main/tiff: sec fixes from upstream (CVE-2012-4447,CVE-2012-4564,CVE-2013-1960,CVE-2013-1961)

ref #2203
fixes #2204

5 files changed, 1050 insertions, 2 deletions

diff --git a/main/tiff/APKBUILD b/main/tiff/APKBUILD
index 97aa351524..1785706348 100644
--- a/main/tiff/APKBUILD
+++ b/main/tiff/APKBUILD
@@ -2,7 +2,7 @@
 # Maintainer: Michael Mason <ms13sp@gmail.com>
 pkgname=tiff
 pkgver=4.0.3
-pkgrel=0
+pkgrel=1
 pkgdesc="Provides support for the Tag Image File Format or TIFF"
 url="http://www.libtiff.org/"
 arch="all"
@@ -12,6 +12,10 @@ depends_dev="zlib-dev libjpeg-turbo-dev"
 makedepends="libtool autoconf automake $depends_dev"
 subpackages="$pkgname-doc $pkgname-dev $pkgname-tools"
 source="ftp://ftp.remotesensing.org/pub/libtiff/$pkgname-$pkgver.tar.gz
+	libtiff-CVE-2012-4447.patch
+	libtiff-CVE-2012-4564.patch
+	libtiff-CVE-2013-1960.patch
+	libtiff-CVE-2013-1961.patch
 	"
 	
 _builddir="$srcdir"/$pkgname-$pkgver
@@ -54,4 +58,18 @@ tools() {
 	mv "$pkgdir"/usr/bin "$subpkgdir"/usr/
 }
 
-md5sums="051c1068e6a0627f461948c365290410  tiff-4.0.3.tar.gz"
+md5sums="051c1068e6a0627f461948c365290410  tiff-4.0.3.tar.gz
+71bbe3b51f8a4e3a26cbf0af63588e4a  libtiff-CVE-2012-4447.patch
+a4b9f293f706b5668df62833cf0b56d2  libtiff-CVE-2012-4564.patch
+e9de577a81571ab8ffac84aac8c64381  libtiff-CVE-2013-1960.patch
+e484981da6d2366a30a89dc0217c115a  libtiff-CVE-2013-1961.patch"
+sha256sums="ea1aebe282319537fb2d4d7805f478dd4e0e05c33d0928baba76a7c963684872  tiff-4.0.3.tar.gz
+917187494cd3f80929e4919951637683aaccd98ffa23a6f1f97e49f6db85baa9  libtiff-CVE-2012-4447.patch
+0ef1f4055930c8b38246a4f6ed66e393bb2f2a3d5238f5c5f5d57d1f4b230d3e  libtiff-CVE-2012-4564.patch
+688e577d3266b1cd7df5321b5e63fed82d088407a447a022eea2188d643b5a5b  libtiff-CVE-2013-1960.patch
+2f0a1cf4826416d248ff5288db7702b80245d02c624c415836053a762c1e3fd4  libtiff-CVE-2013-1961.patch"
+sha512sums="d80e18b00e9e696a30b954c0d92e5f2f773fd9a7a0a944cf6cabb69c1798e671506580daa1cd2ebf493ae922000170c2491dfc6d4c0a9cd0b865684070595a73  tiff-4.0.3.tar.gz
+1377b675cfbeffbe810518053fb2e683f889cf1274d0b1adc6060beb9ef70dcd504038b02d569d08bf497511b99ea9c237e581b4a66676d0a69370b78c98736b  libtiff-CVE-2012-4447.patch
+d8e9ffaefd9ce9f38c117faa6368fd858422b870d1afa3e9ce7b05218f35c29a84e23a1da00879aedade4c1d1d578c06be08aa51ed4e2e7d2a3ca819614be8e8  libtiff-CVE-2012-4564.patch
+db160c93453db8f4b611028bca48622eebfa54b320b780b7491bdc9c3385d227928a7e9016073a64cdd85388284aa2bb0f0af04daa235d45cdb28e4e6fcf82fa  libtiff-CVE-2013-1960.patch
+c9870c7b85d2a3c666e2c9f932c815a1b4c9fb0bf2485c7cfff3ab3435222214fa7900adc0ded0f49866f28db2124121012bac7186b675955613fa983dbf45d7  libtiff-CVE-2013-1961.patch"
diff --git a/main/tiff/libtiff-CVE-2012-4447.patch b/main/tiff/libtiff-CVE-2012-4447.patch
new file mode 100644
index 0000000000..ebf9a00e1b
--- /dev/null
+++ b/main/tiff/libtiff-CVE-2012-4447.patch
@@ -0,0 +1,40 @@
+Upstream patch for CVE-2012-4447.
