CVE-2021-20291
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- CVE-2021-20291
CVE Details
| Release Date: | 2021-04-01 | |
| Impact: | None | What is this? |
Description
A deadlock vulnerability was found in 'github.com/containers/storage' in versions before 1.28.1. When a container image is processed, each layer is unpacked using tar. If one of those layers is not a valid tar archive this causes an error leading to an unexpected situation where the code indefinitely waits for the tar unpacked stream, which never finishes. An attacker could use this vulnerability to craft a malicious image, which when downloaded and stored by an application using containers/storage, would then cause a deadlock leading to a Denial of Service (DoS).
See more information about CVE-2021-20291 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 metrics
| Base Score: | 6.5 |
| Vector String: | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| Version: | 3.0 |
| Attack Vector: | Network |
| Attack Complexity: | Low |
| Privileges Required: | None |
| User Interaction: | Required |
| Scope: | Unchanged |
| Confidentiality Impact: | None |
| Integrity Impact: | None |
| Availability Impact: | High |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 8 (buildah) | ELSA-2021-4154 | 2021-11-16 |
| Oracle Linux version 8 (cockpit-podman) | ELSA-2021-4154 | 2021-11-16 |
| Oracle Linux version 8 (conmon) | ELSA-2021-4154 | 2021-11-16 |
| Oracle Linux version 8 (container-selinux) | ELSA-2021-4154 | 2021-11-16 |
| Oracle Linux version 8 (containernetworking-plugins) | ELSA-2021-4154 | 2021-11-16 |
| Oracle Linux version 8 (containers-common) | ELSA-2021-4154 | 2021-11-16 |
| Oracle Linux version 8 (criu) | ELSA-2021-4154 | 2021-11-16 |
| Oracle Linux version 8 (crun) | ELSA-2021-4154 | 2021-11-16 |
| Oracle Linux version 8 (fuse-overlayfs) | ELSA-2021-4154 | 2021-11-16 |
| Oracle Linux version 8 (libslirp) | ELSA-2021-4154 | 2021-11-16 |
| Oracle Linux version 8 (oci-seccomp-bpf-hook) | ELSA-2021-4154 | 2021-11-16 |
| Oracle Linux version 8 (podman) | ELSA-2021-4154 | 2021-11-16 |
| Oracle Linux version 8 (python-podman) | ELSA-2021-4154 | 2021-11-16 |
| Oracle Linux version 8 (runc) | ELSA-2021-4154 | 2021-11-16 |
| Oracle Linux version 8 (skopeo) | ELSA-2021-4154 | 2021-11-16 |
| Oracle Linux version 8 (slirp4netns) | ELSA-2021-4154 | 2021-11-16 |
| Oracle Linux version 8 (udica) | ELSA-2021-4154 | 2021-11-16 |
| Oracle Linux version 9 (buildah) | ELSA-2022-8008 | 2022-11-22 |
| Oracle Linux version 9 (podman) | ELSA-2022-7954 | 2022-11-22 |
| Oracle Linux version 9 (skopeo) | ELSA-2022-7955 | 2022-11-22 |
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