CVE-2023-6563
Severity
7.7HIGH
EPSS
0.5%
top 32.40%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedDec 14
Description
An unconstrained memory consumption vulnerability was discovered in Keycloak. It can be triggered in environments which have millions of offline tokens (> 500,000 users with each having at least 2 saved sessions). If an attacker creates two or more user sessions and then open the "consents" tab of the admin User Interface, the UI attempts to load a huge number of offline client sessions leading to excessive memory and CPU consumption which could potentially crash the entire system.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:HExploitability: 3.1 | Impact: 4.0
Affected Packages3 packages
Also affects: Openshift Container Platform 4.11, 4.12, 4.10, 4.9