CVE-2020-11868 : ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows an off-path attacker

ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows an off-path attacker to block unauthenticated synchronization via a server mode packet with a spoofed source IP address, because transmissions are rescheduled even when a packet lacks a valid origin timestamp.

Published 2020-04-17 04:15:11

Updated 2022-04-26 17:05:57

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2020-11868

Debian » Debian Linux » Version: 8.0
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
Matching versions
Redhat » Enterprise Linux » Version: 7.0
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
Matching versions
NTP » NTP
Versions up to, including, (<=) 4.2.7
cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*
Matching versions
NTP » NTP
Versions from including (>=) 4.3.98 and before (<) 4.3.100
cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8
cpe:2.3:a:ntp:ntp:4.2.8:-:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P2-rc1
cpe:2.3:a:ntp:ntp:4.2.8:p2-rc1:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P1
cpe:2.3:a:ntp:ntp:4.2.8:p1:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P2
cpe:2.3:a:ntp:ntp:4.2.8:p2:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P1-beta1
cpe:2.3:a:ntp:ntp:4.2.8:p1-beta1:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P1-beta2
cpe:2.3:a:ntp:ntp:4.2.8:p1-beta2:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P1-beta3
cpe:2.3:a:ntp:ntp:4.2.8:p1-beta3:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P1-beta4
cpe:2.3:a:ntp:ntp:4.2.8:p1-beta4:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P1-beta5
cpe:2.3:a:ntp:ntp:4.2.8:p1-beta5:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P1-rc1
cpe:2.3:a:ntp:ntp:4.2.8:p1-rc1:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P1-rc2
cpe:2.3:a:ntp:ntp:4.2.8:p1-rc2:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P2-rc2
cpe:2.3:a:ntp:ntp:4.2.8:p2-rc2:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P2-rc3
cpe:2.3:a:ntp:ntp:4.2.8:p2-rc3:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P3
cpe:2.3:a:ntp:ntp:4.2.8:p3:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P3-rc1
cpe:2.3:a:ntp:ntp:4.2.8:p3-rc1:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P3-rc2
cpe:2.3:a:ntp:ntp:4.2.8:p3-rc2:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P3-rc3
cpe:2.3:a:ntp:ntp:4.2.8:p3-rc3:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P4
cpe:2.3:a:ntp:ntp:4.2.8:p4:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P5
cpe:2.3:a:ntp:ntp:4.2.8:p5:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P6
cpe:2.3:a:ntp:ntp:4.2.8:p6:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P7
cpe:2.3:a:ntp:ntp:4.2.8:p7:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P8
cpe:2.3:a:ntp:ntp:4.2.8:p8:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P9
cpe:2.3:a:ntp:ntp:4.2.8:p9:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P11
cpe:2.3:a:ntp:ntp:4.2.8:p11:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P10
cpe:2.3:a:ntp:ntp:4.2.8:p10:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P12
cpe:2.3:a:ntp:ntp:4.2.8:p12:*:*:*:*:*:*
Matching versions
NTP » NTP » Version: 4.2.8 Update P13
cpe:2.3:a:ntp:ntp:4.2.8:p13:*:*:*:*:*:*
Matching versions
Opensuse » Leap » Version: 15.1
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
Matching versions
Opensuse » Leap » Version: 15.2
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
Matching versions
Netapp » Clustered Data Ontap » Version: N/A
cpe:2.3:o:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*
Matching versions
Netapp » Data Ontap » Version: N/A For 7-mode
cpe:2.3:a:netapp:data_ontap:-:*:*:*:*:7-mode:*:*
Matching versions
Netapp » Virtual Storage Console » For Vsphere
Versions from including (>=) 7.2
cpe:2.3:a:netapp:virtual_storage_console:*:*:*:*:*:vsphere:*:*
Matching versions
Netapp » Hci Management Node » Version: N/A
cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*
Matching versions
Netapp » Solidfire » Version: N/A
cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*
Matching versions
Netapp » Vasa Provider For Clustered Data Ontap » For Vsphere
Versions from including (>=) 7.2
cpe:2.3:a:netapp:vasa_provider_for_clustered_data_ontap:*:*:*:*:*:vsphere:*:*
Matching versions
Netapp » Vasa Provider For Clustered Data Ontap
Versions from including (>=) 7.2
cpe:2.3:a:netapp:vasa_provider_for_clustered_data_ontap:*:*:*:*:*:*:*:*
Matching versions
Netapp » Fabric-attached Storage 8700 Firmware » Version: N/A
cpe:2.3:o:netapp:fabric-attached_storage_8700_firmware:-:*:*:*:*:*:*:*
Matching versions
When used together with: Netapp » Fabric-attached Storage 8700 » Version: N/A
Netapp » Fabric-attached Storage 8300 Firmware » Version: N/A
cpe:2.3:o:netapp:fabric-attached_storage_8300_firmware:-:*:*:*:*:*:*:*
Matching versions
When used together with: Netapp » Fabric-attached Storage 8300 » Version: N/A
Netapp » All Flash Fabric-attached Storage A400 Firmware » Version: N/A
cpe:2.3:o:netapp:all_flash_fabric-attached_storage_a400_firmware:-:*:*:*:*:*:*:*
Matching versions
When used together with: Netapp » All Flash Fabric-attached Storage A400 » Version: N/A
Netapp » Hci Storage Node Firmware » Version: N/A
cpe:2.3:o:netapp:hci_storage_node_firmware:-:*:*:*:*:*:*:*
Matching versions
When used together with: Netapp » Hci Storage Node » Version: N/A
Netapp » Fabric-attached Storage A400 Firmware » Version: N/A
cpe:2.3:o:netapp:fabric-attached_storage_a400_firmware:-:*:*:*:*:*:*:*
Matching versions
When used together with: Netapp » Fabric-attached Storage A400 » Version: N/A
Netapp » All Flash Fabric-attached Storage 8300 Firmware » Version: N/A
cpe:2.3:o:netapp:all_flash_fabric-attached_storage_8300_firmware:-:*:*:*:*:*:*:*
Matching versions
When used together with: Netapp » All Flash Fabric-attached Storage 8300 » Version: N/A
Netapp » All Flash Fabric-attached Storage 8700 Firmware » Version: N/A
cpe:2.3:o:netapp:all_flash_fabric-attached_storage_8700_firmware:-:*:*:*:*:*:*:*
Matching versions
When used together with: Netapp » All Flash Fabric-attached Storage 8700 » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2020-11868

