Back to feed
EUVD-2018-12784 · Published Dec 26, 2018
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.
Technologies
Debian Debian LinuxMit Kerberos
Weaknesses
CWE-617
CVSS scores
- v3.15.3
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H - v2.03.5
AV:N/AC:M/Au:S/C:N/I:N/A:P
MITRE ATT&CK
InferredWhere this vulnerability fits in an attack
Initial Access
References
- http://krbdev.mit.edu/rt/Ticket/Display.html?id=8763
- https://github.com/krb5/krb5/commit/5e6d1796106df8ba6bc1973ee0917c170d929086
- https://lists.debian.org/debian-lts-announce/2019/01/msg00020.html
- https://lists.debian.org/debian-lts-announce/2021/09/msg00019.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2KNHELH4YHNT6H2ESJWX2UIDXLBNGB2O/
- https://security.netapp.com/advisory/ntap-20190416-0006/
Potentially impacted assets
See if this affects your attack surface
