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    CVE-2020-14347

    A flaw was found in the way xserver memory was not properly initialized. This could leak parts of server memory to the X client. In cases where Xorg server runs with elevated privileges, this could result in possible ASLR bypass. Xorg-server before version 1.20.9 is vulnerable.

    Published:Jul 31, 2020
    Last Modified:Aug 29, 2025
    EPS:Aug 5, 2020
    EPSS Score:0.0002
    CVSS Score:5.5

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    X.org
    Product
    X Server

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-665 Improper Initialization

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    References

    http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00066.html
    http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00075.html
    https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14347
    https://lists.debian.org/debian-lts-announce/2020/08/msg00057.html
    https://lists.x.org/archives/xorg-announce/2020-July/003051.html
    https://security.gentoo.org/glsa/202012-01
    https://usn.ubuntu.com/4488-1/
    https://usn.ubuntu.com/4488-2/
    https://www.debian.org/security/2020/dsa-4758
    https://www.openwall.com/lists/oss-security/2020/07/31/2
    http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00066.html
    http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00075.html
    https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14347
    https://lists.debian.org/debian-lts-announce/2020/08/msg00057.html
    https://lists.x.org/archives/xorg-announce/2020-July/003051.html
    https://security.gentoo.org/glsa/202012-01
    https://usn.ubuntu.com/4488-1/
    https://usn.ubuntu.com/4488-2/
    https://www.debian.org/security/2020/dsa-4758
    https://www.openwall.com/lists/oss-security/2020/07/31/2

    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