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Sicherheit: Fehlerhafte Zugriffsrechte in containerd
Aktuelle Meldungen Distributionen
Name: Fehlerhafte Zugriffsrechte in containerd
ID: USN-5012-1
Distribution: Ubuntu
Plattformen: Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 20.10, Ubuntu 21.04
Datum: Di, 20. Juli 2021, 22:53
Referenzen: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32760
Applikationen: containerd

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From: Marc Deslauriers <marc.deslauriers@canonical.com>
Reply-To: Ubuntu Security <security@ubuntu.com>
To: "ubuntu-security-announce@lists.ubuntu.com"
<ubuntu-security-announce@lists.ubuntu.com>
Message-ID: <70e79bce-114b-95f2-cb39-c54e5ded32ab@canonical.com>
Subject: [USN-5012-1] containerd vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-5012-1
July 20, 2021

containerd vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 21.04
- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

containerd could be made to overwrite file permissions.

Software Description:
- containerd: daemon to control runC

Details:

It was discovered that containerd incorrectly handled file permission
changes. If a user or automated system were tricked into launching a
specially crafted container image, a remote attacker could change
permissions on files on the host filesystem and possibly escalate
privileges.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 21.04:
containerd 1.5.2-0ubuntu1~21.04.2

Ubuntu 20.10:
containerd 1.5.2-0ubuntu1~20.10.2

Ubuntu 20.04 LTS:
containerd 1.5.2-0ubuntu1~20.04.2

Ubuntu 18.04 LTS:
containerd 1.5.2-0ubuntu1~18.04.2

After a standard system update you need to restart containerd to make
all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-5012-1
CVE-2021-32760

Package Information:
https://launchpad.net/ubuntu/+source/containerd/1.5.2-0ubuntu1~21.04.2
https://launchpad.net/ubuntu/+source/containerd/1.5.2-0ubuntu1~20.10.2
https://launchpad.net/ubuntu/+source/containerd/1.5.2-0ubuntu1~20.04.2
https://launchpad.net/ubuntu/+source/containerd/1.5.2-0ubuntu1~18.04.2


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