Re: Very large font size crashing X Font Server and Grounding Server to a Halt (was: remote DoS in Mozilla 1.0)

[Billy O'Connor]

   >From billy  Thu Jun 13 12:31:23 2002
   From: Melchior FRANZ <[e-mail]>
   Date:	Thu, 13 Jun 2002 19:17:49 +0200
   X-PGP:	http://www.unet.univie.ac.at/~a8603365/melchior.franz
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   * Melchior FRANZ -- Thursday 13 June 2002 18:49:
   > * [e-mail] -- Thursday 13 June 2002 18:33:
   > > It resulted in an almost infinite size malloc() request.
   > 
   > No. AFAIK it is caused in the file xc/lib/font/Type1/t1font.c
							  ^^^^^^^^
   This should have been t1func.c, sorry.

t1func.c ?

This bit here, in Type1OpenScalable()?

  /* heuristic for "maximum" size of pool we'll need: */
  size = 200000 + 120 *
  (int)hypot(vals->pixel_matrix[2],
	     vals->pixel_matrix[3])
	* sizeof(short);
  if (size < 0 || NULL == (pool = (long *)xalloc(size))) {
      xfree(cid);
      DestroyFontRec(pFont);
  return AllocError;
}