NVD Vulnerability Detail
Search Exploit, PoC
CVE-2020-15025
Summary

ntpd in ntp 4.2.8 before 4.2.8p15 and 4.3.x before 4.3.101 allows remote attackers to cause a denial of service (memory consumption) by sending packets, because memory is not freed in situations where a CMAC key is used and associated with a CMAC algorithm in the ntp.keys file.

Publication Date June 25, 2020, 4:15 a.m.
Registration Date Jan. 26, 2021, 10:40 a.m.
Last Update Nov. 21, 2024, 2:04 p.m.
CVSS3.1 : MEDIUM
スコア 4.9
Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
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) 高
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) 高
CVSS2.0 : MEDIUM
Score 4.0
Vector AV:N/AC:L/Au:S/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) 単一
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: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:*:*:*:*:*:*:*:* 4.3.97 4.3.101
cpe:2.3:a:ntp:ntp:4.2.8:p14:*:*:*:*:*:*
Configuration2 or higher or less more than less than
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
Configuration3 or higher or less more than less than
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*
Configuration4 or higher or less more than less than
cpe:2.3:o:netapp:8300_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:8300:-:*:*:*:*:*:*:*
Configuration5 or higher or less more than less than
cpe:2.3:o:netapp:8700_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:8700:-:*:*:*:*:*:*:*
Configuration6 or higher or less more than less than
cpe:2.3:o:netapp:a400_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:a400:-:*:*:*:*:*:*:*
Configuration7 or higher or less more than less than
cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*
Configuration8 or higher or less more than less than
cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*
Configuration9 or higher or less more than less than
cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*
Configuration10 or higher or less more than less than
cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*
Configuration11 or higher or less more than less than
cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:*
Configuration12 or higher or less more than less than
cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:*
Configuration13 or higher or less more than less than
cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:*
Configuration14 or higher or less more than less than
cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*
Configuration15 or higher or less more than less than
cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List
JVN Vulnerability Information
ntp における有効期限後のメモリの解放の欠如に関する脆弱性
Title ntp における有効期限後のメモリの解放の欠如に関する脆弱性
Summary

ntp には、有効期限後のメモリの解放の欠如に関する脆弱性が存在します。

Possible impacts 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 June 23, 2020, midnight
Registration Date Aug. 4, 2020, 9:03 a.m.
Last Update Aug. 4, 2020, 9:03 a.m.
Affected System
NTP Project
NTP 4.2.8 以上 4.2.8p15 未満
NTP 4.3.101 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
Change Log
No Changed Details Date of change
1 [2020年08月04日]
  掲載		 Aug. 4, 2020, 9:03 a.m.