QID 353060

Date Published: 2021-12-14

QID 353060: Amazon Linux Security Advisory for containerd : ALAS2DOCKER-2021-012

A flaw was found in containerd.
Access controls for the shim's api socket verified that a connecting process had an effective uid of 0, but otherwise did not restrict access to the abstract unix domain socket.
This could allow malicious containers running in the same network namespace as the shim, with an effective uid of 0 but otherwise reduced privileges, to cause new processes to be run with elevated privileges.
The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (
( CVE-2020-15257)



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 Medium - 5.2 severity.
  • CVSS V2 rated as Medium - 3.6 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2DOCKER-2021-012 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 353060

    CVE-2020-15257 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2DOCKER-2021-012 Amazon Linux 2 URL Logo alas.aws.amazon.com/AL2/ALASDOCKER-2021-012.html
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