Envoy forwards invalid Http2/Http3 downstream headers
Envoy is an open source edge and service proxy designed for cloud-native applications. Compliant HTTP/1 service should reject malformed request lines. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, There is a possibility that non compliant HTTP/1 service may allow malformed requests, potentially leading to a bypass of security policies. This issue is fixed in versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2023-27491US | critical9.1 | — | ||
Envoy is an open source edge and service proxy designed for cloud-native applications. Compliant HTTP/1 service should reject malformed request lines. Prior to versions 1.26.0, 1.2… | ||||
02
references
External citations — patches, advisories, analysis.
- https://datatracker.ietf.org/doc/html/rfc9113#section-8.3WEB
- https://datatracker.ietf.org/doc/html/rfc9114#section-4.3.1WEB
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-5jmv-cw9p-f9rpADVISORY
- https://nvd.nist.gov/vuln/detail/CVE-2023-27491WEB
- https://www.rfc-editor.org/rfc/rfc9110#section-5.6.2WEB
scry
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