PT-2020-15039 · Red Hat · Keycloak

Published 2020-05-15 · Updated 2022-02-09 · CVE-2020-1758

Positive Technologies (AI Summary)

CVSS v3.1

5.9

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions Keycloak versions prior to 10.0.0

Description A flaw was found in Keycloak 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.

Recommendations For versions prior to 10.0.0, update to version 10.0.0 or later to resolve the issue. As a temporary workaround, consider restricting access to the SMTP server to minimize the risk of exploitation.

Fix

Improper Certificate Validation

Weakness Enumeration

CWE-297

CWE-295

Related Identifiers

CVE-2020-1758

GHSA-C597-F74M-JGC2

RHSA-2020:2106

RHSA-2020:2107

RHSA-2020:2108

Affected Products

Keycloak

References · 6

• https://issues.redhat.com/browse/KEYCLOAK-13285 · Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1758 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-c597-f74m-jgc2 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-1758 · Security Note
• https://osv.dev/vulnerability/CVE-2020-1758 · Vendor Advisory
• https://t.me/cvenotify/3856 · Telegram Post