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    CVE-2023-23456

    A heap-based buffer overflow issue was discovered in UPX in PackTmt::pack() in p_tmt.cpp file. The flow allows an attacker to cause a denial of service (abort) via a crafted file.

    Published:Jan 12, 2023
    Last Modified:Apr 11, 2025
    EPS:Jan 12, 2023
    EPSS Score:0.0001
    CVSS Score:5.3

    Affected Products

    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Upx
    Product
    Upx

    Exploits

    https://github.com/upx/upx/issues/632https://github.com/upx/upx/issues/632

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    https://bugzilla.redhat.com/show_bug.cgi?id=2160381
    https://github.com/upx/upx/commit/510505a85cbe45e51fbd470f1aa8b02157c429d4
    https://github.com/upx/upx/issues/632
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EL3BVKIGG3SH6I3KPOYQAWCBD4UMPOPI/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TGEP3FBNRZXGLIA2B2ICMB32JVMPREFZ/
    https://bugzilla.redhat.com/show_bug.cgi?id=2160381
    https://github.com/upx/upx/commit/510505a85cbe45e51fbd470f1aa8b02157c429d4
    https://github.com/upx/upx/issues/632
    https://lists.debian.org/debian-lts-announce/2024/12/msg00013.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EL3BVKIGG3SH6I3KPOYQAWCBD4UMPOPI/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TGEP3FBNRZXGLIA2B2ICMB32JVMPREFZ/

    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