MHonArc Security Advisory: XSS vulnerability

Description:
-----------
  A Cross Site Scripting (XSS) vulnerability exists for MHonArc
  versions 2.5.12 and earlier.  XSS can be introduced in
  message headers by carefully crafted message field labels.  For
  example:

      To: <someone(_at_)example(_dot_)com>
      From: <hacker(_at_)example(_dot_)com>
      Header<SCRIPT>hello</SCRIPT>def: whatever

Solution:
--------
  Upgrade to v2.5.13.

Work-Arounds:
------------
  Remove the use of '-extra-' in the FIELDORDER resource.  If removed,
  only the field labels given in FIELDORDER will be display on converted
  message pages.

Acknowledgements:
----------------
  Thanks to Steven M. Christey for discovering this problem.

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