CVE-2023-27488 — Improper Input Validation in Envoy

CWE-20 — Improper Input Validation2 documents2 sources
Severity
9.8CRITICALNVD
EPSS
0.0%
top 93.38%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Envoyproxy Envoy
Timeline
PublishedApr 4

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, escalation of privileges is possible when `failure_mode_allow: true` is configured for `ext_authz` filter. For affected components that are used for logging and/or visibility, requests may not be logged by the receiving service. When Envoy was configured to use ext_authz, ext_proc, tap, ratelimit filters, and grpc access log service and an http hea…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages2 packages

▶NVDenvoyproxy/envoy1.23.0 — 1.23.6+3
▶CVEListV5envoyproxy/envoy>= 1.23.0, < 1.23.6, >= 1.24.0, < 1.24.4, >= 1.25.0, <1.25.3+2

📋Vendor Advisories

1
Red Hat
envoy: gRPC client produces invalid protobuf when an HTTP header with non-UTF8 value is received↗2023-04-04
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CVE-2023-27488 — Improper Input Validation in Envoy | cvebase