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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade libxdmcp | Aug 22, 2024 | Jul 27, 2018 |
| Centos_linux | — | Upgrade libevdev-debuginfoUpgrade libXiUpgrade libepoxy-develUpgrade libvdpau-develUpgrade mesa-libglapiUpgrade mesa-libOSMesaUpgrade libXaw-develUpgrade libevdevUpgrade libdrm-develUpgrade mesa-libgbm-develUpgrade libxkbcommon-debuginfoUpgrade libXcursor-debuginfoUpgrade libX11Upgrade libXcursorUpgrade libXdmcp-debuginfoUpgrade xorg-x11-proto-develUpgrade libXxf86vm-debuginfoUpgrade vulkan-develUpgrade libICE-debuginfoUpgrade libXvUpgrade libICEUpgrade mesa-vulkan-driversUpgrade libevdev-utilsUpgrade libwacom-debuginfoUpgrade libXfixesUpgrade libXv-develUpgrade mesa-private-llvm-develUpgrade mesa-libEGLUpgrade libXvMC-develUpgrade libXrandr-develUpgrade mesa-libGLUpgrade xkeyboard-config-develUpgrade libXaw-debuginfoUpgrade libXfont-develUpgrade libXpmUpgrade mesa-private-llvm-debuginfoUpgrade libdrmUpgrade libxkbcommon-x11Upgrade mesa-libEGL-develUpgrade libXrandrUpgrade libxkbfileUpgrade libepoxy-debuginfoUpgrade libxcbUpgrade mesa-libGLESUpgrade drm-utilsUpgrade libevdev-develUpgrade mesa-libGLES-develUpgrade libXi-debuginfoUpgrade libXcursor-develUpgrade libepoxyUpgrade libXfont2-develUpgrade mesa-debuginfoUpgrade libXfont-debuginfoUpgrade libXfixes-debuginfoUpgrade libXpm-develUpgrade libxcb-docUpgrade mesa-private-llvmUpgrade libxkbcommonUpgrade vulkan-debuginfoUpgrade libXfixes-develUpgrade libXawUpgrade libfontenc-develUpgrade xcb-protoUpgrade mesa-libGL-develUpgrade libfontencUpgrade libX11-commonUpgrade libXdmcp-develUpgrade libinput-debuginfoUpgrade libX11-develUpgrade libXvMC-debuginfoUpgrade mesa-libOSMesa-develUpgrade mesa-libxatracker-develUpgrade libXfont2Upgrade libXfontUpgrade libwacom-develUpgrade libX11-debuginfoUpgrade libxkbcommon-x11-develUpgrade libvdpauUpgrade libXxf86vm-develUpgrade libinputUpgrade libXtst-debuginfoUpgrade libXfont2-debuginfoUpgrade libXt-develUpgrade libXtUpgrade libXt-debuginfoUpgrade libXtst-develUpgrade libxkbfile-develUpgrade libvdpau-docsUpgrade libvdpau-debuginfoUpgrade libdrm-debuginfoUpgrade libwacomUpgrade libXrenderUpgrade mesa-dri-driversUpgrade libXvMCUpgrade mesa-filesystemUpgrade libXdmcpUpgrade libXxf86vmUpgrade libXrender-debuginfoUpgrade vulkan-filesystemUpgrade libXi-develUpgrade libXrender-develUpgrade libXv-debuginfoUpgrade libXrandr-debuginfoUpgrade libICE-develUpgrade libfontenc-debuginfoUpgrade xkeyboard-configUpgrade mesa-libxatrackerUpgrade libxcb-develUpgrade libXtstUpgrade mesa-libgbmUpgrade libinput-develUpgrade libxkbfile-debuginfoUpgrade libwacom-dataUpgrade vulkanUpgrade libxkbcommon-develUpgrade libXpm-debuginfoUpgrade libxcb-debuginfo | Aug 28, 2019 | Jul 27, 2018 |
