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    CVE-2016-6321

    Directory traversal vulnerability in the safer_name_suffix function in GNU tar 1.14 through 1.29 might allow remote attackers to bypass an intended protection mechanism and write to arbitrary files via vectors related to improper sanitization of the file_name parameter, aka POINTYFEATHER.

    Published:Oct 27, 2016
    Last Modified:Aug 6, 2025
    EPS:Dec 9, 2016
    EPSS Score:0.12725
    CVSS Score:7.5

    Affected Products

    Vendor
    Gnu
    Product
    Tar

    Exploits

    http://packetstormsecurity.com/files/139370/GNU-tar-1.29-Extract-Pathname-Bypass.htmlhttp://packetstormsecurity.com/files/139370/GNU-tar-1.29-Extract-Pathname-Bypass.html

    Related CVEs

    CVE-2026-18508 (CVSS 4.4) — A flaw was found in GNU tar. When extracting an archive with the --one-top-level option, hardlink targets are …
    CVE-2026-18477 (CVSS 4.4) — A TOCTOU (Time-of-Check Time-of-Use) vulnerability in GNU tar's incremental dumpdir 'X' rename handling allows…
    CVE-2026-5704 (CVSS 5) — A flaw was found in tar. A remote attacker could exploit this vulnerability by crafting a malicious archive, l…
    CVE-2025-45582 (CVSS 4.1) — GNU Tar through 1.35 allows file overwrite via directory traversal in crafted TAR archives, with a certain two…
    CVE-2023-39804 (CVSS 6.2) — In GNU tar before 1.35, mishandled extension attributes in a PAX archive can lead to an application crash in x…
    CVE-2022-48303 (CVSS 5.5) — GNU Tar through 1.34 has a one-byte out-of-bounds read that results in use of uninitialized memory for a condi…
    CVE-2021-20193 (CVSS 3.3) — A flaw was found in the src/list.c of tar 1.33 and earlier. This flaw allows an attacker who can submit a craf…
    CVE-2019-9923 (CVSS 7.5) — pax_decode_header in sparse.c in GNU Tar before 1.32 had a NULL pointer dereference when parsing certain archi…
    CVE-2018-20482 (CVSS 4.7) — GNU Tar through 1.30, when --sparse is used, mishandles file shrinkage during read access, which allows local …
    CVE-2010-0624 (CVSS 6.8) — Heap-based buffer overflow in the rmt_read__ function in lib/rtapelib.c in the rmt client functionality in GNU…

    References

    http://git.savannah.gnu.org/cgit/tar.git/commit/?id=7340f67b9860ea0531c1450e5aa261c50f67165d
    http://lists.gnu.org/archive/html/bug-tar/2016-10/msg00016.html
    http://packetstormsecurity.com/files/139370/GNU-tar-1.29-Extract-Pathname-Bypass.html
    http://seclists.org/fulldisclosure/2016/Oct/102
    http://seclists.org/fulldisclosure/2016/Oct/96
    http://www.debian.org/security/2016/dsa-3702
    http://www.securityfocus.com/bid/93937
    http://www.ubuntu.com/usn/USN-3132-1
    https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
    https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
    https://security.gentoo.org/glsa/201611-19
    https://sintonen.fi/advisories/tar-extract-pathname-bypass.proper.txt
    http://git.savannah.gnu.org/cgit/tar.git/commit/?id=7340f67b9860ea0531c1450e5aa261c50f67165d
    http://lists.gnu.org/archive/html/bug-tar/2016-10/msg00016.html
    http://packetstormsecurity.com/files/139370/GNU-tar-1.29-Extract-Pathname-Bypass.html
    http://seclists.org/fulldisclosure/2016/Oct/102
    http://seclists.org/fulldisclosure/2016/Oct/96
    http://www.debian.org/security/2016/dsa-3702
    http://www.securityfocus.com/bid/93937
    http://www.ubuntu.com/usn/USN-3132-1
    https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
    https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
    https://security.gentoo.org/glsa/201611-19
    https://sintonen.fi/advisories/tar-extract-pathname-bypass.proper.txt

    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