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Fencer Intel
medium 6.0

CVE-2020-13401 json

Improper Input Validation in Docker Engine

published 6y ago modified last mo. also GHSA-qrrc-ww9x-r43g , EUVD-2022-1160

cvss
6.0
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.9%
EPSS 2.9% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

Summary

An issue was discovered in Docker Engine before 19.03.11. An attacker in a container, with the CAP_NET_RAW capability, can craft IPv6 router advertisements, and consequently spoof external IPv6 hosts, obtain sensitive information, or cause a denial of service.

Patch / fix

  • go github.com/docker/docker-ce 19.03.11
  • docker engine 19.03.11
  • docker.io Debian 14, Debian 13, Debian 12 19.03.11+dfsg1-1

debian advisories DEBIAN-CVE-2020-13401

  • docker.io Ubuntu 18.04 LTS 20.10.7-0ubuntu1~18.04.1
  • docker.io Ubuntu 20.04 LTS 20.10.7-0ubuntu1~20.04.1

ubuntu advisories UBUNTU-CVE-2020-13401

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • docker-stable SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES for SAP 15 SP3 +12 more 24.0.9_ce-150000.1.25.1
  • golang-github-docker-libnetwork SLE Module for Containers 15 SP2, SLE Module for Containers 15 SP1 0.7.0.1+gitr2902_153d0769a118-4.21.2
  • docker SLE Module for Containers 15 SP2, SLE Module for Containers 15 SP1 19.03.11_ce-6.34.2
  • containerd SLE Module for Containers 15 SP2, SLE Module for Containers 15 SP1 1.2.13-5.22.2
  • docker-runc SLE Module for Containers 15 SP2, SLE Module for Containers 15 SP1 1.0.0rc10+gitr3981_dc9208a3303f-6.38.2
  • golang-github-docker-libnetwork SLE Module for Containers 12 0.7.0.1+gitr2902_153d0769a118-31.1
  • docker SLE Module for Containers 12 19.03.11_ce-98.54.1
  • containerd SLE Module for Containers 12 1.2.13-16.29.1

suse advisories SUSE-SU-2025:03545-1SUSE-SU-2025:03540-1SUSE-SU-2020:1657-2SUSE-SU-2020:1664-1SUSE-SU-2020:1657-1

  • docker-stable openSUSE Tumbleweed 24.0.9_ce-15.1
  • docker openSUSE Tumbleweed 20.10.6_ce-2.1
  • golang-github-docker-libnetwork openSUSE Leap 15.1 0.7.0.1+gitr2902_153d0769a118-lp151.2.12.1
  • docker openSUSE Leap 15.1 19.03.11_ce-lp151.2.18.1
  • containerd openSUSE Leap 15.1 1.2.13-lp151.2.12.1
  • docker-runc openSUSE Leap 15.1 1.0.0rc10+gitr3981_dc9208a3303f-lp151.3.21.1

opensuse advisories openSUSE-SU-2025:15589-1openSUSE-SU-2024:10722-1openSUSE-SU-2020:0846-1

  • docker Alpine 3.24, Alpine 3.23, Alpine 3.22 +10 more 19.03.11-r0

alpine advisories ALPINE-CVE-2020-13401

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Is CVE-2020-13401 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-13401 updated cvss 6.0

docker: IPv6 router advertisements allow for MitM attacks

  • Red Hat Enterprise Linux 7 docker
    affected: workaround, no fix planned “Prevent untrusted, non-privileged containers from running with CAP_NET_RAW.”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.86% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 6.0 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
NVD 2.0 6.0 AV:N/AC:M/Au:S/C:P/I:P/A:P
GitHub 3.1 6.0 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L

Affected packages

ecosystem package affected fixed in
go github.com/docker/docker-ce
<19.03.11
19.03.11

Classification

Weakness
  • CWE-20 Improper Input Validation
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.