| Debian | — | Upgrade libxdmcp | Nov 27, 2019 | Jul 27, 2018 |
| Freebsd | — | Upgrade libXdmcp | Apr 1, 2019 | Mar 21, 2019 |
| Gentoo Linux | — | Upgrade x11-libs/libXi.Upgrade x11-libs/libXfixes.Upgrade x11-libs/libXv.Upgrade x11-base/xorg-server.Upgrade x11-libs/libXdmcp.Upgrade x11-libs/libXrender.Upgrade x11-libs/libXrandr.Upgrade x11-libs/libICE. | Oct 30, 2017 | Apr 10, 2017 |
| Huawei Euleros 2_0_sp1 | — | — | Jan 18, 2018 | Feb 28, 2017 |
| Huawei Euleros 2_0_sp2 | — | — | Jan 18, 2018 | Feb 28, 2017 |
| Oracle_linux | — | Upgrade libX11Upgrade mesa-libgbmUpgrade mesa-libOSMesaUpgrade vulkan-filesystemUpgrade libXdmcp-develUpgrade libxkbcommon-x11-develUpgrade libXtst-develUpgrade libXtUpgrade libXiUpgrade libfontencUpgrade libXfont-develUpgrade libinput-develUpgrade libX11-commonUpgrade libXcursorUpgrade libXvMC-develUpgrade vulkan-develUpgrade mesa-libEGL-develUpgrade libXrenderUpgrade mesa-libOSMesa-develUpgrade vulkanUpgrade libwacomUpgrade libXfontUpgrade libXv-develUpgrade libevdev-develUpgrade mesa-libEGLUpgrade mesa-libgbm-develUpgrade libXi-develUpgrade libepoxy-develUpgrade xkeyboard-config-develUpgrade libxcb-docUpgrade xorg-x11-proto-develUpgrade libXawUpgrade libXrender-develUpgrade mesa-filesystemUpgrade mesa-libGLES-develUpgrade mesa-libGL-develUpgrade libvdpauUpgrade libXpmUpgrade mesa-libGLUpgrade libXxf86vm-develUpgrade libvdpau-develUpgrade libXfixes-develUpgrade libICEUpgrade libXfixesUpgrade libwacom-develUpgrade libICE-develUpgrade libxkbcommon-x11Upgrade libevdev-utilsUpgrade libXtstUpgrade libdrmUpgrade libXaw-develUpgrade libfontenc-develUpgrade mesa-dri-driversUpgrade mesa-libxatrackerUpgrade libxcb-develUpgrade libXfont2Upgrade libxcbUpgrade libevdevUpgrade libxkbfile-develUpgrade drm-utilsUpgrade mesa-private-llvm-develUpgrade mesa-libglapiUpgrade libXfont2-develUpgrade libXvMCUpgrade libxkbcommon-develUpgrade libXdmcpUpgrade libwacom-dataUpgrade libvdpau-docsUpgrade mesa-vulkan-driversUpgrade mesa-private-llvmUpgrade libXrandr-develUpgrade mesa-libGLESUpgrade libepoxyUpgrade libXcursor-develUpgrade libXrandrUpgrade libXt-develUpgrade xcb-protoUpgrade libX11-develUpgrade libinputUpgrade mesa-libxatracker-develUpgrade xkeyboard-configUpgrade libxkbcommonUpgrade libXpm-develUpgrade libXxf86vmUpgrade libdrm-develUpgrade libxkbfileUpgrade libXv | Aug 8, 2017 | Feb 28, 2017 |
