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Fencer Intel
high 7.5

CVE-2019-12423 json

Private key leak in Apache CXF

published 6y ago modified 4mo ago also GHSA-42f2-f9vc-6365 , EUVD-2020-0406

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.1%
EPSS 6.1% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

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.

Patch / fix

  • maven org.apache.cxf:apache-cxf 3.2.12, 3.3.5
  • maven org.apache.cxf:cxf 3.2.12, 3.3.5
  • apache cxf 3.2.12, 3.3.5
  • eap7-txw2 jboss enterprise application platform 7.3 2.3.3-4.b02_redhat_00001.1.el7eap
  • eap7-xsom jboss enterprise application platform 7.3 2.3.3-4.b02_redhat_00001.1.el7eap
  • eap7-rngom jboss enterprise application platform 7.3 2.3.3-4.b02_redhat_00001.1.el7eap
  • eap7-wss4j jboss enterprise application platform 7.3, jboss enterprise application platform 7.2 2.2.5-1.redhat_00001.1.el7eap
  • eap7-jandex jboss enterprise application platform 7.3 2.1.2-1.Final_redhat_00001.1.el7eap
  • eap7-jasypt jboss enterprise application platform 7.3, jboss enterprise application platform 7.2 1.9.3-1.redhat_00001.1.el7eap
  • eap7-wildfly jboss enterprise application platform 7.3 7.3.1-5.GA_redhat_00003.1.el7eap
  • eap7-jaxb-jxc jboss enterprise application platform 7.3 2.3.3-4.b02_redhat_00001.1.el7eap

red hat advisories RHSA-2020:2512RHSA-2020:2511RHSA-2020:2513RHSA-2020:2060RHSA-2020:2059RHSA-2020:2058

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-12423 updated cvss 7.5

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

  • Red Hat BPM Suite 6 cxf, cxf-core Red Hat JBoss BRMS 6 cxf Red Hat JBoss Fuse 6 cxf-core
    affected: no fix planned “Out of support scope”
  • Red Hat OpenShift Application Runtimes cxf-core
    affected: no fix available
  • Red Hat support for Spring Boot cxf-core
    affected: no fix planned “Will not fix”
  • Red Hat EAP-CD 19 Tech Preview
    fixed: vendor fix RHSA-2020:2333
  • Red Hat Decision Manager 7
    fixed: vendor fix RHSA-2020:3196
  • Red Hat Fuse 7.8.0
    fixed: vendor fix RHSA-2020:5568
  • Red Hat JBoss EAP 7.2
    fixed: vendor fix RHSA-2020:2061
  • Red Hat JBoss EAP 7.2 for RHEL 6 Server eap7-wss4j 2.2.5-1.redhat_00001.1.el6eap, eap7-jasypt 1.9.3-1.redhat_00001.1.el6eap, eap7-opensaml 3.3.1-1.redhat_00002.1.el6eap, eap7-wildfly 7.2.8-3.GA_redhat_00002.1.el6eap, eap7-apache-cxf 3.2.12-1.redhat_00001.1.el6eap, eap7-cryptacular 1.2.4-1.redhat_00001.1.el6eap, +152 more
    fixed: vendor fix RHSA-2020:2058
show 9 more
  • Red Hat JBoss EAP 7.2 for RHEL 7 Server eap7-wss4j 2.2.5-1.redhat_00001.1.el7eap, eap7-jasypt 1.9.3-1.redhat_00001.1.el7eap, eap7-opensaml 3.3.1-1.redhat_00002.1.el7eap, eap7-wildfly 7.2.8-3.GA_redhat_00002.1.el7eap, eap7-apache-cxf 3.2.12-1.redhat_00001.1.el7eap, eap7-cryptacular 1.2.4-1.redhat_00001.1.el7eap, +154 more
    fixed: vendor fix RHSA-2020:2059
  • Red Hat JBoss EAP 7.2 for RHEL 8 eap7-wss4j 2.2.5-1.redhat_00001.1.el8eap, eap7-jasypt 1.9.3-1.redhat_00001.1.el8eap, eap7-opensaml 3.3.1-1.redhat_00002.1.el8eap, eap7-wildfly 7.2.8-3.GA_redhat_00002.1.el8eap, eap7-apache-cxf 3.2.12-1.redhat_00001.1.el8eap, eap7-cryptacular 1.2.4-1.redhat_00001.1.el8eap, +152 more
    fixed: vendor fix RHSA-2020:2060
  • Red Hat JBoss EAP 7.3 for BaseOS-8 eap7-wss4j 2.2.5-1.redhat_00001.1.el8eap, eap7-jasypt 1.9.3-1.redhat_00001.1.el8eap, eap7-opensaml 3.3.1-1.redhat_00002.1.el8eap, eap7-txw2 2.3.3-4.b02_redhat_00001.1.el8eap, eap7-xsom 2.3.3-4.b02_redhat_00001.1.el8eap, eap7-rngom 2.3.3-4.b02_redhat_00001.1.el8eap, +194 more
    fixed: vendor fix RHSA-2020:2513
  • Red Hat JBoss EAP 7.3 for RHEL 6 Server eap7-wss4j 2.2.5-1.redhat_00001.1.el6eap, eap7-jasypt 1.9.3-1.redhat_00001.1.el6eap, eap7-opensaml 3.3.1-1.redhat_00002.1.el6eap, eap7-txw2 2.3.3-4.b02_redhat_00001.1.el6eap, eap7-xsom 2.3.3-4.b02_redhat_00001.1.el6eap, eap7-rngom 2.3.3-4.b02_redhat_00001.1.el6eap, +194 more
    fixed: vendor fix RHSA-2020:2511
  • Red Hat JBoss EAP 7.3 for RHEL 7 Server eap7-wss4j 2.2.5-1.redhat_00001.1.el7eap, eap7-jasypt 1.9.3-1.redhat_00001.1.el7eap, eap7-opensaml 3.3.1-1.redhat_00002.1.el7eap, eap7-txw2 2.3.3-4.b02_redhat_00001.1.el7eap, eap7-xsom 2.3.3-4.b02_redhat_00001.1.el7eap, eap7-rngom 2.3.3-4.b02_redhat_00001.1.el7eap, +196 more
    fixed: vendor fix RHSA-2020:2512
  • Red Hat JBoss Enterprise Application Platform 7
    fixed: vendor fix RHSA-2020:2515
  • Red Hat Process Automation 7
    fixed: vendor fix RHSA-2020:3197
  • Red Hat Text-Only RHOAR
    fixed: vendor fix RHSA-2020:2905
  • Red Hat Logging Subsystem for Red Hat OpenShift openshift-logging/elasticsearch6-rhel8 Red Hat JBoss Data Virtualization 6 cxf-core Red Hat Single Sign-On 7 cxf-core
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

6.06% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
maven org.apache.cxf:apache-cxf
<3.2.12
>=3.3.0, <3.3.5
3.2.12
3.3.5
maven org.apache.cxf:cxf
<3.2.12
>=3.3.0, <3.3.5
3.2.12
3.3.5

Affected products

  • Apache CXF

Classification

Weakness
  • CWE-522 Insufficiently Protected Credentials

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.