CVE-2022-21656
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-21656
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-21656.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2022-21656
- Aliases
-
- BIT-envoy-2022-21656
- GHSA-c9g7-xwcv-pjx2
- Published
- 2022-02-22T23:15:11Z
- Modified
- 2024-10-12T09:07:46.370723Z
- 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
- Summary
- [none]
- 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.
- References