5, 3.12.6, 4.3.3, 4.3.4, 4.3.5, 4.3.6, 4.3.7, 4.3.8, 4.3.9, 4.3.10, 4.3.11, 4.3.12, 5.0.0, 5.0.1, 5.0.2, 5.0.3, 5.0.4, 5.1.0, 5.1.1, 5.2.0, 5.2.1, 5.2.2, 5.3.0, 5.3.1, 5.3.2, 5.4.0, 5.5.0, 5.5.1, 5.5.2, 5.6.0, 5.6.1, 5.6.2, 5.6.4, 5.6.5, 5.6.6, 5.6.7, 5.6.8, 6.0.0, 6.0.1, 6.0.2, 6.1.0, 6.1.1, 6.2.0, 6.2.1, 6.2.2, 6.3.0, 6.3.1, 6.4.0, 6.4.1, 6.4.2