CVE-2022-21656

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Summary

CVECVE-2022-21656
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-02-22 23:15:00 UTC
Updated2023-07-24 13:50:00 UTC
DescriptionEnvoy 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.

Risk And Classification

Problem Types: CWE-843

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Envoyproxy Envoy All All All All

References

ReferenceSourceLinkTags
Specify type for matching Subject Alternative Name. (#18628) · envoyproxy/envoy@bb95af8 · GitHub MISC github.com
X.509 subjectAltName matching (and nameConstraints) bypass · Advisory · envoyproxy/envoy · GitHub CONFIRM github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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