CVE-2020-15157 – containerd can be coerced into leaking credentials during image pull

https://notcve.org/view.php?id=CVE-2020-15157

In containerd (an industry-standard container runtime) before version 1.2.14 there is a credential leaking vulnerability. If a container image manifest in the OCI Image format or Docker Image V2 Schema 2 format includes a URL for the location of a specific image layer (otherwise known as a “foreign layer”), the default containerd resolver will follow that URL to attempt to download it. In v1.2.x but not 1.3.0 or later, the default containerd resolver will provide its authentication credentials if the server where the URL is located presents an HTTP 401 status code along with registry-specific HTTP headers. If an attacker publishes a public image with a manifest that directs one of the layers to be fetched from a web server they control and they trick a user or system into pulling the image, they can obtain the credentials used for pulling that image. In some cases, this may be the user's username and password for the registry. • https://github.com/containerd/containerd/releases/tag/v1.2.14 https://github.com/containerd/containerd/security/advisories/GHSA-742w-89gc-8m9c https://usn.ubuntu.com/4589-1 https://usn.ubuntu.com/4589-2 https://www.debian.org/security/2021/dsa-4865 https://access.redhat.com/security/cve/CVE-2020-15157 https://bugzilla.redhat.com/show_bug.cgi?id=1888248 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-522: Insufficiently Protected Credentials •