CVE-2018-20452

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    CVE-2018-20452

    Published: 25 Dec 2018Last Modified: 8 Jul 2026

    Summary:

    Details: The read_MSAT_body function in ole.c in libxls 1.4.0 has an invalid free that allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted file, because of inconsistent memory management (new versus free) in ole2_read_header in ole.c.

    References: https://security.gentoo.org/glsa/202003-64, https://github.com/evanmiller/libxls/issues/35

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- ab544df742cf50c730d1b6e46c66e44e3e42399f
    Fixed -None

    Affected versions

    1.4.0

    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
    CVE-2018-20452 | CVE-DB