BIT-envoy-2022-21656
See a problem?- Import Source
- https://github.com/bitnami/vulndb/tree/main/data/envoy/BIT-envoy-2022-21656.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/BIT-envoy-2022-21656
- Aliases
-
- CVE-2022-21656
- GHSA-c9g7-xwcv-pjx2
- Published
- 2024-03-06T10:56:05.460Z
- Modified
- 2025-10-08T05:13:11.434955Z
- Summary
- X.509 subjectAltName matching bypass in Envoy
- Details
-
Envoy is an open source edge and service proxy, designed for cloud-native applications. The default_validator.cc implementation used to implement the default certificate validation routines has a "type confusion" bug when processing subjectAltNames. This processing allows, for example, an rfc822Name or uniformResourceIndicator to be authenticated as a domain name. This confusion allows for the bypassing of nameConstraints, as processed by the underlying OpenSSL/BoringSSL implementation, exposing the possibility of impersonation of arbitrary servers. As a result Envoy will trust upstream certificates that should not be trusted.
- Database specific
{ "cpes": [ "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*" ], "severity": "Medium" }- References
Affected packages
Bitnami / envoy
Package
- Name
- envoy
- Purl
- pkg:bitnami/envoy
Severity
- 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator