X11 Server Unauthenticated Access (CVE-1999-0526)

The Information Security Office (ISO) has been scanning for machines running unprotected X11 servers. ISO will disable network access if steps are not taken to enable authentication in a timely manner (typically 72 hours). Please see their description of the issue and possible resolutions below. If you receive a NISC notification regarding this issue and your X11 environment does not match the configurations listed, please feel free to contact the Information Security Office at iso-ir@andrew.cmu.edu or 412.268.2044.


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