CVE-2018-20217

MediumCVSS 5.3/10Last modified Jun 17, 2026

Description

A Reachable Assertion issue was discovered in the KDC in MIT Kerberos 5 (aka krb5) before 1.17. If an attacker can obtain a krbtgt ticket using an older encryption type (single-DES, triple-DES, or RC4), the attacker can crash the KDC by making an S4U2Self request.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-617

Affected software

No affected versions have been published.

Timeline

Published
Dec 26, 2018
Last modified
Jun 17, 2026
NVD status
Modified

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