UBUNTU-CVE-2017-2625

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    UBUNTU-CVE-2017-2625

    Published: 27 Jul 2018Last Modified: 22 Apr 2026
    Upstream:
    CVE-2017-2625
    Aliases:
    USN-5690-1

    Summary:

    Details: It was discovered that libXdmcp before 1.1.2 including used weak entropy to generate session keys. On a multi-user system using xdmcp, a local attacker could potentially use information available from the process list to brute force the key, allowing them to hijack other users' sessions.

    References: https://ubuntu.com/security/CVE-2017-2625, https://www.x41-dsec.de/lab/advisories/x41-2017-001-xorg/, http://openwall.com/lists/oss-security/2017/03/01/1, https://ubuntu.com/security/notices/USN-5690-1, https://www.cve.org/CVERecord?id=CVE-2017-2625

    Affected packages

    Package

    Name: libxdmcp

    Purl: pkg:deb/ubuntu/libxdmcp@1:1.1.1-1ubuntu0.1~esm1?arch=source&distro=trusty/esm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1:1.1.1-1ubuntu0.1~esm1

    Affected versions

    1:1.1.1-1

    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