UBUNTU-CVE-2025-62518

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    UBUNTU-CVE-2025-62518

    Published: 21 Oct 2025Last Modified: 20 May 2026
    Upstream:
    CVE-2025-62518

    Summary:

    Details: astral-tokio-tar is a tar archive reading/writing library for async Rust. Versions of astral-tokio-tar prior to 0.5.6 contain a boundary parsing vulnerability that allows attackers to smuggle additional archive entries by exploiting inconsistent PAX/ustar header handling. When processing archives with PAX-extended headers containing size overrides, the parser incorrectly advances stream position based on ustar header size (often zero) instead of the PAX-specified size, causing it to interpret file content as legitimate tar headers. This issue has been patched in version 0.5.6. There are no workarounds.

    References: https://ubuntu.com/security/CVE-2025-62518, https://www.cve.org/CVERecord?id=CVE-2025-62518, https://github.com/astral-sh/tokio-tar/security/advisories/GHSA-j5gw-2vrg-8fgx, https://github.com/astral-sh/tokio-tar/commit/22b3f884adb7a2adf1d3a8d03469533f5cbc8318, https://edera.dev/stories/tarmageddon, https://github.com/edera-dev/cve-tarmageddon, https://github.com/astral-sh/tokio-tar/commit/22b3f884adb7a2adf1d3a8d03469533f5cbc8318, https://github.com/astral-sh/uv/security/advisories/GHSA-w476-p2h3-79g9

    Affected packages

    Package

    Name: rust-astral-tokio-tar

    Purl: pkg:deb/ubuntu/rust-astral-tokio-tar?arch=source&distro=questing

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    0.5.1-1
    0.5.2-2

    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
    UBUNTU-CVE-2025-62518 | CVE-DB