CVE-2018-16860

HIGH

Samba <4.8.12, <4.9.8, <4.10.3 - Privilege Escalation

Title source: llm

Description

A flaw was found in samba's Heimdal KDC implementation, versions 4.8.x up to, excluding 4.8.12, 4.9.x up to, excluding 4.9.8 and 4.10.x up to, excluding 4.10.3, when used in AD DC mode. A man in the middle attacker could use this flaw to intercept the request to the KDC and replace the user name (principal) in the request with any desired user name (principal) that exists in the KDC effectively obtaining a ticket for that principal.

References (17)

[Vendor Advisory] https://support.apple.com/HT210346

[Vendor Advisory] https://support.apple.com/HT210348

[Vendor Advisory] https://support.apple.com/HT210351

[Vendor Advisory] https://www.synology.com/security/advisory/Synology_SA_19_23

[Issue Tracking, Third Party Advisory] https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16860

[Mitigation, Vendor Advisory] https://www.samba.org/samba/security/CVE-2018-16860.html

[Mailing List] https://seclists.org/bugtraq/2019/Aug/25

[Mailing List] https://seclists.org/bugtraq/2019/Aug/22

[Mailing List] https://seclists.org/bugtraq/2019/Aug/23

[Mailing List] https://seclists.org/bugtraq/2019/Aug/21

[Mailing List] http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00026.html

[Mailing List] http://seclists.org/fulldisclosure/2019/Aug/14

[Mailing List] http://seclists.org/fulldisclosure/2019/Aug/11

[Mailing List] http://seclists.org/fulldisclosure/2019/Aug/13

[Mailing List] http://seclists.org/fulldisclosure/2019/Aug/15

[Vendor Advisory] https://support.apple.com/HT210353

[Third Party Advisory] https://security.gentoo.org/glsa/202003-52

Scores

CVSS v3 7.5

EPSS 0.0202

EPSS Percentile 83.9%

Attack Vector NETWORK

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

Details

CWE

CWE-358

Status published

Products (2)

heimdal_project/heimdal 0.8 - 7.5.0

samba/samba 4.8.0 - 4.8.12

Published Jul 31, 2019

Tracked Since Feb 18, 2026