CVE-2016-3120

6.5 MEDIUM
Published: August 01, 2016 Modified: May 06, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://krbdev.mit.edu/rt/Ticket/Display.html?id=8458
Source: cve@mitre.org
Issue Tracking
http://lists.opensuse.org/opensuse-updates/2016-09/msg00035.html
Source: cve@mitre.org
http://rhn.redhat.com/errata/RHSA-2016-2591.html
Source: cve@mitre.org
http://web.mit.edu/kerberos/krb5-1.13/
Source: cve@mitre.org
http://web.mit.edu/kerberos/krb5-1.14/
Source: cve@mitre.org
http://www.securityfocus.com/bid/92132
Source: cve@mitre.org
http://www.securitytracker.com/id/1036442
Source: cve@mitre.org
https://github.com/krb5/krb5/commit/93b4a6306a0026cf1cc31ac4bd8a49ba5d034ba7
Source: cve@mitre.org
https://lists.debian.org/debian-lts-announce/2018/01/msg00040.html
Source: cve@mitre.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AWL3KYFRJIX37EAM4DKCQQIQP2WBKL35/
Source: cve@mitre.org
http://krbdev.mit.edu/rt/Ticket/Display.html?id=8458
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking
http://lists.opensuse.org/opensuse-updates/2016-09/msg00035.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://rhn.redhat.com/errata/RHSA-2016-2591.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://web.mit.edu/kerberos/krb5-1.13/
Source: af854a3a-2127-422b-91ae-364da2661108
http://web.mit.edu/kerberos/krb5-1.14/
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.securityfocus.com/bid/92132
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.securitytracker.com/id/1036442
Source: af854a3a-2127-422b-91ae-364da2661108
https://github.com/krb5/krb5/commit/93b4a6306a0026cf1cc31ac4bd8a49ba5d034ba7
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.debian.org/debian-lts-announce/2018/01/msg00040.html
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AWL3KYFRJIX37EAM4DKCQQIQP2WBKL35/
Source: af854a3a-2127-422b-91ae-364da2661108

20 reference(s) from NVD

Quick Stats

CVSS v3 Score
6.5 / 10.0
EPSS (Exploit Probability)
3.3%
87th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-476

Affected Vendors

mit

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