CVE-2024-23324 HIGH

CVE-2024-23324: Envoy ext auth can be bypassed when Proxy protocol filter sets invalid UTF-8 metadata

Vendor Envoyproxy
Product envoy
Weakness CWE-20 · Input validation
Published February 9, 2024
Last update August 19, 2024
View on NVD All CVEs

CVSS base score

8.6/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

What the vulnerability does

01Description

Envoy is a high-performance edge/middle/service proxy. External authentication can be bypassed by downstream connections. Downstream clients can force invalid gRPC requests to be sent to ext_authz, circumventing ext_authz checks when failure_mode_allow is set to true. This issue has been addressed in released 1.29.1, 1.28.1, 1.27.3, and 1.26.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Key dates

02Disclosure timeline

February 9, 2024 CVE published
August 19, 2024 Record updated