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CVE-2022-24778

Status Candidate

Overview

The imgcrypt library provides API exensions for containerd to support encrypted container images and implements the ctd-decoder command line tool for use by containerd to decrypt encrypted container images. The imgcrypt function `CheckAuthorization` is supposed to check whether the current used is authorized to access an encrypted image and prevent the user from running an image that another user previously decrypted on the same system. In versions prior to 1.1.4, a failure occurs when an image with a ManifestList is used and the architecture of the local host is not the first one in the ManifestList. Only the first architecture in the list was tested, which may not have its layers available locally since it could not be run on the host architecture. Therefore, the verdict on unavailable layers was that the image could be run anticipating that image run failure would occur later due to the layers not being available. However, this verdict to allow the image to run enabled other architectures in the ManifestList to run an image without providing keys if that image had previously been decrypted. A patch has been applied to imgcrypt 1.1.4. Workarounds may include usage of different namespaces for each remote user.

Related Files

Ubuntu Security Notice USN-5776-1
Posted Dec 13, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5776-1 - It was discovered that containerd incorrectly handled memory when receiving certain faulty Exec or ExecSync commands. A remote attacker could possibly use this issue to cause a denial of service or crash containerd. It was discovered that containerd incorrectly set up inheritable file capabilities. An attacker could possibly use this issue to escalate privileges inside a container. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2022-23471, CVE-2022-24769, CVE-2022-24778
SHA-256 | a5c37b7f401bff2eeb24eea7d980ad8afb19a337b55dbc18b318e7e8ecd8d937
Red Hat Security Advisory 2022-8827-01
Posted Dec 7, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-8827-01 - Updated images are now available for Red Hat Advanced Cluster Security (RHACS). The updated image includes new features and bug fixes.

tags | advisory
systems | linux, redhat
advisories | CVE-2022-24778, CVE-2022-36056, CVE-2022-42898
SHA-256 | b2990f12fddee6673026ad3d6854e939c3c58799a4b8cdf7662cbeffd7540f1c
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