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Vulnerability Details CVE-2021-21272

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 artifact provider. For `oras` package users, the workaround is to not use `github.com/deislabs/oras/pkg/content.FileStore`, and use other content stores instead, or pull from a trusted artifact provider.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.002

EPSS Ranking 44.9%

CVSS Severity

CVSS v3 Score 7.7

CVSS v2 Score 4.0

References

Products affected by CVE-2021-21272

Deislabs » Oras » Version: 0.4.0

cpe:2.3:a:deislabs:oras:0.4.0
Deislabs » Oras » Version: 0.5.0

cpe:2.3:a:deislabs:oras:0.5.0
Deislabs » Oras » Version: 0.6.0

cpe:2.3:a:deislabs:oras:0.6.0
Deislabs » Oras » Version: 0.7.0

cpe:2.3:a:deislabs:oras:0.7.0
Deislabs » Oras » Version: 0.8.0

cpe:2.3:a:deislabs:oras:0.8.0
Deislabs » Oras » Version: 0.8.1

cpe:2.3:a:deislabs:oras:0.8.1

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Vulnerable Software

Vulnerability Details CVE-2021-21272

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