GitHub Advisoryadvisory · Go

GHSA-2wmf-p7f8-w42h EnvoyProxy Envoy Missing HTTP URL path normalization

CRITICAL Published 2022-05-24 Modified 2023-08-24 Official page ↗
Aliases
CVE-2019-9901
Ecosystem
Go
Packages
github.com/envoyproxy/envoy
Severity
Critical
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weaknesses
CWE-706
Reviewed
2023-07-14

Affected packages

• Go github.com/envoyproxy/envoy: < 1.9.1 → fixed in 1.9.1

Description

Envoy 1.9.0 and before does not normalize HTTP URL paths. A remote attacker may craft a relative path, e.g., `something/../admin`, to bypass access control, e.g., a block on `/admin`. A backend server could then interpret the non-normalized path and provide an attacker access beyond the scope provided for by the access control policy.

Related

Alias · CVE (1)

  • CVE-2019-9901 Envoy 1.9.0 and before does not normalize HTTP URL paths. vulnerability

Weakness · CWE (1)

  • CWE-706 Use of Incorrectly-Resolved Name or Reference weakness

References