Vulnerability in Red Hat Keycloak
CVE-2020-1758
A flaw was found in Keycloak in versions before 10.0.0, where it does not perform the TLS hostname verification while sending emails using the SMTP server. This flaw allows an attacker to perform a man-in-the-middle (MITM) attack.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.009 (59.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: +0.000
Affected products
- Red Hat Keycloak — versions keycloak versions before 10.0.0
- Red Hat Keycloak
- Red Hat OpenStack — versions 10
Weakness classification (CWE)
References
- bugzilla.redhat.com/show_bug.cgi (Issue Tracking, Vendor Advisory)
- issues.redhat.com/browse/KEYCLOAK-13285 (Permissions Required, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-1758?
- CVE-2020-1758 is a medium-severity vulnerability in Red Hat Keycloak, classified under Improper Validation of Certificate with Host Mismatch. CVSS score: 5.3/10. Published 2020-05-15.
- How severe is CVE-2020-1758?
- Medium severity. CVSS v3 base score is 5.3 out of 10.