CVE-2023-6563GHSA-54F3-C6HG-865H
Keycloak: offline session token dos
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 21.0.0
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- rh-sso7-keycloak
Version range not reported
- rh-sso7-keycloak
Version range not reported
- rh-sso7-keycloak
Version range not reported
- rh-sso-7/sso76-openshift-rhel8
Version range not reported
- rh-sso-7/sso7-rhel8-operator-bundle
Version range not reported
- rh-sso7-keycloak
Version range not reported
- keycloak-core
Version range not reported
- org.keycloak:keycloak-model-jpaMaven
fixed in 21.0.0