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    CVE-2020-14363

    An integer overflow vulnerability leading to a double-free was found in libX11. This flaw allows a local privileged attacker to cause an application compiled with libX11 to crash, or in some cases, result in arbitrary code execution. The highest threat from this flaw is to confidentiality, integrity as well as system availability.

    Published:Aug 25, 2020
    Last Modified:Nov 21, 2024
    EPS:Sep 11, 2020
    EPSS Score:0.0015
    CVSS Score:7.8

    Affected Products

    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    X.org
    Product
    Libx11

    Exploits

    https://github.com/Ruia-ruia/Exploits/blob/master/x11doublefree.shhttps://github.com/Ruia-ruia/Exploits/blob/master/x11doublefree.sh

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

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    References

    https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14363
    https://github.com/Ruia-ruia/Exploits/blob/master/DFX11details.txt
    https://github.com/Ruia-ruia/Exploits/blob/master/x11doublefree.sh
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7AVXCQOSCAPKYYHFIJAZ6E2C7LJBTLXF/
    https://lists.x.org/archives/xorg-announce/2020-August/003056.html
    https://usn.ubuntu.com/4487-2/
    https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14363
    https://github.com/Ruia-ruia/Exploits/blob/master/DFX11details.txt
    https://github.com/Ruia-ruia/Exploits/blob/master/x11doublefree.sh
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7AVXCQOSCAPKYYHFIJAZ6E2C7LJBTLXF/
    https://lists.x.org/archives/xorg-announce/2020-August/003056.html
    https://usn.ubuntu.com/4487-2/

    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