Red Hat Bugzilla – Bug 1464275
RHEL7 does not support X11 Security Extension, need to enable xcsecurity
Last modified: 2018-04-10 07:51:59 EDT
Description of problem: Clients querying the X11 server for the SECURITY extension are returned an error. The X11 server should support the SECURITY extension until a viable alternative exists. Under RHEL6.5+, customers use the X11 Security Extension to generate authentication tokens for remote clients (xauth generate). It appears that this capability is no longer available under RHEL7, even though the version of Xorg-server is the same. Clients that query the X server for the Security Extension are rewarded with an error (both local and remote clients). It appears that the only available remote client authentication available is via "xhost", which is undesirable for some cuistomers. This capability was also left out of early RHEL6 releases, but reinstated as of 6.5 - https://rhn.redhat.com/errata/RHSA-2013-1620.html Version-Release number of selected component (if applicable): How reproducible: Every time Steps to Reproduce: 1. Run # xdpyinfo -display :0 | grep SECURITY 2. For X11 servers that support the SECURITY extension, you will see output for the match. For RHEL7, there is no match. Additional info: bash-4.2$ xdpyinfo|more name of display: :0 version number: 11.0 vendor string: The X.Org Foundation vendor release number: 11702000 X.Org version: 1.17.2 maximum request size: 16777212 bytes motion buffer size: 256 bitmap unit, bit order, padding: 32, LSBFirst, 32 image byte order: LSBFirst number of supported pixmap formats: 7 supported pixmap formats: depth 1, bits_per_pixel 1, scanline_pad 32 depth 4, bits_per_pixel 8, scanline_pad 32 depth 8, bits_per_pixel 8, scanline_pad 32 depth 15, bits_per_pixel 16, scanline_pad 32 depth 16, bits_per_pixel 16, scanline_pad 32 depth 24, bits_per_pixel 32, scanline_pad 32 depth 32, bits_per_pixel 32, scanline_pad 32 keycode range: minimum 8, maximum 255 focus: window 0x2600008, revert to Parent number of extensions: 29 BIG-REQUESTS Composite DAMAGE DOUBLE-BUFFER DPMS DRI2 GLX Generic Event Extension MIT-SCREEN-SAVER MIT-SHM NV-CONTROL NV-GLX Present RANDR RECORD RENDER SHAPE SYNC X-Resource XC-MISC XFIXES XFree86-DGA XFree86-VidModeExtension XINERAMA XINERAMA XInputExtension XKEYBOARD XTEST XVideo The change is in the .spec file Need to add --enable-xcsecurity
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2018:0736