Home/CVE/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
CVE

CVE-2018-16860

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

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.

HIGH · CVSS 7.5 EPSS 0.01169
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-358Improperly Implemented Security Check for Standard
CWE-358Improperly Implemented Security Check for Standard
▤

Affected Products & Versions

4
samba>= 4.8.0 and < 4.8.12
samba>= 4.9.0 and < 4.9.8
samba>= 4.10.0 and < 4.10.3
heimdal project heimdal>= 0.8 and <= 7.5.0
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.0 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD31 Jul 2019 · 03:15 PM
CVSS VectorCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

8
suse-csafopenSUSE-SU-2024:10946-1
suse-csafopenSUSE-SU-2024:11365-1
usnUSN-5675-1
suse-csafopenSUSE-SU-2019:1888-1
suse-csafopenSUSE-SU-2019:1682-1
🔗

References & Sources

17
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00026.html
http://seclists.org/fulldisclosure/2019/Aug/11
http://seclists.org/fulldisclosure/2019/Aug/13
http://seclists.org/fulldisclosure/2019/Aug/14
http://seclists.org/fulldisclosure/2019/Aug/15
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16860Issue TrackingThird Party Advisory
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