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Vulnerability of Docker Engine/Moby: read-write access via Remapped Root

Synthesis of the vulnerability 

An attacker can bypass access restrictions via Remapped Root of Docker Engine/Moby, in order to read or alter data.
Impacted products: Debian, Docker CE, IBM API Connect, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES.
Severity of this bulletin: 2/4.
Creation date: 02/02/2021.
Références of this threat: 6427671, CVE-2021-21284, DSA-4865-1, GHSA-7452-xqpj-6rpc, openSUSE-SU-2021:0278-1, openSUSE-SU-2021:0878-1, SUSE-SU-2021:0435-1, SUSE-SU-2021:0445-1, SUSE-SU-2021:1954-1, VIGILANCE-VUL-34455.

Description of the vulnerability 

An attacker can bypass access restrictions via Remapped Root of Docker Engine/Moby, in order to read or alter data.
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This computer weakness alert impacts software or systems such as Debian, Docker CE, IBM API Connect, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES.

Our Vigil@nce team determined that the severity of this weakness note is medium.

The trust level is of type confirmed by the editor, with an origin of user shell.

An attacker with a expert ability can exploit this weakness bulletin.

Solutions for this threat 

Docker Engine/Moby: version 20.10.3.
The version 20.10.3 is fixed:
  https://github.com/moby/moby

Docker Engine/Moby: version 19.03.15.
The version 19.03.15 is fixed:
  https://github.com/moby/moby

Debian 10: new docker.io packages.
New packages are available:
  Debian 10: docker.io 18.09.1+dfsg1-7.1+deb10u3

IBM API Connect: fixed versions for Docker.
Fixed versions are indicated in information sources.

openSUSE Leap 15.2: new containerd packages (12/02/2021).
New packages are available:
  openSUSE Leap 15.2: containerd 1.3.9-lp152.2.3.1, docker 19.03.15_ce-lp152.2.3.1

openSUSE Leap 15.2: new containerd packages (16/06/2021).
New packages are available:
  openSUSE Leap 15.2: containerd 1.4.4-lp152.2.6.1, docker 20.10.6_ce-lp152.2.12.1, runc 1.0.0~rc93-lp152.2.3.1

SUSE LE 12: new containerd packages.
New packages are available:
  SUSE LE 12 RTM-SP5: containerd 1.3.9-16.35.1, docker 19.03.15_ce-98.60.2

SUSE LE 15 RTM-SP3: new containerd packages.
New packages are available:
  SUSE LE 15 RTM: containerd 1.4.4-5.32.1, docker 20.10.6_ce-6.49.3
  SUSE LE 15 SP1: containerd 1.4.4-5.32.1, docker 20.10.6_ce-6.49.3, runc 1.0.0~rc93-1.14.2
  SUSE LE 15 SP2: containerd 1.4.4-5.32.1, docker 20.10.6_ce-6.49.3, runc 1.0.0~rc93-1.14.2
  SUSE LE 15 SP3: containerd 1.4.4-5.32.1, docker 20.10.6_ce-6.49.3, runc 1.0.0~rc93-1.14.2

SUSE LE 15 SP1-3: new containerd packages.
New packages are available:
  SUSE LE 15 SP1: containerd 1.3.9-5.29.3, docker 19.03.15_ce-6.43.3
  SUSE LE 15 SP2: containerd 1.3.9-5.29.3, docker 19.03.15_ce-6.43.3
  SUSE LE 15 SP3: containerd 1.3.9-5.29.3, docker 19.03.15_ce-6.43.3
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