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Copied from Debian
Description: Buffer overflow in gif2tiff
Bug: http://bugzilla.maptools.org/show_bug.cgi?id=2450
Bug-Debian: http://bugs.debian.org/719303
Index: tiff-4.0.3/tools/gif2tiff.c
===================================================================
--- tiff-4.0.3.orig/tools/gif2tiff.c 2013-08-22 11:46:11.960846910 -0400
+++ tiff-4.0.3/tools/gif2tiff.c 2013-08-22 11:46:11.956846910 -0400
@@ -333,6 +333,8 @@
int status = 1;
datasize = getc(infile);
+ if (datasize > 12)
+ return 0;
clear = 1 << datasize;
eoi = clear + 1;
avail = clear + 2;
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