CVE-2021-41190 Clarify Content-Type handling in OCI spec

What is CVE-2021-41190?

CVE-2021-41190 is a low-severity vulnerability in Fedoraproject Fedora, published on 17 Nov 2021.

Official description

The OCI Distribution Spec project defines an API protocol to facilitate and standardize the distribution of content. In the OCI Distribution Specification version 1.0.0 and prior, the Content-Type header alone was used to determine the type of document during push and pull operations. Documents that contain both “manifests” and “layers” fields could be interpreted as either a manifest or an index in the absence of an accompanying Content-Type header. If a Content-Type header changed between two pulls of the same digest, a client may interpret the resulting content differently. The OCI Distribution Specification has been updated to require that a mediaType value present in a manifest or index match the Content-Type header used during the push and pull operations. Clients pulling from a registry may distrust the Content-Type header and reject an ambiguous document that contains both “manifests” and “layers” fields or “manifests” and “config” fields if they are unable to update to version 1.0.1 of the spec.

Weakness: CWE-843

Which versions are affected by CVE-2021-41190?

8 open source packages ship an affected version, including github.com/docker/docker, github.com/moby/moby and github.com/opencontainers/distribution-spec. It affects 3 products.

Products include Fedoraproject Fedora, Linuxfoundation Open Container Initiative Distribution Specification, Linuxfoundation Open Container Initiative Image Format Specification.

How do I fix CVE-2021-41190?

Upgrade github.com/docker/docker to a fixed version for your release line: 20.10.11 or 20.10.11+incompatible.

Is CVE-2021-41190 being exploited?

There is no known exploitation of CVE-2021-41190 in the wild and no public exploit code.

Other vulnerabilities in Fedoraproject Fedora

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• CVE-2021-39226 Grafana Authentication Bypass Exploited Critical 9.8
• CVE-2019-5544 VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Exploited Critical 9.8
• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
• CVE-2024-4671 Google Chromium Visuals Use-After-Free Exploited Critical 9.6

All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• GitHub advisory
• How this page is made

Also known as AZL-44865, AZL-44925, CLEANSTART-2025-HQ55158, CLEANSTART-2026-NW72485, GHSA-mc8v-mgrf-8f4m, GHSA-xmmx-7jpf-fx42 and 9 more.