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Security Database

CVE

CWE

Training

CVE-2020-13817

Published: Jun 4, 2020

Modified: May 5, 2025

PUBLISHED

CVSS v3.0

5.9

MEDIUM

Description

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.

Vendor	Product	Versions
n/a	n/a	affected `n/a`

CVSS v3.0 Details

CVSS v3.0 Vector

CVSS:3.0/AC:H/AV:N/A:H/C:N/I:N/PR:N/S:U/UI:N

Attack Complexity

High

Attack Vector

Network

Availability

High

Confidentiality

None

Integrity

None

Privileges Required

None

Scope

Unchanged

User Interaction

None

References

openSUSE-SU-2020:0934

vendor-advisory

x_refsource_SUSE

openSUSE-SU-2020:1007

vendor-advisory

x_refsource_SUSE

vendor-advisory

x_refsource_GENTOO

https://www.oracle.com/security-alerts/cpujan2022.html

x_refsource_MISC

http://support.ntp.org/bin/view/Main/NtpBug3596

x_refsource_MISC

https://bugs.ntp.org/show_bug.cgi?id=3596

x_refsource_MISC

https://security.netapp.com/advisory/ntap-20200625-0004/

x_refsource_CONFIRM

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