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Vulnerability of containerd: information disclosure via Image Pull Credentials

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via Image Pull Credentials of containerd, in order to obtain sensitive information.
Vulnerable systems: SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this threat: 2/4.
Creation date: 16/10/2020.
Références of this weakness: CVE-2020-15157, SUSE-SU-2021:0445-1, USN-4589-1, USN-4589-2, VIGILANCE-VUL-33614.

Description of the vulnerability 

An attacker can bypass access restrictions to data via Image Pull Credentials of containerd, in order to obtain sensitive information.
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This threat alert impacts software or systems such as SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this computer vulnerability bulletin is medium.

The trust level is of type confirmed by the editor, with an origin of internet server.

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

Solutions for this threat 

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

Ubuntu 16.04: new containerd packages.
New packages are available:
  Ubuntu 16.04 LTS: containerd 1.2.6-0ubuntu1~16.04.4

Ubuntu: new docker.io packages.
New packages are available:
  Ubuntu 20.04 LTS: docker.io 19.03.8-0ubuntu1.20.04.1
  Ubuntu 18.04 LTS: docker.io 19.03.6-0ubuntu1~18.04.2
  Ubuntu 16.04 LTS: docker.io 18.09.7-0ubuntu1~16.04.6
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