CVE-2023-27492
Envoy may crash when a large request body is processed in Lua filter
MEDIUM 4.8
At a glance
- Source
- NVD
- EPSS
- EPSS 0.69 % · percentile 52 ()
- 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. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, the Lua filter is vulnerable to denial of service. Attackers can send large request bodies for routes that have Lua filter enabled and trigger crashes. As of versions versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, Envoy no longer invokes the Lua coroutine if the filter has been reset. As a workaround for those whose Lua filter is buffering all requests/ responses, mitigate by using the buffer filter to avoid triggering the local reply in the Lua filter.
Weaknesses (CWE)
- CWE-770 — Allocation of Resources Without Limits or Throttling
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 4.8 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H | GitHub_M |
| CVSS 3.1 | MEDIUM 4.8 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H | NVD · security-advisories@github.com (Secondary) |
| CVSS 3.1 | MEDIUM 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2023-31257
- GCVE · GCVE-0-2023-27492
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 |