GHSA-7pqw-9j4j-h8q3
extract-zip allows arbitrary file writes through symlink archive entries
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | extract-zip | <= 2.0.1 | no fix listed |
Details
As written in the advisory (Markdown source, shown as plain text).
extract-zip through 2.0.1 containment-checks only the parent directory of each archive entry and never the entry's own final path component, so an archive containing two entries with identical names - a symlink whose target is outside the destination, followed by a regular file - writes through the planted symlink and yields an arbitrary file write outside the destination directory.
References
External links from the advisory. They lead to third-party sites.