| Package | Affected versions | Patched versions |
|---|---|---|
| github.com/k3s-io/k3s | ≥ 1.34.0-rc1, < 1.34.6≥ 1.35.0-rc1, < 1.35.3< 1.33.10all versions | 1.34.61.35.31.33.10 |
A path traversal vulnerability exists in K3s's etcd snapshot decompression functionality. Zip files containing archive members with maliciously crafted names (e.g., ../../../../etc/password) can be written to arbitrary locations on the filesystem when an administrator restores the archive as a compressed etcd snapshot.
GODEBUG environment variable:
GODEBUG=zipinsecurepath=0 k3s server --cluster-reset --cluster-reset-restore-path=/path/to/snapshot.zip
.zip, the vulnerable extraction code will not be executed.Administrators should be aware of the cautions noted in the "Security" section of the documentation on Restoring Snapshots.
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