CVE-2018-20217
MEDIUMMIT Kerberos <1.17 - DoS
Title source: llmDescription
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.
Scores
CVSS v3
5.3
EPSS
0.0267
EPSS Percentile
85.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Classification
CWE
CWE-617
Status
published
Affected Products (3)
mit/kerberos
< 5-1.17
debian/debian_linux
debian/debian_linux
Timeline
Published
Dec 26, 2018
Tracked Since
Feb 18, 2026