Envoy ext auth can be bypassed when Proxy protocol filter sets invalid UTF-8 metadata (envoyproxy envoy)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.60 % · percentile 49 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD status
- Modified
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.
Weaknesses (CWE)
- CWE-20 — Improper Input Validation
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N | GitHub_M |
| CVSS 3.1 | HIGH 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N | NVD · security-advisories@github.com (Secondary) |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2024-20839
- GCVE · GCVE-0-2024-23324
CERT-FR advisories
- CERTFR-2024-AVI-0156 — Multiples vulnérabilités dans les produits Tenable · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*≥ 1.26.0 < 1.26.7cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*≥ 1.27.0 < 1.27.3cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*≥ 1.28.0 < 1.28.1cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*≥ 1.29.0 < 1.29.1
Affected products
| Product | Versions |
|---|---|
| envoyproxy · envoy | affected >= 1.29.0, < 1.29.1 ; affected >= 1.28.0, < 1.28.1 ; affected >= 1.27.0, < 1.27.3 ; affected < 1.26.7 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |