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    CVE-2017-2625

    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.

    Published:Feb 28, 2017
    Last Modified:Nov 21, 2024
    EPS:Jul 27, 2018
    EPSS Score:0.00034
    CVSS Score:6.5

    Affected Products

    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Desktop
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Server Aus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Eus
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation
    Vendor
    X.org
    Product
    Libxdmcp

    Exploits

    https://www.x41-dsec.de/lab/advisories/x41-2017-001-xorg/https://www.x41-dsec.de/lab/advisories/x41-2017-001-xorg/

    Common Weakness Enumeration

    CWE-331 Insufficient Entropy

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-59 Session Credential Falsification through Prediction

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    References

    http://www.securityfocus.com/bid/96480
    http://www.securitytracker.com/id/1037919
    https://access.redhat.com/errata/RHSA-2017:1865
    https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2625
    https://cgit.freedesktop.org/xorg/lib/libXdmcp/commit/?id=0554324ec6bbc2071f5d1f8ad211a1643e29eb1f
    https://lists.debian.org/debian-lts-announce/2019/11/msg00024.html
    https://security.gentoo.org/glsa/201704-03
    https://www.x41-dsec.de/lab/advisories/x41-2017-001-xorg/
    http://www.securityfocus.com/bid/96480
    http://www.securitytracker.com/id/1037919
    https://access.redhat.com/errata/RHSA-2017:1865
    https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2625
    https://cgit.freedesktop.org/xorg/lib/libXdmcp/commit/?id=0554324ec6bbc2071f5d1f8ad211a1643e29eb1f
    https://lists.debian.org/debian-lts-announce/2019/11/msg00024.html
    https://security.gentoo.org/glsa/201704-03
    https://www.x41-dsec.de/lab/advisories/x41-2017-001-xorg/

    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