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Upstream fix for bug #603024 is incomplete, tif_ojpeg.c should guard against
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missing strip byte counts too. Testing shows that tiffsplit.c has an issue
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too.
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Filed upstream at http://bugzilla.maptools.org/show_bug.cgi?id=1996
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diff -Naur tiff-3.9.4.orig/libtiff/tif_ojpeg.c tiff-3.9.4/libtiff/tif_ojpeg.c
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--- tiff-3.9.4.orig/libtiff/tif_ojpeg.c 2010-06-08 19:29:51.000000000 -0400
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+++ tiff-3.9.4/libtiff/tif_ojpeg.c 2010-06-22 11:25:17.579807706 -0400
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@@ -1920,6 +1920,10 @@
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sp->in_buffer_file_pos=0;
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else
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{
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+ if (sp->tif->tif_dir.td_stripbytecount == 0) {
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+ TIFFErrorExt(sp->tif->tif_clientdata,sp->tif->tif_name,"Strip byte counts are missing");
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+ return(0);
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+ }
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sp->in_buffer_file_togo=sp->tif->tif_dir.td_stripbytecount[sp->in_buffer_next_strile];
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if (sp->in_buffer_file_togo==0)
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sp->in_buffer_file_pos=0;
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diff -Naur tiff-3.9.4.orig/tools/tiffsplit.c tiff-3.9.4/tools/tiffsplit.c
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--- tiff-3.9.4.orig/tools/tiffsplit.c 2010-06-08 14:50:44.000000000 -0400
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+++ tiff-3.9.4/tools/tiffsplit.c 2010-06-22 12:23:23.258823151 -0400
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@@ -237,7 +237,10 @@
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tstrip_t s, ns = TIFFNumberOfStrips(in);
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uint32 *bytecounts;
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- TIFFGetField(in, TIFFTAG_STRIPBYTECOUNTS, &bytecounts);
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+ if (!TIFFGetField(in, TIFFTAG_STRIPBYTECOUNTS, &bytecounts)) {
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+ fprintf(stderr, "tiffsplit: strip byte counts are missing\n");
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+ return (0);
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+ }
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for (s = 0; s < ns; s++) {
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if (bytecounts[s] > (uint32)bufsize) {
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buf = (unsigned char *)_TIFFrealloc(buf, bytecounts[s]);
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@@ -267,7 +270,10 @@
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ttile_t t, nt = TIFFNumberOfTiles(in);
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uint32 *bytecounts;
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- TIFFGetField(in, TIFFTAG_TILEBYTECOUNTS, &bytecounts);
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+ if (!TIFFGetField(in, TIFFTAG_TILEBYTECOUNTS, &bytecounts)) {
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+ fprintf(stderr, "tiffsplit: tile byte counts are missing\n");
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+ return (0);
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+ }
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for (t = 0; t < nt; t++) {
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if (bytecounts[t] > (uint32) bufsize) {
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buf = (unsigned char *)_TIFFrealloc(buf, bytecounts[t]);
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