EPSS FAQ

1.42%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 86 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-11868

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
5.9	MEDIUM	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H	2.2	3.6	MITRE
Attack Vector: Network Attack Complexity: High Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2020-11868

CWE-346 Origin Validation Error

The product does not properly verify that the source of data or communication is valid.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2020-11868

https://www.oracle.com//security-alerts/cpujul2021.html

Oracle Critical Patch Update Advisory - July 2021
Patch;Third Party Advisory

CVEs referencing this url
https://security.gentoo.org/glsa/202007-12

NTP: Multiple vulnerabilities (GLSA 202007-12) — Gentoo security
Third Party Advisory

CVEs referencing this url
https://security.netapp.com/advisory/ntap-20200424-0002/

CVE-2020-11868 NTP Vulnerability in NetApp Products | NetApp Product Security
Third Party Advisory
http://support.ntp.org/bin/view/Main/NtpBug3592

NtpBug3592 < Main < NTP
Patch;Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1716665

1716665 – ntp: DoS on client ntpd using server mode packet
Issue Tracking;Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00005.html

[security-announce] openSUSE-SU-2020:0934-1: moderate: Security update f
Mailing List;Third Party Advisory

CVEs referencing this url
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00044.html

[security-announce] openSUSE-SU-2020:1007-1: moderate: Security update f
Mailing List;Third Party Advisory

CVEs referencing this url
https://lists.debian.org/debian-lts-announce/2020/05/msg00004.html

[SECURITY] [DLA 2201-1] ntp security update
Mailing List;Third Party Advisory

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Vulnerability Details : CVE-2020-11868

Products affected by CVE-2020-11868

Exploit prediction scoring system (EPSS) score for CVE-2020-11868

CVSS scores for CVE-2020-11868

CWE ids for CVE-2020-11868

References for CVE-2020-11868