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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWc1djQtNXgzOS12d2h4
Zip slip directory exploit in github.com/deislabs/oras
Impact
The directory support (#55) 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
.
Precisely, the following users of the affected versions are impacted
oras
CLI users who runsoras pull
.- Go programs, which invokes
github.com/deislabs/oras/pkg/content.FileStore
.
Patches
The problem has been patched by the PR linked with this advisory. Users should upgrade their oras
CLI and packages to 0.9.0
.
Workarounds
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.
References
For more information
If you have any questions or comments about this advisory:
- Open an issue on the GitHub repo
- Email the list of maintainers
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWc1djQtNXgzOS12d2h4
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 2 years ago
Updated: over 1 year ago
CVSS Score: 7.7
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
Identifiers: GHSA-g5v4-5x39-vwhx, CVE-2021-21272
References:
- https://github.com/deislabs/oras/security/advisories/GHSA-g5v4-5x39-vwhx
- https://nvd.nist.gov/vuln/detail/CVE-2021-21272
- https://github.com/deislabs/oras/commit/96cd90423303f1bb42bd043cb4c36085e6e91e8e
- https://github.com/deislabs/oras/releases/tag/v0.9.0
- https://pkg.go.dev/github.com/deislabs/oras/pkg/oras
- https://pkg.go.dev/vuln/GO-2021-0099
- https://github.com/advisories/GHSA-g5v4-5x39-vwhx
Blast Radius: 27.0
Affected Packages
go:github.com/deislabs/oras
Dependent packages: 407Dependent repositories: 3,232
Downloads:
Affected Version Ranges: < 0.9.0
Fixed in: 0.9.0
All affected versions: 0.1.0, 0.2.0, 0.3.0, 0.3.1, 0.3.2, 0.3.3, 0.4.0, 0.5.0, 0.6.0, 0.7.0, 0.8.0, 0.8.1
All unaffected versions: 0.9.0, 0.10.0, 0.11.0, 0.11.1, 0.12.0, 0.13.0, 0.14.0, 0.14.1, 0.15.0, 0.15.1, 0.16.0, 1.0.0, 1.0.1, 1.1.0