+
+
+diff -Naur tiff-4.0.3.orig/libtiff/tif_pixarlog.c tiff-4.0.3/libtiff/tif_pixarlog.c
+--- tiff-4.0.3.orig/libtiff/tif_pixarlog.c	2012-07-04 15:26:31.000000000 -0400
++++ tiff-4.0.3/libtiff/tif_pixarlog.c	2012-12-12 16:43:18.931315699 -0500
+@@ -644,6 +644,20 @@
+ 	return bytes;
+ }
+ 
++static tmsize_t
++add_ms(tmsize_t m1, tmsize_t m2)
++{
++	tmsize_t bytes = m1 + m2;
++
++	/* if either input is zero, assume overflow already occurred */
++	if (m1 == 0 || m2 == 0)
++		bytes = 0;
++	else if (bytes <= m1 || bytes <= m2)
++		bytes = 0;
++
++	return bytes;
++}
++
+ static int
+ PixarLogFixupTags(TIFF* tif)
+ {
+@@ -671,9 +685,11 @@
+ 	    td->td_samplesperpixel : 1);
+ 	tbuf_size = multiply_ms(multiply_ms(multiply_ms(sp->stride, td->td_imagewidth),
+ 				      td->td_rowsperstrip), sizeof(uint16));
++	/* add one more stride in case input ends mid-stride */
++	tbuf_size = add_ms(tbuf_size, sizeof(uint16) * sp->stride);
+ 	if (tbuf_size == 0)
+ 		return (0);   /* TODO: this is an error return without error report through TIFFErrorExt */
+-	sp->tbuf = (uint16 *) _TIFFmalloc(tbuf_size+sizeof(uint16)*sp->stride);
++	sp->tbuf = (uint16 *) _TIFFmalloc(tbuf_size);
+ 	if (sp->tbuf == NULL)
+ 		return (0);
+ 	if (sp->user_datafmt == PIXARLOGDATAFMT_UNKNOWN)
diff --git a/main/tiff/libtiff-CVE-2012-4564.patch b/main/tiff/libtiff-CVE-2012-4564.patch
new file mode 100644
index 0000000000..3d7946c7ec
--- /dev/null
+++ b/main/tiff/libtiff-CVE-2012-4564.patch
@@ -0,0 +1,86 @@
+Upstream patch for CVE-2012-4564.
