Description
The validate_as_request function in kdc_util.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.13.6 and 1.4.x before 1.14.3, when restrict_anonymous_to_tgt is enabled, uses an incorrect client data structure, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via an S4U2Self request.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- https://github.com/krb5/krb5/commit/93b4a6306a0026cf1cc31ac4bd8a49ba5d034ba7 ↗
- http://www.securityfocus.com/bid/92132 ↗
- https://lists.debian.org/debian-lts-announce/2018/01/msg00040.html ↗
- http://lists.opensuse.org/opensuse-updates/2016-09/msg00035.html ↗
- http://krbdev.mit.edu/rt/Ticket/Display.html?id=8458 ↗
- http://www.securitytracker.com/id/1036442 ↗
- http://web.mit.edu/kerberos/krb5-1.13/ ↗
- http://rhn.redhat.com/errata/RHSA-2016-2591.html ↗
- http://web.mit.edu/kerberos/krb5-1.14/ ↗
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AWL3KYFRJIX37EAM4DKCQQIQP2WBKL35/ ↗