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Fencer Vulns
medium 6.5

CVE-2017-2582 json

keycloak-core discloses system properties

published 2018-07-26 8 y ago modified 2026-06-17 4 mo ago also GHSA-c77r-6f64-478q , EUVD-2018-0568

cvss
6.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.4%
EPSS 2.4% chance of exploitation in 30 days, percentile 84%
public exploits
0
none known

Summary

It was found that while parsing the SAML messages the StaxParserUtil class of keycloak before 2.5.1 replaces special strings for obtaining attribute values with system property. This could allow an attacker to determine values of system properties at the attacked system by formatting the SAML request ID field to be the chosen system property which could be obtained in the "InResponseTo" field in the response.

Patch / fix

  • maven org.keycloak:keycloak-core 2.5.1
  • redhat keycloak 2.5.1
  • hornetq jboss enterprise application platform 6 2.3.25-27.SP28_redhat_1.1.ep6.el7
  • jbossweb jboss enterprise application platform 6 7.5.29-1.Final_redhat_1.1.ep6.el7
  • jboss-vfs2 jboss enterprise application platform 6 3.2.13-1.Final_redhat_1.1.ep6.el7
  • jboss-as-ee jboss enterprise application platform 6 7.5.21-1.Final_redhat_1.1.ep6.el7
  • jboss-as-cli jboss enterprise application platform 6 7.5.21-1.Final_redhat_1.1.ep6.el7
  • jboss-as-cmp jboss enterprise application platform 6 7.5.21-1.Final_redhat_1.1.ep6.el7
  • jboss-as-jdr jboss enterprise application platform 6 7.5.21-1.Final_redhat_1.1.ep6.el7
  • jboss-as-jmx jboss enterprise application platform 6 7.5.21-1.Final_redhat_1.1.ep6.el7

red hat advisories RHSA-2018:2741RHSA-2018:2743RHSA-2018:2742RHSA-2019:0137RHSA-2019:0136RHSA-2017:3219