+
+
+diff -Naur tiff-4.0.3.orig/tools/ppm2tiff.c tiff-4.0.3/tools/ppm2tiff.c
+--- tiff-4.0.3.orig/tools/ppm2tiff.c	2010-04-10 15:22:34.000000000 -0400
++++ tiff-4.0.3/tools/ppm2tiff.c	2012-12-12 16:43:18.932315708 -0500
+@@ -72,6 +72,17 @@
+ 	exit(-2);
+ }
+ 
++static tmsize_t
++multiply_ms(tmsize_t m1, tmsize_t m2)
++{
++	tmsize_t bytes = m1 * m2;
++
++	if (m1 && bytes / m1 != m2)
++		bytes = 0;
++
++	return bytes;
++}
++
+ int
+ main(int argc, char* argv[])
+ {
+@@ -79,7 +90,7 @@
+ 	uint32 rowsperstrip = (uint32) -1;
+ 	double resolution = -1;
+ 	unsigned char *buf = NULL;
+-	tsize_t linebytes = 0;
++	tmsize_t linebytes = 0;
+ 	uint16 spp = 1;
+ 	uint16 bpp = 8;
+ 	TIFF *out;
+@@ -89,6 +100,7 @@
+ 	int c;
+ 	extern int optind;
+ 	extern char* optarg;
++	tmsize_t scanline_size;
+ 
+ 	if (argc < 2) {
+ 	    fprintf(stderr, "%s: Too few arguments\n", argv[0]);
+@@ -221,7 +233,8 @@
+ 	}
+ 	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 {
+@@ -230,15 +243,31 @@
+ 			}
+ 			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);
diff --git a/main/tiff/libtiff-CVE-2013-1960.patch b/main/tiff/libtiff-CVE-2013-1960.patch
new file mode 100644
index 0000000000..1c8dfb7bc6
--- /dev/null
+++ b/main/tiff/libtiff-CVE-2013-1960.patch
@@ -0,0 +1,145 @@
+diff -Naur tiff-4.0.3.orig/tools/tiff2pdf.c tiff-4.0.3/tools/tiff2pdf.c
+--- tiff-4.0.3.orig/tools/tiff2pdf.c	2012-07-25 22:56:43.000000000 -0400
++++ tiff-4.0.3/tools/tiff2pdf.c	2013-05-02 12:04:49.057090227 -0400
+@@ -3341,33 +3341,56 @@
+ 	uint32 height){
+ 
+ 	tsize_t i=0;
+-	uint16 ri =0;
+-	uint16 v_samp=1;
+-	uint16 h_samp=1;
+-	int j=0;
+-	
+-	i++;
+-	
+-	while(i<(*striplength)){
++
++	while (i < *striplength) {
++		tsize_t datalen;
++		uint16 ri;
++		uint16 v_samp;
++		uint16 h_samp;
++		int j;
++		int ncomp;
++
++		/* marker header: one or more FFs */
++		if (strip[i] != 0xff)
++			return(0);
++		i++;
++		while (i < *striplength && strip[i] == 0xff)
++			i++;
++		if (i >= *striplength)
++			return(0);
++		/* SOI is the only pre-SOS marker without a length word */
++		if (strip[i] == 0xd8)
++			datalen = 0;
++		else {
++			if ((*striplength - i) <= 2)
++				return(0);
++			datalen = (strip[i+1] << 8) | strip[i+2];
++			if (datalen < 2 || datalen >= (*striplength - i))
++				return(0);
++		}
+ 		switch( strip[i] ){
+-			case 0xd8:
+-				/* SOI - start of image */
++			case 0xd8:	/* SOI - start of image */
+ 				_TIFFmemcpy(&(buffer[*bufferoffset]), &(strip[i-1]), 2);
+ 				*bufferoffset+=2;
+-				i+=2;
+ 				break;
+-			case 0xc0:
+-			case 0xc1:
+-			case 0xc3:
+-			case 0xc9:
+-			case 0xca:
++			case 0xc0:	/* SOF0 */
++			case 0xc1:	/* SOF1 */
++			case 0xc3:	/* SOF3 */
++			case 0xc9:	/* SOF9 */
++			case 0xca:	/* SOF10 */
+ 				if(no==0){
+-					_TIFFmemcpy(&(buffer[*bufferoffset]), &(strip[i-1]), strip[i+2]+2);
+-					for(j=0;j<buffer[*bufferoffset+9];j++){
