CVE-2020-11868
HIGH EPSS 79.2%
Published Apr 17, 20206y ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
Published Apr 17, 2020 6y ago
Last Modified Jun 17, 2026 2w ago
Description
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High
Threat Intelligence
EPSS Exploit Probability
79.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available
Weaknesses 1
CWE-346
Affected Products 54
| Vendor | Product | Version | Range |
|---|---|---|---|
| ntp | ntp | * | ≤4.2.7 |
| ntp | ntp | * | ≥4.3.98 – <4.3.100 |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| redhat | enterprise_linux | 7.0 | any |
| netapp | data_ontap | * | any |
| netapp | hci_management_node | * | any |
| netapp | solidfire | * | any |
| netapp | vasa_provider_for_clustered_data_ontap | * | ≥7.2 |
| netapp | vasa_provider_for_clustered_data_ontap | * | ≥7.2 |
| netapp | virtual_storage_console | * | ≥7.2 |
| netapp | clustered_data_ontap | * | any |
| netapp | hci_storage_node_firmware | * | any |
| netapp | hci_storage_node | * | any |
| netapp | fabric-attached_storage_8300_firmware | * | any |
| netapp | fabric-attached_storage_8300 | * | any |
| netapp | fabric-attached_storage_8700_firmware | * | any |
| netapp | fabric-attached_storage_8700 | * | any |
| netapp | fabric-attached_storage_a400_firmware | * | any |
| netapp | fabric-attached_storage_a400 | * | any |
| netapp | all_flash_fabric-attached_storage_8300_firmware | * | any |
| netapp | all_flash_fabric-attached_storage_8300 | * | any |
| netapp | all_flash_fabric-attached_storage_8700_firmware | * | any |
| netapp | all_flash_fabric-attached_storage_8700 | * | any |
| netapp | all_flash_fabric-attached_storage_a400_firmware | * | any |
| netapp | all_flash_fabric-attached_storage_a400 | * | any |
| debian | debian_linux | 8.0 | any |
| opensuse | leap | 15.1 | any |
| opensuse | leap | 15.2 | any |
References 8
- lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00005.html
- lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00044.html
- support.ntp.org http://support.ntp.org/bin/view/Main/NtpBug3592
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=1716665
- lists.debian.org https://lists.debian.org/debian-lts-announce/2020/05/msg00004.html
- security.gentoo.org https://security.gentoo.org/glsa/202007-12
- security.netapp.com https://security.netapp.com/advisory/ntap-20200424-0002/
- oracle.com https://www.oracle.com//security-alerts/cpujul2021.html
Remediation
- support.ntp.org http://support.ntp.org/bin/view/Main/NtpBug3592
- oracle.com https://www.oracle.com//security-alerts/cpujul2021.html