RUSTSEC-2018-0002

    Dashboard / Vulnerabilities / RUSTSEC-2018-0002

    RUSTSEC-2018-0002

    Published: 29 Jun 2018Last Modified: 8 Nov 2023

    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!

    References: https://crates.io/crates/tar, https://rustsec.org/advisories/RUSTSEC-2018-0002.html, https://github.com/alexcrichton/tar-rs/pull/156

    Affected packages

    Package

    Name: tar

    Purl: pkg:cargo/tar

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0.0.0-0
    Fixed -0.4.16

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High