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CVE-2021-21272

7.7 · HIGH

ORAS is open source software which enables a way to push OCI Artifacts to OCI Conformant registries.

Published Jan 25, 2021CWE-22EPSS 1.45%

Overview

CVE-2021-21272 is a high-severity vulnerability. It was published on January 25, 2021 and has a CVSS 3.1 base score of 7.7 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

ORAS is open source software which enables a way to push OCI Artifacts to OCI Conformant registries. ORAS is both a CLI for initial testing and a Go Module. In ORAS from version 0.4.0 and before version 0.9.0, there is a "zip-slip" vulnerability. The directory support feature allows the downloaded gzipped tarballs to be automatically extracted to the user-specified directory where the tarball can have symbolic links and hard links. A well-crafted tarball or tarballs allow malicious artifact providers linking, writing, or overwriting specific files on the host filesystem outside of the user-specified directory unexpectedly with the same permissions as the user who runs `oras pull`. Users of the affected versions are impacted if they are `oras` CLI users who runs `oras pull`, or if they are Go programs, which invoke `github.com/deislabs/oras/pkg/content.FileStore`. The problem has been fixed in version 0.9.0. For `oras` CLI users, there is no workarounds other than pulling from a trusted

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/deislabs/oras/commit/96cd90423303f1bb42bd043cb4c36085e6e91e8eGitHubgithub.com/deislabs/oras/releases/tag/v0.9.0GitHubgithub.com/deislabs/oras/security/advisories/GHSA-g5v4-5x39-vwhxRefpkg.go.dev/github.com/deislabs/oras/pkg/orasGitHubgithub.com/deislabs/oras/commit/96cd90423303f1bb42bd043cb4c36085e6e91e8eGitHubgithub.com/deislabs/oras/releases/tag/v0.9.0GitHubgithub.com/deislabs/oras/security/advisories/GHSA-g5v4-5x39-vwhxRefpkg.go.dev/github.com/deislabs/oras/pkg/oras

How CyberStrike helps

Frequently asked questions

What is CVE-2021-21272?

CVE-2021-21272 is a high-severity vulnerability. It was published on January 25, 2021 and has a CVSS 3.1 base score of 7.7 (HIGH).

How severe is CVE-2021-21272?

This vulnerability has a CVSS 3.1 base score of 7.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-21272?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-21272?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-21272 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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