NVD Vulnerability Detail

CVE-2018-16860

Summary	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.
Publication Date	Aug. 1, 2019, 12:15 a.m.
Registration Date	March 1, 2021, 7:05 p.m.
Last Update	Nov. 21, 2024, 12:53 p.m.

CVSS3.0 : HIGH
スコア	7.5
Vector	CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
攻撃元区分(AV)	ネットワーク
攻撃条件の複雑さ(AC)	高
攻撃に必要な特権レベル(PR)	低
利用者の関与(UI)	不要
影響の想定範囲(S)	変更なし
機密性への影響(C)	高
完全性への影響(I)	高
可用性への影響(A)	高

CVSS2.0 : MEDIUM
Score	6.0
Vector	AV:N/AC:M/Au:S/C:P/I:P/A:P
攻撃元区分(AV)	ネットワーク
攻撃条件の複雑さ(AC)	中
攻撃前の認証要否(Au)	単一
機密性への影響(C)	低
完全性への影響(I)	低
可用性への影響(A)	低
Get all privileges.	いいえ
Get user privileges	いいえ
Get other privileges	いいえ
User operation required	いいえ

Affected software configurations

Configuration1	or higher	or less	more than	less than
cpe:2.3:a:samba:samba::::::::	4.10.0			4.10.3
cpe:2.3:a:samba:samba::::::::	4.8.0			4.8.12
cpe:2.3:a:samba:samba::::::::	4.9.0			4.9.8

Configuration2		or higher	or less	more than	less than
cpe:2.3:a:heimdal_project:heimdal::::::::		0.8	7.5.0

Related information, measures and tools

No	URL	タグ
1	http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00026.html
2	http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00026.html
3	http://seclists.org/fulldisclosure/2019/Aug/11
4	http://seclists.org/fulldisclosure/2019/Aug/11
5	http://seclists.org/fulldisclosure/2019/Aug/13
6	http://seclists.org/fulldisclosure/2019/Aug/13
7	http://seclists.org/fulldisclosure/2019/Aug/14
8	http://seclists.org/fulldisclosure/2019/Aug/14
9	http://seclists.org/fulldisclosure/2019/Aug/15
10	http://seclists.org/fulldisclosure/2019/Aug/15
11	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16860	Issue Tracking Third Party Advisory
12	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16860	Issue Tracking Third Party Advisory
13	https://seclists.org/bugtraq/2019/Aug/21
14	https://seclists.org/bugtraq/2019/Aug/21
15	https://seclists.org/bugtraq/2019/Aug/22
16	https://seclists.org/bugtraq/2019/Aug/22
17	https://seclists.org/bugtraq/2019/Aug/23
18	https://seclists.org/bugtraq/2019/Aug/23
19	https://seclists.org/bugtraq/2019/Aug/25
20	https://seclists.org/bugtraq/2019/Aug/25
21	https://security.gentoo.org/glsa/202003-52
22	https://security.gentoo.org/glsa/202003-52
23	https://support.apple.com/HT210346
24	https://support.apple.com/HT210346
25	https://support.apple.com/HT210348
26	https://support.apple.com/HT210348
27	https://support.apple.com/HT210351
28	https://support.apple.com/HT210351
29	https://support.apple.com/HT210353
30	https://support.apple.com/HT210353
31	https://www.samba.org/samba/security/CVE-2018-16860.html	Mitigation Vendor Advisory
32	https://www.samba.org/samba/security/CVE-2018-16860.html	Mitigation Vendor Advisory
33	https://www.synology.com/security/advisory/Synology_SA_19_23
34	https://www.synology.com/security/advisory/Synology_SA_19_23

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-358	不適切に実装されたセキュリティチェック	https://cwe.mitre.org/data/definitions/358.html

JVN Vulnerability Information

Heimdal におけるセキュリティチェックに関する脆弱性

Title	Heimdal におけるセキュリティチェックに関する脆弱性
Summary	Heimdal には、セキュリティチェックに関する脆弱性が存在します。
Possible impacts	情報を取得される、情報を改ざんされる、およびサービス運用妨害 (DoS) 状態にされる可能性があります。
Solution	ベンダ情報および参考情報を参照して適切な対策を実施してください。
Publication Date	Sept. 11, 2018, midnight
Registration Date	Aug. 14, 2019, 9:54 a.m.
Last Update	Aug. 14, 2019, 9:54 a.m.

Affected System

Samba Project

Samba

Heimdal

Heimdal 4.10.3 未満の 4.10.x

Heimdal 4.8.12 未満の 4.8.x

Heimdal 4.9.8 未満の 4.9.x

CVE (情報セキュリティ共通脆弱性識別子)

No	Name	URL
Common Vulnerabilities and Exposures (CVE)
1	CVE-2018-16860	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16860
National Vulnerability Database (NVD)
2	CVE-2018-16860	https://nvd.nist.gov/vuln/detail/CVE-2018-16860

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-358	https://cwe.mitre.org/data/definitions/358.html

ベンダー情報

No	Name	URL
Heimdal
1	Top Page	https://www.h5l.org/
Samba Security Announcement
2	Samba AD DC S4U2Self/S4U2Proxy unkeyed checksum	https://www.samba.org/samba/security/CVE-2018-16860.html

その他

No	Name	URL
関連文書
1	Bug 1705877	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16860

Change Log

No	Changed Details	Date of change
1	[2019年08月14日] 掲載	Aug. 14, 2019, 9:54 a.m.