CVE-2020-1758
First published: Wed Mar 11 2020(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/rh-sso7-keycloak | <0:4.8.20-1.Final_redhat_00001.1.el6 | 0:4.8.20-1.Final_redhat_00001.1.el6 |
| redhat/rh-sso7-keycloak | <0:4.8.20-1.Final_redhat_00001.1.el7 | 0:4.8.20-1.Final_redhat_00001.1.el7 |
| redhat/rh-sso7-keycloak | <0:4.8.20-1.Final_redhat_00001.1.el8 | 0:4.8.20-1.Final_redhat_00001.1.el8 |
| Redhat Keycloak | <10.0.0 | |
| Redhat Openstack | =10 |
Remedy
Turn off all kinds of email notifications including password reset mails.
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1758
- https://issues.redhat.com/browse/KEYCLOAK-13285
- https://access.redhat.com/errata/RHSA-2020:2107
- https://access.redhat.com/errata/RHSA-2020:2106
- https://access.redhat.com/errata/RHSA-2020:2108
- https://access.redhat.com/errata/RHSA-2020:2112
- https://access.redhat.com/security/cve/cve-2020-1758
- https://bugzilla.redhat.com/show_bug.cgi?id=1812514
- https://www.cve.org/CVERecord?id=CVE-2020-1758 https://nvd.nist.gov/vuln/detail/CVE-2020-1758 https://issues.redhat.com/browse/KEYCLOAK-13285
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2020-1758.
What is the severity of CVE-2020-1758?
The severity of CVE-2020-1758 is medium with a CVSS score of 5.3.
What is affected by CVE-2020-1758?
Keycloak versions before 10.0.0 and rh-sso7-keycloak versions up to 4.8.20-1.Final_redhat_00001.1.el6, 4.8.20-1.Final_redhat_00001.1.el7, and 4.8.20-1.Final_redhat_00001.1.el8 are affected by CVE-2020-1758.
How does CVE-2020-1758 impact Keycloak?
CVE-2020-1758 allows an attacker to perform a man-in-the-middle (MITM) attack by exploiting the lack of TLS hostname verification in Keycloak when sending emails using the SMTP server.
Are there any references for CVE-2020-1758?
Yes, you can find more information about CVE-2020-1758 at the following references: - [Keycloak Issue](https://issues.redhat.com/browse/KEYCLOAK-13285) - [Red Hat Security Advisory RHSA-2020:2107](https://access.redhat.com/errata/RHSA-2020:2107) - [Red Hat Security Advisory RHSA-2020:2106](https://access.redhat.com/errata/RHSA-2020:2106)
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