CVE-2018-5729

Publication date 6 March 2018

Last updated 25 August 2025

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

4.7 · Medium

Score breakdown

Description

MIT krb5 1.6 or later allows an authenticated kadmin with permission to add principals to an LDAP Kerberos database to cause a denial of service (NULL pointer dereference) or bypass a DN container check by supplying tagged data that is internal to the database module.

From the Ubuntu Security Team

It was discovered that Kerberos incorrectly handled tagged data. A remote authenticated attacker could possibly use this issue to obtain sensitive information or cause a denial of service.

Status

Package Ubuntu Release Status
krb5 21.04 hirsute
Not affected
20.10 groovy
Not affected
20.04 LTS focal
Not affected
19.10 eoan
Not affected
19.04 disco
Not affected
18.10 cosmic
Fixed 1.16-2ubuntu1.1
18.04 LTS bionic
Fixed 1.16-2ubuntu0.1
17.10 artful Ignored end of life
16.04 LTS xenial
Fixed 1.13.2+dfsg-5ubuntu2.1
14.04 LTS trusty
Fixed 1.12+dfsg-2ubuntu5.4

Severity score breakdown

Parameter Value
Base score 4.7 · Medium
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Scope Unchanged
Confidentiality Low
Integrity impact Low
Availability impact Low
Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

References

Other references