CVE-2023-1664

mediumPriorität · verfolgen · 26EPSS 0.004 · 37. PerzentilDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.43% (37th) EPSS

CVSS 6.5 · medium

Is it mine?

17 products

Prüfe deine Angriffsfläche

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · bewertet 2026-10-27

A flaw was found in Keycloak. This flaw depends on a non-default configuration "Revalidate Client Certificate" to be enabled and the reverse proxy is not validating the certificate before Keycloak. Using this method an attacker may choose the certificate which will be validated by the server. If this happens and the KC_SPI_TRUSTSTORE_FILE_FILE variable is missing/misconfigured, any trustfile may be accepted with the logging information of "Cannot validate client certificate trust: Truststore not available". This may not impact availability as the attacker would have no access to the server, but consumer applications Integrity or Confidentiality may be impacted considering a possible access to them. Considering the environment is correctly set to use "Revalidate Client Certificate" this flaw is avoidable.

cvss

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

6.5

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:Nprimary · NVD / NIST USAusnutzbarkeit 3.9 · Auswirkung 2.5

v3.16.5mediumAV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:Nsecondary · FSTEC (BDU) RU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:Nsecondary · ENISA EU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NsecondaryAusnutzbarkeit 3.9 · Auswirkung 2.5

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:Nsecondary · OSV

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

SSVC

Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-295USprimärCWE-295USCWE-295US

betroffene Produkte (17)

Betroffene Produkte und Versionsbereiche.

Open Source Keycloakalle Versionencert_bundDEcpe:/a:keycloak:keycloak:-
Red Hat Enterprise Linuxalle Versionencert_bundDEcpe:/o:redhat:enterprise_linux:-
Red Hat Single Sign On 7alle Versionencert_bundDEcpe:/a:redhat:single_sign_on:7.x
n/a KeyCloak≤ NAenisa_euvdEU
Red Hat Inc. Keycloakalle Versionenfstec_bduRU
Red Hat Inc. Keycloak≤ 22.0.1fstec_bduRU
Red Hat Inc. Migration Toolkit for Runtimesalle Versionenfstec_bduRU
Red Hat Inc. Red Hat Enterprise Linux≤ 8 based Middleware Containersfstec_bduRU
Red Hat Inc. Red Hat JBoss A-MQ≤ 7fstec_bduRU
Red Hat Inc. Red Hat Single Sign-On≤ 7fstec_bduRU
Red Hat Inc. Red Hat Single Sign-On≤ 7.6fstec_bduRU
redhat build of quarkusalle VersionennvdUScpe:2.3:a:redhat:build_of_quarkus:*:*:*:*:*:*:*:*
redhat jboss a-mq= 7nvdUScpe:2.3:a:redhat:jboss_a-mq:*:*:*:*:*:*:*:*
redhat keycloakalle VersionennvdUScpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*
redhat migration toolkit for runtimesalle VersionennvdUScpe:2.3:a:redhat:migration_toolkit_for_runtimes:*:*:*:*:*:*:*:*
redhat single sign-on= 7.0nvdUScpe:2.3:a:redhat:single_sign-on:*:*:*:*:*:*:*:*
Maven org.keycloak:keycloak-core< 21.1.2osvUSpkg:maven/org.keycloak/keycloak-core

Advisories (2)

Hersteller- und Ökosystem-Meldungen dazu.

WID-SEC-W-2023-0764Keycloak: Schwachstelle ermöglicht Umgehen von SicherheitsvorkehrungenDeutsch2023-03-27csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Keycloak und Red Hat Single Sign On ausnutzen, um Sicherheitsvorkehrungen zu umgehen.
GHSA-5cc8-pgp5-7mpmKeycloak Untrusted Certificate Validation vulnerability2023-06-30ghsa · osvUS
A flaw was found in keycloak-core. This flaw considers the scenario when using X509 Client Certificate Authenticatior with the option "Revalidate Client Certificate". A user may be able to choose, if directly connect to keycloak (not passing via reverse proxy) a specific certificate. If there's a configuration error in KC_SPI_TRUSTSTORE_FILE_FILE the authenticator allows even with the "Cannot validate client certificate trust: Truststore not available" message as there's no certificate to trust against.

auch bekannt als (4)

Weitere Namen und Kennungen dieser Entität.

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvd enisa_euvd fstec_bdu cert_bund nvd osv NVD CVE.org MITRE

veröffentlicht 2023-05-26geändert 2026-06-17

verwandt (1,894)

Verwandte Einträge.

ID	Schweregrad	EPSS	ausnutzbar	veröffentlicht
CVE-2026-85102US	—OT kritisch	54.1% (99th)	KEV	2026-09-09
Improper certificate trust validation during VPN negotiation in Check Point Quantum Security Gateway may allow an unauthenticated remote attacker to execute arbitrary code on the G…
CVE-2023-41991US	medium5.5OT kritisch	13.4% (96th)	KEV	2023-09-21
A certificate validation issue was addressed. This issue is fixed in macOS Ventura 13.6, iOS 16.7 and iPadOS 16.7. A malicious app may be able to bypass signature validation. Apple…
CVE-2023-20963US	high7.8OT kritisch	1.47% (74th)	KEV	2023-03-24
In WorkSource, there is a possible parcel mismatch. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed…
CVE-2022-26923US	high9.0OT kritisch	83.5% (100th)	KEV	2022-05-10
Active Directory Domain Services Elevation of Privilege Vulnerability
CVE-2022-20703US	high8.0OT kritisch	9.20% (95th)	KEV	2022-02-10
Multiple vulnerabilities in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute arbitrary code Elevate pr…

+1889 weitere

Referenzen (6)

Externe Belege — Patches, Meldungen, Analysen.

scry

Angreifer nutzen Schwachstellen wie diese gegen im Internet exponierte Dienste aus. Sehen Sie mit einem kostenlosen Passiv-Scan, was exponiert ist.

Kostenloser Scan