The problems are associated with buffer overflows in code that processes user-supplied data. The Xt library problems include those fixed in TOG's recent public patch 3 for X11R6.3. All releases of XFree86 up to and including 3.3.2 patch 1 are vulnerable to some or all of these problems. There is a denial of service problem with xdm which can result in both local and remote users crashing xdm. A source patch for these problems is available now.
Updated binaries are also available.
The updated binaries can be found in the X3322upd.tgz files in the appropriate subdirectories of the XFree86 3.3.2 binaries directory . Information about installing the updated binaries can be found in an updated version of the XFree86 3.3.2 Release Notes . No other systems are affected by this. This bug does not represent a security vulnerability. Note that it is important to follow the instructions in those notes carefully, and that the updated xterm and xdm programs and the X libraries library must be installed to fix the problems.