CVE-2022-21656

Katalog CVE

CVSS 5.9 · Medium EPSS 0,67%

Kerentanan Improper Certificate Validation pada envoyproxy envoy. Skor CVSS 3.1 5.9 (Medium) menurut NVD.

Deskripsi (NVD)

Envoy is an open source edge and service proxy, designed for cloud-native applications. The default_validator.cc implementation used to implement the default certificate validation routines has a "type confusion" bug when processing subjectAltNames. This processing allows, for example, an rfc822Name or uniformResourceIndicator to be authenticated as a domain name. This confusion allows for the bypassing of nameConstraints, as processed by the underlying OpenSSL/BoringSSL implementation, exposing the possibility of impersonation of arbitrary servers. As a result Envoy will trust upstream certificates that should not be trusted.

Rincian

Terbit di NVD

22 Februari 2022

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

5.9 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-295: Improper Certificate Validation
CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')

EPSS (30 hari)

0,67% peluang dieksploitasi; lebih tinggi dari 50,7% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/envoyproxy/envoy/commit/bb95af848c939cfe5b5ee33c5b1770558077e64e patch · advisory pihak ketiga
• https://github.com/envoyproxy/envoy/security/advisories/GHSA-c9g7-xwcv-pjx2 issue tracking · advisory pihak ketiga