Vulnerability Details : CVE-2020-16166

The Linux kernel through 5.7.11 allows remote attackers to make observations that help to obtain sensitive information about the internal state of the network RNG, aka CID-f227e3ec3b5c. This is related to drivers/char/random.c and kernel/time/timer.c.

Published 2020-07-30 21:15:12

Updated 2022-04-26 17:06:14

Source MITRE

View at NVD, CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2020-16166

Probability of exploitation activity in the next 30 days: 0.21%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 59 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2020-16166

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Source
4.3	MEDIUM	AV:N/AC:M/Au:N/C:P/I:N/A:N	8.6	2.9	nvd@nist.gov
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: Partial Integrity Impact: None Availability Impact: None
3.7	LOW	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N	2.2	1.4	nvd@nist.gov
Attack Vector: Network Attack Complexity: High Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: Low Integrity: None Availability: None

CWE ids for CVE-2020-16166

CWE-330 Use of Insufficiently Random Values

The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2020-16166

https://usn.ubuntu.com/4526-1/

USN-4526-1: Linux kernel vulnerabilities | Ubuntu security notices | Ubuntu
Third Party Advisory

CVEs referencing this url
https://security.netapp.com/advisory/ntap-20200814-0004/

CVE-2020-16166 Linux Kernel Vulnerability in NetApp Products | NetApp Product Security
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html

[SECURITY] [DLA 2420-2] linux regression update
Mailing List;Third Party Advisory

CVEs referencing this url
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f227e3ec3b5cad859ad15666874405e8c1bbc1d4

kernel/git/torvalds/linux.git - Linux kernel source tree
Patch;Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MFBCLQWJI5I4G25TVJNLXLAXJ4MERQNW/

[SECURITY] Fedora 32 Update: kernel-5.7.14-200.fc32 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory
https://arxiv.org/pdf/2012.07432.pdf

Technical Description;Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html

[SECURITY] [DLA 2385-1] linux-4.19 security update
Mailing List;Third Party Advisory

CVEs referencing this url
https://www.oracle.com/security-alerts/cpuApr2021.html

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

CVEs referencing this url
https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html

[SECURITY] [DLA 2420-1] linux security update
Mailing List;Third Party Advisory

CVEs referencing this url
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AAPTLPAEKVAJYJ4LHN7VH4CN2W75R2YW/

[SECURITY] Fedora 31 Update: kernel-5.7.15-100.fc31 - package-announce - Fedora Mailing-Lists
Third Party Advisory
https://usn.ubuntu.com/4525-1/

USN-4525-1: Linux kernel vulnerabilities | Ubuntu security notices | Ubuntu
Third Party Advisory

CVEs referencing this url
https://github.com/torvalds/linux/commit/f227e3ec3b5cad859ad15666874405e8c1bbc1d4

random32: update the net random state on interrupt and activity · torvalds/linux@f227e3e · GitHub
Patch;Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html

[security-announce] openSUSE-SU-2020:1153-1: important: Security update
Mailing List;Third Party Advisory

CVEs referencing this url
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c51f8f88d705e06bd696d7510aff22b33eb8e638

kernel/git/torvalds/linux.git - Linux kernel source tree
Patch;Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00047.html

[security-announce] openSUSE-SU-2020:1236-1: important: Security update
Mailing List;Third Party Advisory

CVEs referencing this url

Products affected by CVE-2020-16166

Debian » Debian Linux » Version: 9.0
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Matching versions
Linux » Linux Kernel
Versions up to, including, (<=) 5.7.11
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Matching versions
Oracle » Sd-wan Edge » Version: 8.2
cpe:2.3:a:oracle:sd-wan_edge:8.2:*:*:*:*:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 14.04 ESM Edition
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 16.04 LTS Edition
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 18.04 LTS Edition
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 20.04 LTS Edition
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
Matching versions
Fedoraproject » Fedora » Version: 31
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
Matching versions
Fedoraproject » Fedora » Version: 32
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
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 » Steelstore Cloud Integrated Storage » Version: N/A
cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*
Matching versions
Netapp » Storagegrid
Versions up to, including, (<=) 9.0.4
cpe:2.3:a:netapp:storagegrid:*:*:*:*:*:*:*:*
Matching versions
Netapp » E-series Santricity Os Controller
Versions from including (>=) 11.0.0 and up to, including, (<=) 11.60.3
cpe:2.3:a:netapp:e-series_santricity_os_controller:*:*:*:*:*:*:*:*
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 » Active Iq Unified Manager » For Vmware Vsphere
Versions from including (>=) 9.5
cpe:2.3:a:netapp:active_iq_unified_manager:*:*:*:*:*:vmware_vsphere:*:*
Matching versions
Netapp » Cloud Volumes Ontap Mediator » Version: N/A
cpe:2.3:a:netapp:cloud_volumes_ontap_mediator:-:*:*:*:*:*:*:*
Matching versions
Netapp » H410c Firmware » Version: N/A
cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*
Matching versions
When used together with: Netapp » H410c » Version: N/A
Netapp » Hci Bootstrap Os » Version: N/A
cpe:2.3:a:netapp:hci_bootstrap_os:-:*:*:*:*:*:*:*
Matching versions