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GHSA-5j5w-g665-5m35

LowCVSS 3 / 10
Published Nov 18, 2021·Last modified Feb 4, 2026
Affected Components(0)

No affected components available

Description

Impact

In the OCI Distribution Specification version 1.0.0 and prior and in the OCI Image Specification version 1.0.1 and prior, manifest and index documents are ambiguous without an accompanying Content-Type HTTP header. Versions of containerd prior to 1.4.12 and 1.5.8 treat the Content-Type header as trusted and deserialize the document according to that header. If the Content-Type header changed between pulls of the same ambiguous document (with the same digest), the document may be interpreted differently, meaning that the digest alone is insufficient to unambiguously identify the content of the image.

Patches

This issue has been fixed in containerd 1.4.12 and 1.5.8. Image pulls for manifests that contain a “manifests” field or indices which contain a “layers” field are rejected.

Workarounds

Ensure you only pull images from trusted sources.

References

https://github.com/opencontainers/distribution-spec/security/advisories/GHSA-mc8v-mgrf-8f4m https://github.com/opencontainers/image-spec/security/advisories/GHSA-77vh-xpmg-72qh

For more information

If you have any questions or comments about this advisory:

Risk Scores
Base Score
3.0

The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker needs basic access or low-level privileges. The attacker needs the user to perform some action, like clicking a link. The vulnerability can affect other systems as well, not just the initial system. There is a low impact on the integrity of the data.

Threat Intelligence
2.8

Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.

EPSS
N/A

Probability that this vulnerability will be exploited in the wild within the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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