GHSA-2367-c296-3mp2
Arbitrary file overwrite in tar-rs
Packages
Details
As written in the advisory (Markdown source, shown as plain text).
When unpacking a tarball with the unpack_in-family of functions it's intended that only files within the specified directory are able to be written. Tarballs with hard links or symlinks, however, can be used to overwrite any file on the filesystem. Tarballs can contain multiple entries for the same file. A tarball which first contains an entry for a hard link or symlink pointing to any file on the filesystem will have the link created, and then afterwards if the same file is listed in the tarball the hard link will be rewritten and any file can be rewritten on the filesystem.
References
External links from the advisory. They lead to third-party sites.