vulnerability
Red Hat: CVE-2018-20217: krb5: Reachable assertion in the KDC using S4U2Self requests
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:M/Au:S/C:N/I:N/A:P) | Dec 26, 2018 | Jul 9, 2025 | Jul 9, 2025 |
Severity
4
CVSS
(AV:N/AC:M/Au:S/C:N/I:N/A:P)
Published
Dec 26, 2018
Added
Jul 9, 2025
Modified
Jul 9, 2025
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.
Solution
no-fix-redhat-rpm-package
References
NEW
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.