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CVE-2022-21656

Published: 2022-02-22T23:15Z
Last Modified: 2024-11-21T06:45Z
Source: MITRE CVE List
License: MITRE-CVE-TOS
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. > MITRE Terms of Use apply – see LICENSE‑MITRE.txt