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CVE-2018-20217

Public on 2018-12-26
Modified on 2020-06-03
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.

Severity
Medium
See what this means
CVSS v3 Base Score
5.3
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 1 krb5 2020-05-22 20:58 ALAS-2020-1374

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 5.3 CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD CVSSv3 5.3 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD CVSSv2 3.5 AV:N/AC:M/Au:S/C:N/I:N/A:P