CVE-2016-3120

krb5: S4U2Self KDC crash when anon is restricted

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Severity

Low

Red Hat Product Security

5.3

CVSS 3.0

Review impact separately from score.

Published · July 19, 2016

Updated · August 5, 2026

Description

A NULL pointer dereference flaw was found in MIT Kerberos krb5kdc service. An authenticated attacker could use this flaw to cause krb5kdc to dereference a null pointer and crash by making an S4U2Self request, if the restrict_anonymous_to_tgt option was set to true.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 5.3
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS 2.0 · 3.5
AV:N/AC:M/Au:S/C:N/I:N/A:P

CWE-476 · NULL Pointer Dereference