What’s Vulnerable › Vulnerabilities

CVE-2017-2582

• Severity: medium (CVSS 6.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-07-26 · updated 2026-06-17
• Weakness: CWE-201

Description

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.

Affected products

• Red Hat JBoss EAP: 6.0.0, 6.4.0, 7.0.0, 7.1.0
• Keycloak: before 2.5.1 — fixed in 2.5.1

How to fix

Upgrade to a fixed version: Keycloak 2.5.1. Check the vendor advisory for mitigations.

References

• http://www.securityfocus.com/bid/101046
• http://www.securitytracker.com/id/1041707
• https://access.redhat.com/errata/RHSA-2017:2808
• https://access.redhat.com/errata/RHSA-2017:2809
• https://access.redhat.com/errata/RHSA-2017:2810
• https://access.redhat.com/errata/RHSA-2017:2811
• https://access.redhat.com/errata/RHSA-2017:3216
• https://access.redhat.com/errata/RHSA-2017:3217
• https://access.redhat.com/errata/RHSA-2017:3218
• https://access.redhat.com/errata/RHSA-2017:3219
• https://access.redhat.com/errata/RHSA-2017:3220
• https://access.redhat.com/errata/RHSA-2018:2740

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