1 files changed, 77 insertions, 0 deletions
diff --git a/abs/core/libtiff/tiff-3.9.7-CVE-2012-4564.patch b/abs/core/libtiff/tiff-3.9.7-CVE-2012-4564.patch
new file mode 100644
index 0000000..98a6e6c
--- /dev/null
+++ b/abs/core/libtiff/tiff-3.9.7-CVE-2012-4564.patch
@@ -0,0 +1,77 @@
+Upstream patch for CVE-2012-4564.
+
+
+diff -Naur tiff-3.9.4.orig/tools/ppm2tiff.c tiff-3.9.4/tools/ppm2tiff.c
+--- tiff-3.9.4.orig/tools/ppm2tiff.c	2010-06-08 14:50:44.000000000 -0400
++++ tiff-3.9.4/tools/ppm2tiff.c	2012-12-10 16:16:05.154045877 -0500
+@@ -68,6 +68,17 @@
+ 	exit(-2);
+ }
+ 
++static tsize_t
++multiply_ms(tsize_t m1, tsize_t m2)
++{
++	tsize_t bytes = m1 * m2;
++
++	if (m1 && bytes / m1 != m2)
++		bytes = 0;
++
++	return bytes;
++}
++
+ int
+ main(int argc, char* argv[])
+ {
+@@ -85,6 +96,7 @@
+ 	int c;
+ 	extern int optind;
+ 	extern char* optarg;
++	tsize_t scanline_size;
+ 
+ 	if (argc < 2) {
+ 	    fprintf(stderr, "%s: Too few arguments\n", argv[0]);
+@@ -217,7 +229,8 @@
+ 	}
+ 	switch (bpp) {
+ 		case 1:
+-			linebytes = (spp * w + (8 - 1)) / 8;
++			/* if round-up overflows, result will be zero, OK */
++			linebytes = (multiply_ms(spp, w) + (8 - 1)) / 8;
+ 			if (rowsperstrip == (uint32) -1) {
+ 				TIFFSetField(out, TIFFTAG_ROWSPERSTRIP, h);
+ 			} else {
+@@ -226,15 +239,31 @@
+ 			}
+ 			break;
+ 		case 8:
+-			linebytes = spp * w;
++			linebytes = multiply_ms(spp, w);
+ 			TIFFSetField(out, TIFFTAG_ROWSPERSTRIP,
+ 			    TIFFDefaultStripSize(out, rowsperstrip));
+ 			break;
+ 	}
+-	if (TIFFScanlineSize(out) > linebytes)
++	if (linebytes == 0) {
++		fprintf(stderr, "%s: scanline size overflow\n", infile);
++		(void) TIFFClose(out);
++		exit(-2);					
++	}
++	scanline_size = TIFFScanlineSize(out);
++	if (scanline_size == 0) {
++		/* overflow - TIFFScanlineSize already printed a message */
++		(void) TIFFClose(out);
++		exit(-2);					
++	}
++	if (scanline_size < linebytes)
+ 		buf = (unsigned char *)_TIFFmalloc(linebytes);
+ 	else
+-		buf = (unsigned char *)_TIFFmalloc(TIFFScanlineSize(out));
++		buf = (unsigned char *)_TIFFmalloc(scanline_size);
++	if (buf == NULL) {
++		fprintf(stderr, "%s: Not enough memory\n", infile);
++		(void) TIFFClose(out);
++		exit(-2);
++	}
+ 	if (resolution > 0) {
+ 		TIFFSetField(out, TIFFTAG_XRESOLUTION, resolution);
+ 		TIFFSetField(out, TIFFTAG_YRESOLUTION, resolution);