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CVE-2018-5710

Published: 16 January 2018

An issue was discovered in MIT Kerberos 5 (aka krb5) through 1.16. The pre-defined function "strlen" is getting a "NULL" string as a parameter value in plugins/kdb/ldap/libkdb_ldap/ldap_principal2.c in the Key Distribution Center (KDC), which allows remote authenticated users to cause a denial of service (NULL pointer dereference) via a modified kadmin client.

Notes

AuthorNote
ccdm94
this CVE was patched as CVE-2018-5729.

Priority

Low

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
krb5
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(1.16.1-1)
artful Ignored
(end of life)
bionic
Released (1.16-2ubuntu0.1)
cosmic Ignored
(end of life)
disco Not vulnerable
(1.16.1-1)
eoan Not vulnerable
(1.16.1-1)
focal Not vulnerable
(1.17-6ubuntu4)
groovy Not vulnerable
(1.16.1-1)
impish Not vulnerable
(1.18.3-6)
jammy Not vulnerable
(1.19.2-2)
trusty
Released (1.12+dfsg-2ubuntu5.4)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (1.16.1)
xenial
Released (1.13.2+dfsg-5ubuntu2.1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
Patches:
upstream: https://github.com/krb5/krb5/commit/e1caf6fb74981da62039846931ebdffed71309d1
Binaries built from this source package are in Universe and so are supported by the community.

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H