UBUNTU-CVE-2020-25697

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    UBUNTU-CVE-2020-25697

    Published: 26 May 2021Last Modified: 22 Apr 2026
    Upstream:

    Summary:

    Details: A privilege escalation flaw was found in the Xorg-x11-server due to a lack of authentication for X11 clients. This flaw allows an attacker to take control of an X application by impersonating the server it is expecting to connect to.

    Affected packages

    Package

    Name: libx11

    Purl: pkg:deb/ubuntu/libx11@2:1.6.2-1ubuntu2.1+esm5?arch=source&distro=esm-infra-legacy/trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    2:1.6.1-1ubuntu1
    2:1.6.1-1ubuntu2
    2:1.6.2-1ubuntu1
    2:1.6.2-1ubuntu2
    2:1.6.2-1ubuntu2.1
    2:1.6.2-1ubuntu2.1+esm1
    2:1.6.2-1ubuntu2.1+esm2
    2:1.6.2-1ubuntu2.1+esm3
    2:1.6.2-1ubuntu2.1+esm4
    2:1.6.2-1ubuntu2.1+esm5

    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
    UBUNTU-CVE-2020-25697 | CVE-DB