+-						if( (buffer[*bufferoffset+11+(2*j)]>>4) > h_samp) 
+-							h_samp = (buffer[*bufferoffset+11+(2*j)]>>4);
+-						if( (buffer[*bufferoffset+11+(2*j)] & 0x0f) > v_samp) 
+-							v_samp = (buffer[*bufferoffset+11+(2*j)] & 0x0f);
++					_TIFFmemcpy(&(buffer[*bufferoffset]), &(strip[i-1]), datalen+2);
++					ncomp = buffer[*bufferoffset+9];
++					if (ncomp < 1 || ncomp > 4)
++						return(0);
++					v_samp=1;
++					h_samp=1;
++					for(j=0;j<ncomp;j++){
++						uint16 samp = buffer[*bufferoffset+11+(3*j)];
++						if( (samp>>4) > h_samp) 
++							h_samp = (samp>>4);
++						if( (samp & 0x0f) > v_samp) 
++							v_samp = (samp & 0x0f);
+ 					}
+ 					v_samp*=8;
+ 					h_samp*=8;
+@@ -3381,45 +3404,43 @@
+                                           (unsigned char) ((height>>8) & 0xff);
+ 					buffer[*bufferoffset+6]=
+                                             (unsigned char) (height & 0xff);
+-					*bufferoffset+=strip[i+2]+2;
+-					i+=strip[i+2]+2;
+-
++					*bufferoffset+=datalen+2;
++					/* insert a DRI marker */
+ 					buffer[(*bufferoffset)++]=0xff;
+ 					buffer[(*bufferoffset)++]=0xdd;
+ 					buffer[(*bufferoffset)++]=0x00;
+ 					buffer[(*bufferoffset)++]=0x04;
+ 					buffer[(*bufferoffset)++]=(ri >> 8) & 0xff;
+ 					buffer[(*bufferoffset)++]= ri & 0xff;
+-				} else {
+-					i+=strip[i+2]+2;
+ 				}
+ 				break;
+-			case 0xc4:
+-			case 0xdb:
+-				_TIFFmemcpy(&(buffer[*bufferoffset]), &(strip[i-1]), strip[i+2]+2);
+-				*bufferoffset+=strip[i+2]+2;
+-				i+=strip[i+2]+2;
++			case 0xc4: /* DHT */
++			case 0xdb: /* DQT */
++				_TIFFmemcpy(&(buffer[*bufferoffset]), &(strip[i-1]), datalen+2);
++				*bufferoffset+=datalen+2;
+ 				break;
+-			case 0xda:
++			case 0xda: /* SOS */
+ 				if(no==0){
+-					_TIFFmemcpy(&(buffer[*bufferoffset]), &(strip[i-1]), strip[i+2]+2);
+-					*bufferoffset+=strip[i+2]+2;
+-					i+=strip[i+2]+2;
++					_TIFFmemcpy(&(buffer[*bufferoffset]), &(strip[i-1]), datalen+2);
++					*bufferoffset+=datalen+2;
+ 				} else {
+ 					buffer[(*bufferoffset)++]=0xff;
+ 					buffer[(*bufferoffset)++]=
+                                             (unsigned char)(0xd0 | ((no-1)%8));
+-					i+=strip[i+2]+2;
+ 				}
+-				_TIFFmemcpy(&(buffer[*bufferoffset]), &(strip[i-1]), (*striplength)-i-1);
+-				*bufferoffset+=(*striplength)-i-1;
++				i += datalen + 1;
++				/* copy remainder of strip */
++				_TIFFmemcpy(&(buffer[*bufferoffset]), &(strip[i]), *striplength - i);
++				*bufferoffset+= *striplength - i;
+ 				return(1);
+ 			default:
+-				i+=strip[i+2]+2;
++				/* ignore any other marker */
++				break;
+ 		}
++		i += datalen + 1;
+ 	}
+-	
+ 
++	/* failed to find SOS marker */
+ 	return(0);
+ }
+ #endif
diff --git a/main/tiff/libtiff-CVE-2013-1961.patch b/main/tiff/libtiff-CVE-2013-1961.patch
new file mode 100644
index 0000000000..0ea9b52e3f
