4.3

CVE-2020-16166: canonical ubuntu_linux Use of Insufficiently Random Values

CVSS: 4.3v2.0MediumModified
AliasesRHSA-2020:5418RHSA-2020:5428RHSA-2020:5473
Published 30-07-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-16166 is a medium (CVSS 4.3) Use of Insufficiently Random Values vulnerability in canonical ubuntu_linux. EPSS estimates a 5.23% chance of exploitation in the next 30 days, higher than 92.4% of scored vulnerabilities.

Overall risk
18/100
0100
Low · default modelHow is this calculated?
CVSS score
4.3/10
010
Medium · v2.0 (NVD)
EPSS score
5.23%
0%100%
Low · -0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 21 · Related 17
DLA-2385-1DLA-2420-1OPENSUSE-SU-2020:1153-1OPENSUSE-SU-2020:1236-1OPENSUSE-SU-2021:0242-1RHSA-2020:4279

Timeline

  1. 30-07-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

5.23%

Chance of exploitation in the next 30 days

Percentile

92%

Versus all other CVEs

30-day change

-0.04 pp

From 5.27% on 18-09-2026

18-09-202618-10-2026
EPSS score
5.23%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Redhat50 products
  • bpftool< 0:4.18.0-193.37.1.el8_2 | < 0:4.18.0-240.8.1.el8_3
  • bpftool-debuginfo< 0:4.18.0-193.37.1.el8_2 | < 0:4.18.0-240.8.1.el8_3
  • kernel< 0:4.18.0-193.37.1.el8_2 | < 0:4.18.0-240.8.1.el8_3
  • kernel-abi-whitelists< 0:4.18.0-193.37.1.el8_2 | < 0:4.18.0-240.8.1.el8_3
  • kernel-core< 0:4.18.0-193.37.1.el8_2 | < 0:4.18.0-240.8.1.el8_3
Ubuntu39 products
  • linux< 4.15.0-118.119 | < 5.4.0-48.52
  • linux-aws< 4.15.0-1083.87 | < 5.4.0-1025.25
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.3All versions (No fix recorded)
  • linux-aws-5.4< 5.4.0-1025.25~18.04.1
Netapp9 products
Debian2 products
Canonical1 product
Fedoraproject1 product
Linux1 product
Opensuse1 product
Oracle1 product

9 vendors · 105 products

References

34 links
Show all 34 references