CVE-2023-27491
Envoy forwards invalid Http2/Http3 downstream headers
MEDIUM 5.4
At a glance
- Source
- NVD
- EPSS
- EPSS 0.87 % · percentile 59 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD status
- Modified
Description
Envoy is an open source edge and service proxy designed for cloud-native applications. Compliant HTTP/1 service should reject malformed request lines. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, There is a possibility that non compliant HTTP/1 service may allow malformed requests, potentially leading to a bypass of security policies. This issue is fixed in versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9.
Weaknesses (CWE)
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N | GitHub_M |
| CVSS 3.1 | MEDIUM 5.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N | NVD · security-advisories@github.com (Secondary) |
| CVSS 3.1 | CRITICAL 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2023-31256
- GCVE · GCVE-0-2023-27491
Affected configurations (NVD CPE)
cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*< 1.22.9cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*≥ 1.23.0 < 1.23.6cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*≥ 1.24.0 < 1.24.4cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*≥ 1.25.0 < 1.25.3
Affected products
| Product | Versions |
|---|---|
| envoyproxy · envoy | affected >= 1.25.0, < 1.25.3 ; affected >= 1.24.0, < 1.24.4 ; affected >= 1.23.0, < 1.23.6 ; affected < 1.22.9 |
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 |
| 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 |