This script is Copyright (C) 2003-2016 Tenable Network Security, Inc.
The font service running on the remote host has a remote buffer
The remote X Font Service for TrueType (xfstt) is vulnerable to a
remote buffer overflow which may lead to code execution as root or a
denial of service.
See also :
Upgrade to the latest version of xfstt.
Risk factor :
Critical / CVSS Base Score : 10.0
CVSS Temporal Score : 8.3
Public Exploit Available : true