Medium: docker

Issue Overview:

A flaw was found in the userns-remap feature of Docker. The root user in the remapped namespace can modify files under /var/lib/docker/<remapping>, leading to possible privilege escalation to the root user in the host. The highest threat from this vulnerability is to data integrity. (CVE-2021-21284)

A flaw was found in Docker. Pulling an intentionally malformed Docker image manifest could lead to a crash of the dockerd daemon, resulting in a denial of service. The highest threat from this vulnerability is to system availability. (CVE-2021-21285)

Affected Packages:

docker

Issue Correction:
Run yum update docker to update your system.

New Packages:

src:  
    docker-20.10.7-2.69.amzn1.src  
  
x86_64:  
    docker-20.10.7-2.69.amzn1.x86_64  
    docker-debuginfo-20.10.7-2.69.amzn1.x86_64  

Additional References

Red Hat: CVE-2021-21284, CVE-2021-21285

Mitre: CVE-2021-21284, CVE-2021-21285