RUSTSEC-2018-0002

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Source
https://rustsec.org/advisories/RUSTSEC-2018-0002
Import Source
https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2018-0002.json
JSON Data
https://api.osv.dev/v1/vulns/RUSTSEC-2018-0002
Aliases
Published
2018-06-29T12:00:00Z
Modified
2023-11-08T04:00:13.305474Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
Links in archives can overwrite any existing file
Details

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.

This has been fixed in https://github.com/alexcrichton/tar-rs/pull/156 and is published as tar 0.4.16. Thanks to Max Justicz for discovering this and emailing about the issue!

Database specific 
{
    "license": "CC0-1.0"
}
References

Affected packages

crates.io / tar

Package

Name
tar
View open source insights on deps.dev
Purl
pkg:cargo/tar

Affected ranges

Type
SEMVER
Events
Introduced
0.0.0-0
Fixed
0.4.16

Ecosystem specific 

{
    "affected_functions": null,
    "affects": {
        "os": [],
        "functions": [],
        "arch": []
    }
}

Database specific 

{
    "cvss": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
    "informational": null,
    "categories": []
}