NVD Vulnerability Detail

CVE-2016-7433

Summary	NTP before 4.2.8p9 does not properly perform the initial sync calculations, which allows remote attackers to unspecified impact via unknown vectors, related to a "root distance that did not include the peer dispersion."
Publication Date	Jan. 14, 2017, 1:59 a.m.
Registration Date	Jan. 26, 2021, 2:17 p.m.
Last Update	Nov. 21, 2024, 11:57 a.m.

CVSS3.0 : MEDIUM
スコア	5.3
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
攻撃元区分(AV)	ネットワーク
攻撃条件の複雑さ(AC)	低
攻撃に必要な特権レベル(PR)	不要
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)	なし
完全性への影響(I)	なし
可用性への影響(A)	低

CVSS2.0 : MEDIUM
Score	5.0
Vector	AV:N/AC:L/Au:N/C:N/I:N/A:P
攻撃元区分(AV)	ネットワーク
攻撃条件の複雑さ(AC)	低
攻撃前の認証要否(Au)	不要
機密性への影響(C)	なし
完全性への影響(I)	なし
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:ntp:ntp::p8::::::*			4.2.8

Related information, measures and tools

No	URL	タグ
1	http://lists.opensuse.org/opensuse-updates/2016-12/msg00153.html
2	http://lists.opensuse.org/opensuse-updates/2016-12/msg00153.html
3	http://nwtime.org/ntp428p9_release/	Release Notes Vendor Advisory
4	http://nwtime.org/ntp428p9_release/	Release Notes Vendor Advisory
5	http://rhn.redhat.com/errata/RHSA-2017-0252.html
6	http://rhn.redhat.com/errata/RHSA-2017-0252.html
7	http://support.ntp.org/bin/view/Main/NtpBug3067	Issue Tracking Mitigation Vendor Advisory
8	http://support.ntp.org/bin/view/Main/NtpBug3067	Issue Tracking Mitigation Vendor Advisory
9	http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities	Vendor Advisory
10	http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities	Vendor Advisory
11	http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20171129-01-ntpd-en
12	http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20171129-01-ntpd-en
13	http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
14	http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
15	http://www.securityfocus.com/archive/1/539955/100/0/threaded
16	http://www.securityfocus.com/archive/1/539955/100/0/threaded
17	http://www.securityfocus.com/archive/1/540254/100/0/threaded
18	http://www.securityfocus.com/archive/1/540254/100/0/threaded
19	http://www.securityfocus.com/archive/1/archive/1/539955/100/0/threaded
20	http://www.securityfocus.com/archive/1/archive/1/539955/100/0/threaded
21	http://www.securityfocus.com/archive/1/archive/1/540254/100/0/threaded
22	http://www.securityfocus.com/archive/1/archive/1/540254/100/0/threaded
23	http://www.securityfocus.com/bid/94455
24	http://www.securityfocus.com/bid/94455
25	http://www.securitytracker.com/id/1037354
26	http://www.securitytracker.com/id/1037354
27	http://www.ubuntu.com/usn/USN-3349-1
28	http://www.ubuntu.com/usn/USN-3349-1
29	https://bto.bluecoat.com/security-advisory/sa139
30	https://bto.bluecoat.com/security-advisory/sa139
31	https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf
32	https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf
33	https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_us
34	https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_us
35	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ILMSYVQMMF37MANYEO7KBHOPSC74EKGN/
36	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ILMSYVQMMF37MANYEO7KBHOPSC74EKGN/
37	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PABKEYX6ABBFJZGMXKH57X756EJUDS3C/
38	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PABKEYX6ABBFJZGMXKH57X756EJUDS3C/
39	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U5E3XBBCK5IXOLDAH2E4M3QKIYIHUMMP/
40	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U5E3XBBCK5IXOLDAH2E4M3QKIYIHUMMP/
41	https://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.asc
42	https://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.asc
43	https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11
44	https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11
45	https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-227
46	https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-227
47	https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-227/
48	https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-227/
49	https://www.kb.cert.org/vuls/id/633847	Third Party Advisory US Government Resource
50	https://www.kb.cert.org/vuls/id/633847	Third Party Advisory US Government Resource

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-682	計算の誤り	https://cwe.mitre.org/data/definitions/682.html

JVN Vulnerability Information

NTP における脆弱性

Title	NTP における脆弱性
Summary	NTP には、"ピア分散 (peer dispersion) を含まない root distance" に関する処理に不備があるため、不特定の影響を受ける脆弱性が存在します。
Possible impacts	リモートの攻撃者により、不特定の影響を受ける可能性があります。
Solution	ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。
Publication Date	Nov. 21, 2016, midnight
Registration Date	Jan. 26, 2017, 11:44 a.m.
Last Update	Jan. 26, 2017, 11:44 a.m.

Affected System

NTP Project

NTP 4.2.8p9 未満

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-2016-7433	http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7433
National Vulnerability Database (NVD)
2	CVE-2016-7433	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-7433

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-682	https://cwe.mitre.org/data/definitions/682.html

ベンダー情報

No	Name	URL
Network Time Foundation
1	Network Time Foundation Publishes NTP 4.2.8p9	http://nwtime.org/ntp428p9_release/
ntp.org
2	NTP Bug 3067	http://support.ntp.org/bin/view/Main/NtpBug3067
3	Software Downloads -- Current versions of NTP	http://support.ntp.org/bin/view/Main/SoftwareDownloads
Security Notice
4	November 2016 ntp-4.2.8p9 NTP Security Vulnerability Announcement (HIGH for Windows, MEDUIM otherwise)	http://support.ntp.org/bin/view/Main/SecurityNotice#November_2016_ntp_4_2_8p9_NTP_Se

その他

No	Name	URL
JVN
1	JVNVU#95781418	https://jvn.jp/vu/JVNVU95781418/index.html
2	JVNVU#99531229	https://jvn.jp/vu/JVNVU99531229/
US-CERT Vulnerability Note
3	VU#633847	https://www.kb.cert.org/vuls/id/633847

Change Log

No	Changed Details	Date of change
0	[2017年01月26日] 掲載	Feb. 17, 2018, 10:37 a.m.
1	[2021年06月10日] 参考情報：JVN (JVNVU#95781418) を追加	June 10, 2021, 1:48 p.m.