CVE-2018-20217
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
Product
Mit Kerberos
PublishedDec 26, 2018
First seenDec 26, 2018
How to fix
Update
- mit kerberos5-1.17 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mit kerberos | v < 5-1.17 | 5-1.17 |
| debian debian_linux | 8.0, 9.0 | — |
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