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    CVE-2017-13723

    In X.Org Server (aka xserver and xorg-server) before 1.19.4, a local attacker authenticated to the X server could overflow a global buffer, causing crashes of the X server or potentially other problems by injecting large or malformed XKB related atoms and accessing them via xkbcomp.

    Published:Oct 4, 2017
    Last Modified:Aug 29, 2025
    EPS:Oct 9, 2017
    EPSS Score:0.00136
    CVSS Score:7.8

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    X.org
    Product
    X Server

    Exploits

    No exploit reference

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    References

    http://www.debian.org/security/2017/dsa-4000
    http://www.openwall.com/lists/oss-security/2017/10/04/10
    http://www.securityfocus.com/bid/101253
    https://cgit.freedesktop.org/xorg/xserver/commit/?id=94f11ca5cf011ef123bd222cabeaef6f424d76ac
    https://lists.debian.org/debian-lts-announce/2017/11/msg00032.html
    https://lists.x.org/archives/xorg-announce/2017-October/002808.html
    https://security.gentoo.org/glsa/201710-30
    http://www.debian.org/security/2017/dsa-4000
    http://www.openwall.com/lists/oss-security/2017/10/04/10
    http://www.securityfocus.com/bid/101253
    https://cgit.freedesktop.org/xorg/xserver/commit/?id=94f11ca5cf011ef123bd222cabeaef6f424d76ac
    https://lists.debian.org/debian-lts-announce/2017/11/msg00032.html
    https://lists.x.org/archives/xorg-announce/2017-October/002808.html
    https://security.gentoo.org/glsa/201710-30

    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