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CVE-2016-3119

Published: 26 March 2016

The process_db_args function in plugins/kdb/ldap/libkdb_ldap/ldap_principal2.c in the LDAP KDB module in kadmind in MIT Kerberos 5 (aka krb5) through 1.13.4 and 1.14.x through 1.14.1 mishandles the DB argument, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted request to modify a principal.

From the Ubuntu Security Team

It was discovered that Kerberos incorrectly handled certain requests. A remote authenticated attacker could possibly use this issue to cause a denial of service.

Notes

AuthorNote
ratliff
kadmind is not supported in core and touch

Priority

Medium

Cvss 3 Severity Score

5.3

Score breakdown

Status

Package Release Status
krb5
Launchpad, Ubuntu, Debian
artful Not vulnerable
(1.14.3+dfsg-2ubuntu1)
bionic Not vulnerable
(1.14.3+dfsg-2ubuntu1)
cosmic Not vulnerable
(1.14.3+dfsg-2ubuntu1)
disco Not vulnerable
(1.14.3+dfsg-2ubuntu1)
eoan Not vulnerable
(1.14.3+dfsg-2ubuntu1)
focal Not vulnerable
(1.14.3+dfsg-2ubuntu1)
groovy Not vulnerable
(1.14.3+dfsg-2ubuntu1)
hirsute Not vulnerable
(1.14.3+dfsg-2ubuntu1)
trusty
Released (1.12+dfsg-2ubuntu5.4)
upstream
Released (1.14.2+dfsg-1)
wily Ignored
(end of life)
xenial
Released (1.13.2+dfsg-5ubuntu2.1)
yakkety Not vulnerable
(1.14.3+dfsg-2ubuntu1)
zesty Not vulnerable
(1.14.3+dfsg-2ubuntu1)
precise Ignored
(end of life)
Patches:
upstream: https://github.com/krb5/krb5/commit/08c642c09c38a9c6454ab43a9b53b2a89b9eef99
Binaries built from this source package are in Universe and so are supported by the community.

Severity score breakdown

Parameter Value
Base score 5.3
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H