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CVE-2021-32760

Status Candidate

Overview

containerd is a container runtime. A bug was found in containerd versions prior to 1.4.8 and 1.5.4 where pulling and extracting a specially-crafted container image can result in Unix file permission changes for existing files in the host’s filesystem. Changes to file permissions can deny access to the expected owner of the file, widen access to others, or set extended bits like setuid, setgid, and sticky. This bug does not directly allow files to be read, modified, or executed without an additional cooperating process. This bug has been fixed in containerd 1.5.4 and 1.4.8. As a workaround, ensure that users only pull images from trusted sources. Linux security modules (LSMs) like SELinux and AppArmor can limit the files potentially affected by this bug through policies and profiles that prevent containerd from interacting with specific files.

Related Files

Gentoo Linux Security Advisory 202401-31
Posted Jan 31, 2024
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202401-31 - Multiple vulnerabilities have been found in containerd, the worst of which could result in privilege escalation. Versions greater than or equal to 1.6.14 are affected.

tags | advisory, vulnerability
systems | linux, gentoo
advisories | CVE-2021-32760, CVE-2021-41103, CVE-2022-23471, CVE-2022-23648, CVE-2022-24769, CVE-2022-31030
SHA-256 | 340e890e584a72be161ce1a3ca689044b98f4c14c7bc18bb98943aa01d4f4ea1
Download | Favorite | View
Red Hat Security Advisory 2023-5952-01
Posted Oct 20, 2023
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2023-5952-01 - An update is now available for Red Hat OpenShift Service Mesh 2.4 for RHEL 8.

tags | advisory
systems | linux, redhat
advisories | CVE-2021-32760
SHA-256 | 595a887363ddbea80af269e47971e67fee5b17fec786e8b56e788e68da0a834a
Download | Favorite | View
Red Hat Security Advisory 2022-2183-01
Posted May 12, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-2183-01 - Release osp-director-operator images. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service
systems | linux, redhat
advisories | CVE-2018-25032, CVE-2019-11253, CVE-2019-19794, CVE-2020-15257, CVE-2021-29482, CVE-2021-32760, CVE-2022-1154, CVE-2022-1271
SHA-256 | cc75dc0ea9405e57725d05b12cad495f4f0943e8d0b5bc731db97d78ca8246b7
Download | Favorite | View
Ubuntu Security Notice USN-5012-1
Posted Jul 20, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5012-1 - 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.

tags | advisory, remote
systems | linux, ubuntu
advisories | CVE-2021-32760
SHA-256 | b22aac378066db3bff966a442b28fd637c43f1b71476469d8cea5cbdd5432b3c
Download | Favorite | View
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