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RUSTSEC-2026-0148
No affected components available
Affected versions of boxlite extract OCI image layer tarballs without
fully containing path resolution to the extraction root. A crafted layer
containing a symlink whose target is an absolute on-host path (e.g.
escape -> /tmp) followed by a file entry that resolves through that
symlink (e.g. escape/<path>/pwned.txt) caused the extractor to write
the payload to the host filesystem outside the intended rootfs directory.
The fix in v0.9.0 routes every destructive filesystem operation through a
SafeRoot handle (openat2(RESOLVE_IN_ROOT) on Linux, lexical fallback
elsewhere) so that no tar entry can resolve outside the extraction root,
even with adversarial symlinks placed by earlier entries in the same
layer.
This is a container-escape during image extraction, exploitable by any
user who pulls or loads a malicious OCI image — including via
SimpleBox(rootfs_path=...) from an untrusted local layout.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The vulnerability can affect other systems as well, not just the initial system. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.
Active exploitation in the wild has been confirmed. Immediate patching or mitigation is required.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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