Auth bypass in Red Hat Keycloak
CVE-2019-10157
It was found that Keycloak's Node.js adapter before version 4.8.3 did not properly verify the web token received from the server in its backchannel logout . An attacker with local access could use this to construct a malicious web token setting an NBF parameter that could prevent user access indefinitely.
EPSS: 0.002 (11.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Red Hat Keycloak — versions 4.8.3
- Redhat Keycloak
- Redhat Single_sign-on
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_CONFIRM, Issue Tracking, Vendor Advisory)
- secalert@redhat.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
Frequently asked questions
- What is CVE-2019-10157?
- CVE-2019-10157 is a medium-severity vulnerability in Red Hat Keycloak, classified under Insufficient Verification of Data Authenticity. CVSS score: 4.7/10. Published 2019-06-12.
- How severe is CVE-2019-10157?
- Medium severity. CVSS v3 base score is 4.7 out of 10.