CVE-2024-23324 — Improper Input Validation in Envoy

CWE-20 — Improper Input Validation2 documents2 sources
Severity
7.5HIGHNVD
EPSS
0.0%
top 89.51%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Envoyproxy Envoy
Timeline
PublishedFeb 9

Description

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NExploitability: 3.9 | Impact: 3.6

Affected Packages2 packages

▶CVEListV5envoyproxy/envoy< 1.26.7+3
▶NVDenvoyproxy/envoy1.26.0 — 1.26.7+3

Patches

Patch: github.com ↗Patch: github.com ↗

📋Vendor Advisories

1
Red Hat
envoy: Ext auth can be bypassed when Proxy protocol filter sets invalid UTF-8 metadata↗2024-02-09
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