What’s Vulnerable › Vulnerabilities

CVE-2017-2585

• Severity: medium (CVSS 5.9 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-03-12 · updated 2026-06-17
• Weakness: CWE-200

Description

Red Hat Keycloak before version 2.5.1 has an implementation of HMAC verification for JWS tokens that uses a method that runs in non-constant time, potentially leaving the application vulnerable to timing attacks.

Affected products

• Keycloak: before 2.5.1 — fixed in 2.5.1
• RedHat Single Sign On: 7.1, 7.2

How to fix

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

References

• http://rhn.redhat.com/errata/RHSA-2017-0876.html
• http://www.securityfocus.com/bid/97393
• http://www.securitytracker.com/id/1038180
• https://access.redhat.com/errata/RHSA-2017:0872
• https://access.redhat.com/errata/RHSA-2017:0873
• https://bugzilla.redhat.com/show_bug.cgi?id=1412376
• http://rhn.redhat.com/errata/RHSA-2017-0876.html
• http://www.securityfocus.com/bid/97393
• http://www.securitytracker.com/id/1038180
• https://access.redhat.com/errata/RHSA-2017:0872
• https://access.redhat.com/errata/RHSA-2017:0873
• https://bugzilla.redhat.com/show_bug.cgi?id=1412376

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