National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-16860 Detail

Current 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.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.5 HIGH
Vector: AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H (V3 legend)
Impact Score: 5.9
Exploitability Score: 1.6


Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 6.0 MEDIUM
Vector: (AV:N/AC:M/Au:S/C:P/I:P/A:P) (V2 legend)
Impact Subscore: 6.4
Exploitability Subscore: 6.8


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): Single
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): Partial
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
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-2018-16860 Issue Tracking Third Party Advisory
https://seclists.org/bugtraq/2019/Aug/21
https://seclists.org/bugtraq/2019/Aug/22
https://seclists.org/bugtraq/2019/Aug/23
https://seclists.org/bugtraq/2019/Aug/25
https://www.samba.org/samba/security/CVE-2018-16860.html Mitigation Vendor Advisory

Technical Details

Vulnerability Type (View All)

  • Improperly Implemented Security Check for Standard (CWE-358)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
4.8.0
Up to (excluding)
4.8.12
 cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
4.9.0
Up to (excluding)
4.9.8
 cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
4.10.0
Up to (excluding)
4.10.3

Configuration 2 ( hide )
 cpe:2.3:a:heimdal_project:heimdal:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
0.8
Up to (including)
7.5.0


Change History

5 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-16860
NVD Published Date:
07/31/2019
NVD Last Modified:
08/14/2019