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Fix CVE-2016-10094:
http://bugzilla.maptools.org/show_bug.cgi?id=2640
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-10094
https://security-tracker.debian.org/tracker/CVE-2016-10094
2016-12-20 Even Rouault <even.rouault at spatialys.com>
* tools/tiff2pdf.c: avoid potential heap-based overflow in
t2p_readwrite_pdf_image_tile().
Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2640
/cvs/maptools/cvsroot/libtiff/ChangeLog,v <-- ChangeLog
new revision: 1.1199; previous revision: 1.1198
/cvs/maptools/cvsroot/libtiff/tools/tiff2pdf.c,v <-- tools/tiff2pdf.c
new revision: 1.101; previous revision: 1.100
Index: libtiff/tools/tiff2pdf.c
===================================================================
RCS file: /cvs/maptools/cvsroot/libtiff/tools/tiff2pdf.c,v
retrieving revision 1.100
retrieving revision 1.101
diff -u -r1.100 -r1.101
--- libtiff/tools/tiff2pdf.c 20 Dec 2016 17:24:35 -0000 1.100
+++ libtiff/tools/tiff2pdf.c 20 Dec 2016 17:28:17 -0000 1.101
@@ -2895,7 +2895,7 @@
return(0);
}
if(TIFFGetField(input, TIFFTAG_JPEGTABLES, &count, &jpt) != 0) {
- if (count >= 4) {
+ if (count > 4) {
int retTIFFReadRawTile;
/* Ignore EOI marker of JpegTables */
_TIFFmemcpy(buffer, jpt, count - 2);
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