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  5. CVE-2020-1758

CVE-2020-1758: Improper Certificate Validation

May 15, 2020 (updated May 19, 2020)

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.

References

  • bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1758
  • issues.redhat.com/browse/KEYCLOAK-13285
  • nvd.nist.gov/vuln/detail/CVE-2020-1758

Code Behaviors & Features

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Affected versions

All versions before 10.0.0

Fixed versions

  • 10.0.0

Solution

Upgrade to version 10.0.0 or above.

Impact 5.9 MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Learn more about CVSS

Weakness

  • CWE-295: Improper Certificate Validation

Source file

maven/org.keycloak/keycloak-services/CVE-2020-1758.yml

Spotted a mistake? Edit the file on GitLab.

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