CVEvulnerability

CVE-2023-27496

7.5 HIGH Published 2023-04-04 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2023-04-04
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-20

Description

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, the OAuth filter assumes that a `state` query param is present on any response that looks like an OAuth redirect response. Sending it a request with the URI path equivalent to the redirect path, without the `state` parameter, will lead to abnormal termination of Envoy process. Versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9 contain a patch. The issue can also be mitigated by locking down OAuth traffic, disabling the filter, or by filtering traffic before it reaches the OAuth filter (e.g. via a lua script).

Affected configurations

• envoyproxy envoy (< 1.22.9) • envoyproxy envoy (>= 1.23.0 < 1.23.6) • envoyproxy envoy (>= 1.24.0 < 1.24.4) • envoyproxy envoy (>= 1.25.0 < 1.25.3)

Related

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References