| Redhat_linux | — | Upgrade libICE-develUpgrade libxkbfile-debuginfoUpgrade mesa-libxatracker-develUpgrade libXfixes-debuginfoUpgrade libxkbfileUpgrade libXxf86vmUpgrade libXvUpgrade libvdpau-debuginfoUpgrade libXv-develUpgrade xkeyboard-configUpgrade libXtstUpgrade libinput-develUpgrade libdrm-develUpgrade mesa-libglapiUpgrade libfontenc-debuginfoUpgrade libxkbfile-develUpgrade libXcursor-develUpgrade mesa-libGLUpgrade libevdev-utilsUpgrade libwacom-dataUpgrade libevdev-debuginfoUpgrade libXaw-develUpgrade libwacom-debuginfoUpgrade libevdevUpgrade libfontenc-develUpgrade libXdmcp-debuginfoUpgrade libxkbcommon-debuginfoUpgrade libxcb-develUpgrade libinputUpgrade libXcursor-debuginfoUpgrade libxcb-debuginfoUpgrade vulkanUpgrade mesa-vulkan-driversUpgrade drm-utilsUpgrade libxcb-docUpgrade libvdpau-docsUpgrade libXt-develUpgrade libxcbUpgrade libxkbcommon-develUpgrade mesa-libxatrackerUpgrade libXiUpgrade mesa-libEGL-develUpgrade mesa-dri-driversUpgrade libxkbcommonUpgrade mesa-private-llvm-develUpgrade libXrandrUpgrade libX11-develUpgrade mesa-private-llvmUpgrade libXpm-develUpgrade libXfont2Upgrade libXpm-debuginfoUpgrade mesa-libGLESUpgrade libXv-debuginfoUpgrade libXdmcpUpgrade libepoxyUpgrade mesa-libGLES-develUpgrade libXfont-debuginfoUpgrade libXvMCUpgrade libXtst-develUpgrade libXdmcp-develUpgrade libX11-commonUpgrade libXt-debuginfoUpgrade vulkan-debuginfoUpgrade mesa-libGL-develUpgrade mesa-libgbmUpgrade libXfont2-develUpgrade libwacomUpgrade libevdev-develUpgrade vulkan-filesystemUpgrade libXtst-debuginfoUpgrade libXi-develUpgrade libXfont2-debuginfoUpgrade libXcursorUpgrade mesa-filesystemUpgrade libXrandr-debuginfoUpgrade libICEUpgrade libXvMC-develUpgrade mesa-private-llvm-debuginfoUpgrade libXrender-debuginfoUpgrade libdrm-debuginfoUpgrade libxkbcommon-x11-develUpgrade libXtUpgrade libXfontUpgrade libXaw-debuginfoUpgrade libvdpau-develUpgrade libXawNo solution existsUpgrade mesa-libOSMesa-develUpgrade libepoxy-develUpgrade libXvMC-debuginfoUpgrade libdrmUpgrade mesa-libgbm-develUpgrade libwacom-develUpgrade libXi-debuginfoUpgrade xorg-x11-proto-develUpgrade libinput-debuginfoUpgrade libXpmUpgrade libXrenderUpgrade mesa-libOSMesaUpgrade xcb-protoUpgrade libvdpauUpgrade libXrender-develUpgrade libxkbcommon-x11Upgrade libXfixes-develUpgrade libXxf86vm-develUpgrade libX11-debuginfoUpgrade libXfixesUpgrade mesa-debuginfoUpgrade libXfont-develUpgrade mesa-libEGLUpgrade libXrandr-develUpgrade xkeyboard-config-develUpgrade libfontencUpgrade libICE-debuginfoUpgrade libX11Upgrade libepoxy-debuginfoUpgrade libXxf86vm-debuginfoUpgrade vulkan-devel | Aug 5, 2017 | Jul 6, 2017 |
| Suse | — | Upgrade xorg-x11-libXdmcp-32bitUpgrade xorg-x11-libXdmcpUpgrade libXdmcp6-32bitUpgrade xorg-x11-libXdmcp-devel-32bitUpgrade xorg-x11-libXdmcp-develUpgrade xorg-x11-libXdmcp-x86Upgrade libXdmcp6Upgrade libXdmcp-devel | Jul 6, 2017 | Jul 6, 2017 |
| Ubuntu | — | Upgrade libxdmcp6 (Ubuntu Pro) | Oct 20, 2022 | Jul 6, 2017 |
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