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    2 vulnerabilities by dignifiedquire

    CVE-2026-53600 (GCVE-0-2026-53600)

    Vulnerability from nvd – Published: 2026-09-02 16:10 – Updated: 2026-09-02 18:57
    VLAI
    Title
    async-tar PAX extension-header desync enables tar entry/content smuggling
    Summary
    async-tar is a tar archive reading/writing library for async Rust. Prior to version 0.6.1, async-tar mis-applies a buffered PAX size extension to an intermediary extension header (a GNU longname L, a GNU longlink K, or a PAX x/g header) instead of to the next file entry. POSIX requires a PAX extended-header record set to describe the next file entry, never an intervening extension header. Because poll_next_raw (src/archive.rs) threads the buffered PAX records into the size computation of whatever raw header it reads next — and that header can be an intermediary L — the stream cursor is advanced by an attacker-chosen amount when the L body is consumed. The parser then desyncs relative to a POSIX-correct tar parser (e.g. GNU tar), reading subsequent bytes at the wrong block boundary. This issue has been patched in version 0.6.1.
    Severity
    6.3 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-02 18:57 UTC
    CWE
    • CWE-20 - Improper Input Validation
    • CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
    Assigner
    References
    Impacted products
    Vendor Product Version
    dignifiedquire async-tar Affected: < 0.6.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-53600 (GCVE-0-2026-53600)

    Vulnerability from cvelistv5 – Published: 2026-09-02 16:10 – Updated: 2026-09-02 18:57
    VLAI
    Title
    async-tar PAX extension-header desync enables tar entry/content smuggling
    Summary
    async-tar is a tar archive reading/writing library for async Rust. Prior to version 0.6.1, async-tar mis-applies a buffered PAX size extension to an intermediary extension header (a GNU longname L, a GNU longlink K, or a PAX x/g header) instead of to the next file entry. POSIX requires a PAX extended-header record set to describe the next file entry, never an intervening extension header. Because poll_next_raw (src/archive.rs) threads the buffered PAX records into the size computation of whatever raw header it reads next — and that header can be an intermediary L — the stream cursor is advanced by an attacker-chosen amount when the L body is consumed. The parser then desyncs relative to a POSIX-correct tar parser (e.g. GNU tar), reading subsequent bytes at the wrong block boundary. This issue has been patched in version 0.6.1.
    Severity
    6.3 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-02 18:57 UTC
    CWE
    • CWE-20 - Improper Input Validation
    • CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
    Assigner
    References
    Impacted products
    Vendor Product Version
    dignifiedquire async-tar Affected: < 0.6.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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