CVE-2022-21656

mediumPriorität · verfolgen · 24EPSS 0.007 · 52. PerzentilEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.67% (52nd) EPSS

CVSS 5.8 · medium

Is it mine?

3 products

Prüfe deine Angriffsfläche

Who says so?

4 sources

cnnvd · enisa_euvd · osv · nvd

EPSS · bewertet 2026-10-27

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.

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

7.4

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 5.4–7.4

v2.05.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Nprimary · NVD / NIST USAusnutzbarkeit 8.6 · Auswirkung 4.9

v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USAusnutzbarkeit 2.2 · Auswirkung 3.6

v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · ENISA EU

v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · security-advisories@github.comAusnutzbarkeit 2.2 · Auswirkung 5.2

v3.15.4mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

SSVC

Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-843USprimärCWE-295US

betroffene Produkte (3)

Betroffene Produkte und Versionsbereiche.

envoyproxy envoy≤ < 1.20.2enisa_euvdEU
envoyproxy envoy< 1.20.2nvdUScpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
Bitnami envoy< 1.20.2osvUSpkg:bitnami/envoy

Advisories (1)

Hersteller- und Ökosystem-Meldungen dazu.

BIT-envoy-2022-21656X.509 subjectAltName matching bypass in Envoy2024-03-06vendor · osvUS
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.

auch bekannt als (3)

Weitere Namen und Kennungen dieser Entität.

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvd enisa_euvd osv nvd NVD CVE.org MITRE

veröffentlicht 2022-02-22geändert 2026-06-17

verwandt (1,199)

Verwandte Einträge.

ID	Schweregrad	EPSS	ausnutzbar	veröffentlicht
CVE-2026-85046US	—OT kritisch	1.81% (78th)	KEV	2026-09-03
Type confusion in V8 in Google Chrome prior to 152.0.7977.82 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security seve…
CVE-2026-21519US	—OT kritisch	2.48% (84th)	KEV	2026-02-10
Access of resource using incompatible type ('type confusion') in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
CVE-2025-13223US	—OT kritisch	4.90% (92nd)	KEV	2025-11-17
Type Confusion in V8 in Google Chrome prior to 142.0.7444.175 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity:…
CVE-2025-10585US	critical9.8OT kritisch	8.97% (95th)	KEV	2025-09-24
Type confusion in V8 in Google Chrome prior to 140.0.7339.185 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity:…
CVE-2025-6554US	—OT kritisch	14.1% (97th)	KEV	2025-06-30
Type confusion in V8 in Google Chrome prior to 138.0.7204.96 allowed a remote attacker to perform arbitrary read/write via a crafted HTML page. (Chromium security severity: High)

+1194 weitere

Referenzen (9)

Externe Belege — Patches, Meldungen, Analysen.

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