CVE-2018-20217

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.

References

https://security.netapp.com/advisory/ntap-20190416-0006/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2KNHELH4YHNT6H2ESJWX2UIDXLBNGB2O/

https://lists.debian.org/debian-lts-announce/2021/09/msg00019.html

https://lists.debian.org/debian-lts-announce/2019/01/msg00020.html

https://github.com/krb5/krb5/commit/5e6d1796106df8ba6bc1973ee0917c170d929086

http://krbdev.mit.edu/rt/Ticket/Display.html?id=8763

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3