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-2017-2582 updated cvss 6.5

keycloak: SAML request parser replaces special strings with system properties

  • Red Hat JBoss Enterprise Application Platform 6 picketlink-idm-impl
    affected: no fix planned “Out of support scope”
  • Red Hat JBoss Portal 6 picketlink-impl, picketlink-idm-impl
    affected: no fix planned “Will not fix”
  • Red Hat JBoss EAP 7.0
    fixed: vendor fix RHSA-2017:2810
  • Red Hat JBoss EAP 7.2
    fixed: vendor fix RHSA-2019:0139
  • Red Hat JBoss EAP 7.2 for RHEL 6 Server eap7 1-13.el6eap, eap7-runtime 1-13.el6eap, eap7-ecj 4.6.1-3.redhat_1.1.el6eap, eap7-vdx 1.1.6-2.redhat_1.1.el6eap, eap7-avro 1.7.6-7.redhat_2.1.el6eap, eap7-gson 2.8.2-1.redhat_5.1.el6eap, +423 more
    fixed: vendor fix RHSA-2019:0136
  • Red Hat JBoss EAP 7.2 for RHEL 7 Server eap7 1-13.el7eap, eap7-runtime 1-13.el7eap, eap7-ecj 4.6.1-3.redhat_1.1.el7eap, eap7-vdx 1.1.6-2.redhat_1.1.el7eap, eap7-avro 1.7.6-7.redhat_2.1.el7eap, eap7-gson 2.8.2-1.redhat_5.1.el7eap, +423 more
    fixed: vendor fix RHSA-2019:0137
  • Red Hat JBoss Enterprise Application Platform 6.4
    fixed: vendor fix RHSA-2017:3220
  • Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 5 Server hornetq 2.3.25-24.SP22_redhat_1.1.ep6.el5, hornetq 2.3.25-27.SP28_redhat_1.1.ep6.el5, jbossweb 7.5.26-1.Final_redhat_1.1.ep6.el5, jbossweb 7.5.29-1.Final_redhat_1.1.ep6.el5, resteasy 2.3.22-1.Final_redhat_1.1.ep6.el5, xerces-j2-eap6 2.9.1-19.redhat_8.1.ep6.el5, +153 more
    fixed: vendor fix RHSA-2018:2742
show 5 more
  • Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6 Server hornetq 2.3.25-24.SP22_redhat_1.1.ep6.el6, hornetq 2.3.25-27.SP28_redhat_1.1.ep6.el6, jbossweb 7.5.26-1.Final_redhat_1.1.ep6.el6, jbossweb 7.5.29-1.Final_redhat_1.1.ep6.el6, resteasy 2.3.22-1.Final_redhat_1.1.ep6.el6, xerces-j2-eap6 2.9.1-19.redhat_8.1.ep6.el6, +155 more
    fixed: vendor fix RHSA-2018:2743
  • Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 7 Server hornetq 2.3.25-24.SP22_redhat_1.1.ep6.el7, hornetq 2.3.25-27.SP28_redhat_1.1.ep6.el7, jbossweb 7.5.26-1.Final_redhat_1.1.ep6.el7, jbossweb 7.5.29-1.Final_redhat_1.1.ep6.el7, resteasy 2.3.22-1.Final_redhat_1.1.ep6.el7, xerces-j2-eap6 2.9.1-19.redhat_8.1.ep6.el7, +153 more
    fixed: vendor fix RHSA-2018:2741
  • Red Hat JBoss Enterprise Application Platform 7.0 for RHEL 6 Server eap7-jasypt 1.9.2-2.redhat_1.1.ep7.el6, eap7-wildfly 7.0.8-4.GA_redhat_1.1.ep7.el6, eap7-artemis-native 1.1.0-13.redhat_4.ep7.el6, eap7-bouncycastle 1.56.0-3.redhat_2.2.ep7.el6, eap7-jboss-ec2-eap 7.0.8-1.GA_redhat_1.ep7.el6, eap7-undertow 1.3.31-1.Final_redhat_1.1.ep7.el6, +30 more
    fixed: vendor fix RHSA-2017:2809
  • Red Hat JBoss Enterprise Application Platform 7.0 for RHEL 7 Server eap7-jasypt 1.9.2-2.redhat_1.1.ep7.el7, eap7-wildfly 7.0.8-4.GA_redhat_1.1.ep7.el7, eap7-artemis-native 1.1.0-13.redhat_4.ep7.el7, eap7-bouncycastle 1.56.0-3.redhat_2.2.ep7.el7, eap7-jboss-ec2-eap 7.0.8-1.GA_redhat_1.ep7.el7, eap7-undertow 1.3.31-1.Final_redhat_1.1.ep7.el7, +30 more
    fixed: vendor fix RHSA-2017:2811
  • Red Hat BPM Suite 6 picketlink-idm-core picketlink-idm-core Red Hat JBoss BRMS 6 picketlink-idm-core picketlink-idm-core Red Hat JBoss Data Grid 6 picketlink-impl, picketlink-idm-impl Red Hat JBoss Enterprise Application Platform 7 picketlink-idm-impl Red Hat JBoss Fuse 6 switchyard switchyard Red Hat JBoss Operations Network 3 picketlink-impl, picketlink-idm-impl
    +2 more products
    Red Hat Mobile Application Platform 4 keycloak-core Red Hat Single Sign-On 7 picketlink-impl, keycloak-saml-core, picketlink-idm-impl, rh-sso7-keycloak rh-sso7-keycloak
    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

2.43% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:P/I:N/A:N
GitHub 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
maven org.keycloak:keycloak-core
<2.5.1
2.5.1

Affected products

  • Red Hat keycloak

Classification

Weakness
  • CWE-201 Insertion of Sensitive Information Into Sent Data
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Vulns 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.