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.
https://access.redhat.com/errata/RHSA-2017:0873
https://access.redhat.com/errata/RHSA-2017:0872
http://www.securitytracker.com/id/1038180
http://www.securityfocus.com/bid/97393
http://rhn.redhat.com/errata/RHSA-2017-0876.html
https://bugzilla.redhat.com/show_bug.cgi?id=1412376
Source: Mitre, NVD
Published: 2018-03-12
Updated: 2024-11-21
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N
Severity: Medium
Base Score: 5.9
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS: 0.00607