QID 353069

Date Published: 2021-12-14

QID 353069: Amazon Linux Security Advisory for docker : ALAS2DOCKER-2021-002

A flaw was found in docker when it creates network bridges that accept ipv6 router advertisements by default.
This flaw allows an attacker who can execute code in a container to possibly spoof rogue ipv6 router advertisements to perform a man-in-the-middle (mitm) attack against the host network or another container. (
( CVE-2020-13401) a flaw was found in moby.
Moby buildkit calls os.
Openfile with a potentially unsafe qemu-check temporary pathname, constructed with an empty first argument in an ioutil.
Tempdir call. (
( CVE-2020-27534)



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as High - 6 severity.
  • CVSS V2 rated as High - 6 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2DOCKER-2021-002 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 353069

    CVE-2020-27534 | CVE-2020-13401 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2DOCKER-2021-002 Amazon Linux 2 URL Logo alas.aws.amazon.com/AL2/ALASDOCKER-2021-002.html
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