CVE-2023-27491

critical

Description

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.

References

https://www.rfc-editor.org/rfc/rfc9110#section-5.6.2

https://datatracker.ietf.org/doc/html/rfc9114#section-4.3.1

https://datatracker.ietf.org/doc/html/rfc9113#section-8.3

Details

Source: Mitre, NVD

Published: 2023-04-04

Updated: 2023-04-11

Risk Information

CVSS v2

Base Score: 9.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 9.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Severity: Critical