NVD Vulnerability Detail
Search Exploit, PoC
CVE-2020-13817
Summary

ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows remote attackers to cause a denial of service (daemon exit or system time change) by predicting transmit timestamps for use in spoofed packets. The victim must be relying on unauthenticated IPv4 time sources. There must be an off-path attacker who can query time from the victim's ntpd instance.

Publication Date June 4, 2020, 10:15 p.m.
Registration Date Jan. 26, 2021, 11:52 a.m.
Last Update Nov. 21, 2024, 2:01 p.m.
CVSS3.1 : HIGH
スコア 7.4
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/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) 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) 高
可用性への影響(A) 高
CVSS2.0 : MEDIUM
Score 5.8
Vector AV:N/AC:M/Au:N/C:N/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) 不要
機密性への影響(C) なし
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:ntp:ntp:4.2.8:p5:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p2:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p3:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p9:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p4:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p7:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p8:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p6:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p1:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p10:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p3-rc3:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p3-rc2:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p3-rc1:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p2-rc3:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p2-rc2:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p2-rc1:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p1-rc2:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p1-rc1:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p1-beta5:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p1-beta4:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p1-beta3:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p1-beta2:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p1-beta1:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p11:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p12:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:4.2.8:p13:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:* 4.3.0 4.3.100
cpe:2.3:a:ntp:ntp:4.2.8:-:*:*:*:*:*:*
cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:* 4.2.8
Configuration2 or higher or less more than less than
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:element_software:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:data_ontap:-:*:*:*:*:7-mode:*:*
cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:ontap_tools:-:*:*:*:*:vmware_vsphere:*:*
Configuration3 or higher or less more than less than
cpe:2.3:o:netapp:hci_compute_node_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:*
Configuration4 or higher or less more than less than
cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*
Configuration5 or higher or less more than less than
cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*
Configuration6 or higher or less more than less than
cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*
Configuration7 or higher or less more than less than
cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*
Configuration8 or higher or less more than less than
cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:*
Configuration9 or higher or less more than less than
cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:*
Configuration10 or higher or less more than less than
cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:*
Configuration11 or higher or less more than less than
cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*
Configuration12 or higher or less more than less than
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
Configuration13 or higher or less more than less than
cpe:2.3:o:fujitsu:m10-1_firmware:*:*:*:*:*:*:*:* xcp2410
execution environment
1 cpe:2.3:h:fujitsu:m10-1:-:*:*:*:*:*:*:*
Configuration14 or higher or less more than less than
cpe:2.3:o:fujitsu:m10-4_firmware:*:*:*:*:*:*:*:* xcp2410
execution environment
1 cpe:2.3:h:fujitsu:m10-4:-:*:*:*:*:*:*:*
Configuration15 or higher or less more than less than
cpe:2.3:o:fujitsu:m10-4s_firmware:*:*:*:*:*:*:*:* xcp2410
execution environment
1 cpe:2.3:h:fujitsu:m10-4s:-:*:*:*:*:*:*:*
Configuration16 or higher or less more than less than
cpe:2.3:o:fujitsu:m12-1_firmware:*:*:*:*:*:*:*:* xcp2410
execution environment
1 cpe:2.3:h:fujitsu:m12-1:-:*:*:*:*:*:*:*
Configuration17 or higher or less more than less than
cpe:2.3:o:fujitsu:m12-2_firmware:*:*:*:*:*:*:*:* xcp2410
execution environment
1 cpe:2.3:h:fujitsu:m12-2:-:*:*:*:*:*:*:*
Configuration18 or higher or less more than less than
cpe:2.3:o:fujitsu:m12-2s_firmware:*:*:*:*:*:*:*:* xcp2410
execution environment
1 cpe:2.3:h:fujitsu:m12-2s:-:*:*:*:*:*:*:*
Configuration19 or higher or less more than less than
cpe:2.3:o:fujitsu:m10-4_firmware:*:*:*:*:*:*:*:* xcp3110
execution environment
1 cpe:2.3:h:fujitsu:m10-4:-:*:*:*:*:*:*:*
Configuration20 or higher or less more than less than
cpe:2.3:o:fujitsu:m10-4s_firmware:*:*:*:*:*:*:*:* xcp3110
execution environment
1 cpe:2.3:h:fujitsu:m10-4s:-:*:*:*:*:*:*:*
Configuration21 or higher or less more than less than
cpe:2.3:o:fujitsu:m12-1_firmware:*:*:*:*:*:*:*:* xcp3110
execution environment
1 cpe:2.3:h:fujitsu:m12-1:-:*:*:*:*:*:*:*
Configuration22 or higher or less more than less than
cpe:2.3:o:fujitsu:m12-2_firmware:*:*:*:*:*:*:*:* xcp3110
execution environment
1 cpe:2.3:h:fujitsu:m12-2:-:*:*:*:*:*:*:*
Configuration23 or higher or less more than less than
cpe:2.3:o:fujitsu:m12-2s_firmware:*:*:*:*:*:*:*:* xcp3110
execution environment
1 cpe:2.3:h:fujitsu:m12-2s:-:*:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List
JVN Vulnerability Information
ntp における入力確認に関する脆弱性
Title ntp における入力確認に関する脆弱性
Summary

ntp には、入力確認に関する脆弱性が存在します。

Possible impacts 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 March 3, 2020, midnight
Registration Date July 1, 2020, 2:54 p.m.
Last Update Aug. 24, 2023, 2:24 p.m.
Affected System
NTP Project
NTP 4.2.8p14 未満
NTP 4.3.100 未満の 4.3.x
CVE (情報セキュリティ 共通脆弱性識別子)
CWE (共通脆弱性タイプ一覧)
ベンダー情報
その他
Change Log
No Changed Details Date of change
1 [2020年07月01日]
  掲載		 July 1, 2020, 2:54 p.m.
2 [2023年08月24日]
  参考情報：JVN (JVNVU#96001661) を追加
  参考情報：ICS-CERT ADVISORY (ICSA-23-234-01) を追加		 Aug. 24, 2023, 2:24 p.m.