Lack of data validation - Path Traversal In astral-tokio-tar
Description
astral-tokio-tar: unpack_in can chmod arbitrary directories by following symlinks
Impact
In versions 0.6.0 and earlier of astral-tokio-tar, the unpack_in API could inadvertently modify the permissions of external (i.e. non-archive) directories outside of the archive. An attacker could use this to contrite a tar archive that maliciously changes directory permissions outside of its intended hierarchy. This flaw only affects directories; individual file permissions cannot be modified via it.
See GHSA-j4xf-2g29-59ph for the equivalent flaw in the tar crate.
Patches
Versions 0.6.1 and newer of astral-tokio-tar use fs::symlink_metdata rather than fs::metadata, avoiding the traversal.
Workarounds
Users are advised to upgrade to version 0.6.1 or newer to address this advisory.
Users should experience no breaking changes as a result of the patch above.
Resources
GHSA-j4xf-2g29-59ph for the original tar vulnerability
Attribution
Reporter: Adam Harvey (@lawngnome)
Mitigation
Update Impact
Minimal update. May introduce new vulnerabilities or breaking changes.
Ecosystem | Package | Affected version | Patched versions |
|---|---|---|---|
 cargo | 0.6.1 |
Aliases
References