CVE-2019-12423

cxf: OpenId Connect token service does not properly validate the clientId

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Apache CXF ships with a OpenId Connect JWK Keys service, which allows a client to obtain the public keys in JWK format, which can then be used to verify the signature of tokens issued by the service. Typically, the service obtains the public key from a local keystore (JKS/PKCS12) by specifing the path of the keystore and the alias of the keystore entry. This case is not vulnerable. However it is also possible to obtain the keys from a JWK keystore file, by setting the configuration parameter "rs.security.keystore.type" to "jwk". For this case all keys are returned in this file "as is", including all private key and secret key credentials. This is an obvious security risk if the user has configured the signature keystore file with private or secret key credentials. From CXF 3.3.5 and 3.2.12, it is mandatory to specify an alias corresponding to the id of the key in the JWK file, and only this key is returned. In addition, any private key information is omitted by default. "oct" keys, which contain secret keys, are not returned at all.

Apache CXF entregado con un servicio OpenId Connect JWK Keys, que permite al cliente obtener las claves públicas en formato JWK, que luego pueden ser usadas para comprobar la firma de los tokens emitidos por parte del servicio. Normalmente, el servicio obtiene la clave pública de un almacén de claves local (JKS/PKCS12) mediante la especificación de la ruta del almacén de claves y el alias de la entrada del almacén de claves. Este caso no es vulnerable. Sin embargo, también es posible obtener las claves de un archivo del almacén de claves JWK, estableciendo el parámetro de configuración "rs.security.keystore.type" en "jwk". Para este caso, todas las claves son devueltas a este archivo "as is", incluyendo todas las credenciales de clave privada y clave secreta. Este es un riesgo de seguridad obvio si el usuario ha configurado el archivo de almacén de claves de firma con credenciales de clave privada o secreta. Desde CXF versiones 3.3.5 y 3.2.12, es obligatorio especificar un alias correspondiente al id de la clave en el archivo JWK, y solo esta clave es devuelta. Además, cualquier información de clave privada es omitida por defecto. Las claves "oct", que contienen claves secretas, no son devueltas en absoluto.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-05-28 CVE Reserved
2020-01-16 CVE Published
2023-12-23 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-522: Insufficiently Protected Credentials

CAPEC

References (12)

URL	Tag	Source
https://lists.apache.org/thread.html/r36e44ffc1a9b365327df62cdfaabe85b9a5637de102cea07d79b2dbf%40%3Ccommits.cxf.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/rd49aabd984ed540c8ff7916d4d79405f3fa311d2fdbcf9ed307839a6%40%3Ccommits.cxf.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/rd588ff96f18563aeb5f87ac8c6bce7aae86cb1a4d4be483f96e7208c%40%3Cannounce.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/rec7160382badd3ef4ad017a22f64a266c7188b9ba71394f0d321e2d4%40%3Ccommits.cxf.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/rfb87e0bf3995e7d560afeed750fac9329ff5f1ad49da365129b7f89e%40%3Ccommits.cxf.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/rff42cfa5e7d75b7c1af0e37589140a8f1999e578a75738740b244bd4%40%3Ccommits.cxf.apache.org%3E	Mailing List

URL	Date	SRC

URL	Date	SRC
https://www.oracle.com/security-alerts/cpuApr2021.html	2023-11-07
https://www.oracle.com/security-alerts/cpujul2020.html	2023-11-07
https://www.oracle.com/security-alerts/cpuoct2020.html	2023-11-07

URL	Date	SRC
http://cxf.apache.org/security-advisories.data/CVE-2019-12423.txt.asc?version=1&modificationDate=1579178393000&api=v2	2023-11-07
https://access.redhat.com/security/cve/CVE-2019-12423	2020-12-16
https://bugzilla.redhat.com/show_bug.cgi?id=1797006	2020-12-16

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apache Search vendor "Apache"		Cxf Search vendor "Apache" for product "Cxf"				< 3.2.12 Search vendor "Apache" for product "Cxf" and version " < 3.2.12"		-		Affected
Apache Search vendor "Apache"		Cxf Search vendor "Apache" for product "Cxf"				>= 3.3.0 < 3.3.5 Search vendor "Apache" for product "Cxf" and version " >= 3.3.0 < 3.3.5"		-		Affected
Oracle Search vendor "Oracle"		Commerce Guided Search Search vendor "Oracle" for product "Commerce Guided Search"				11.3.2 Search vendor "Oracle" for product "Commerce Guided Search" and version "11.3.2"		-		Affected
Oracle Search vendor "Oracle"		Communications Diameter Signaling Router Search vendor "Oracle" for product "Communications Diameter Signaling Router"				>= 8.0.0 <= 8.2.2 Search vendor "Oracle" for product "Communications Diameter Signaling Router" and version " >= 8.0.0 <= 8.2.2"		-		Affected
Oracle Search vendor "Oracle"		Communications Element Manager Search vendor "Oracle" for product "Communications Element Manager"				>= 8.2.0 <= 8.2.2 Search vendor "Oracle" for product "Communications Element Manager" and version " >= 8.2.0 <= 8.2.2"		-		Affected
Oracle Search vendor "Oracle"		Communications Session Report Manager Search vendor "Oracle" for product "Communications Session Report Manager"				>= 8.2.0 <= 8.2.2 Search vendor "Oracle" for product "Communications Session Report Manager" and version " >= 8.2.0 <= 8.2.2"		-		Affected
Oracle Search vendor "Oracle"		Communications Session Route Manager Search vendor "Oracle" for product "Communications Session Route Manager"				8.1.1 Search vendor "Oracle" for product "Communications Session Route Manager" and version "8.1.1"		-		Affected
Oracle Search vendor "Oracle"		Communications Session Route Manager Search vendor "Oracle" for product "Communications Session Route Manager"				8.2.0 Search vendor "Oracle" for product "Communications Session Route Manager" and version "8.2.0"		-		Affected
Oracle Search vendor "Oracle"		Communications Session Route Manager Search vendor "Oracle" for product "Communications Session Route Manager"				8.2.1 Search vendor "Oracle" for product "Communications Session Route Manager" and version "8.2.1"		-		Affected
Oracle Search vendor "Oracle"		Flexcube Private Banking Search vendor "Oracle" for product "Flexcube Private Banking"				12.0.0 Search vendor "Oracle" for product "Flexcube Private Banking" and version "12.0.0"		-		Affected
Oracle Search vendor "Oracle"		Flexcube Private Banking Search vendor "Oracle" for product "Flexcube Private Banking"				12.1.0 Search vendor "Oracle" for product "Flexcube Private Banking" and version "12.1.0"		-		Affected
Oracle Search vendor "Oracle"		Retail Order Broker Search vendor "Oracle" for product "Retail Order Broker"				15.0 Search vendor "Oracle" for product "Retail Order Broker" and version "15.0"		-		Affected