--- /dev/null
+++ b/main/tiff/libtiff-CVE-2013-1961.patch
@@ -0,0 +1,759 @@
+diff -Naur tiff-4.0.3.orig/contrib/dbs/xtiff/xtiff.c tiff-4.0.3/contrib/dbs/xtiff/xtiff.c
+--- tiff-4.0.3.orig/contrib/dbs/xtiff/xtiff.c	2010-06-08 14:55:15.000000000 -0400
++++ tiff-4.0.3/contrib/dbs/xtiff/xtiff.c	2013-05-02 12:02:42.782287939 -0400
+@@ -512,9 +512,9 @@
+     Arg args[1];
+ 
+     if (tfMultiPage)
+-        sprintf(buffer, "%s - page %d", fileName, tfDirectory);
++        snprintf(buffer, sizeof(buffer), "%s - page %d", fileName, tfDirectory);
+     else
+-        strcpy(buffer, fileName);
++        snprintf(buffer, sizeof(buffer), "%s", fileName);
+     XtSetArg(args[0], XtNlabel, buffer);
+     XtSetValues(labelWidget, args, 1);
+ }
+diff -Naur tiff-4.0.3.orig/libtiff/tif_codec.c tiff-4.0.3/libtiff/tif_codec.c
+--- tiff-4.0.3.orig/libtiff/tif_codec.c	2010-12-14 09:18:28.000000000 -0500
++++ tiff-4.0.3/libtiff/tif_codec.c	2013-05-02 12:02:42.783287946 -0400
+@@ -108,7 +108,8 @@
+ 	const TIFFCodec* c = TIFFFindCODEC(tif->tif_dir.td_compression);
+         char compression_code[20];
+         
+-        sprintf( compression_code, "%d", tif->tif_dir.td_compression );
++        snprintf(compression_code, sizeof(compression_code), "%d",
++		 tif->tif_dir.td_compression );
+ 	TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
+                      "%s compression support is not configured", 
+                      c ? c->name : compression_code );
+diff -Naur tiff-4.0.3.orig/libtiff/tif_dirinfo.c tiff-4.0.3/libtiff/tif_dirinfo.c
+--- tiff-4.0.3.orig/libtiff/tif_dirinfo.c	2012-08-19 12:56:34.000000000 -0400
++++ tiff-4.0.3/libtiff/tif_dirinfo.c	2013-05-02 12:02:42.784287953 -0400
+@@ -711,7 +711,7 @@
+ 	 * note that this name is a special sign to TIFFClose() and
+ 	 * _TIFFSetupFields() to free the field
+ 	 */
+-	sprintf(fld->field_name, "Tag %d", (int) tag);
++	snprintf(fld->field_name, 32, "Tag %d", (int) tag);
+ 
+ 	return fld;    
+ }
+diff -Naur tiff-4.0.3.orig/tools/rgb2ycbcr.c tiff-4.0.3/tools/rgb2ycbcr.c
+--- tiff-4.0.3.orig/tools/rgb2ycbcr.c	2011-05-31 13:03:16.000000000 -0400
++++ tiff-4.0.3/tools/rgb2ycbcr.c	2013-05-02 12:02:42.785287961 -0400
+@@ -332,7 +332,8 @@
+ 	TIFFSetField(out, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
+ 	{ char buf[2048];
+ 	  char *cp = strrchr(TIFFFileName(in), '/');
+-	  sprintf(buf, "YCbCr conversion of %s", cp ? cp+1 : TIFFFileName(in));
++	  snprintf(buf, sizeof(buf), "YCbCr conversion of %s",
++		   cp ? cp+1 : TIFFFileName(in));
+ 	  TIFFSetField(out, TIFFTAG_IMAGEDESCRIPTION, buf);
+ 	}
+ 	TIFFSetField(out, TIFFTAG_SOFTWARE, TIFFGetVersion());
+diff -Naur tiff-4.0.3.orig/tools/tiff2bw.c tiff-4.0.3/tools/tiff2bw.c
+--- tiff-4.0.3.orig/tools/tiff2bw.c	2010-07-08 12:10:24.000000000 -0400
++++ tiff-4.0.3/tools/tiff2bw.c	2013-05-02 12:02:42.785287961 -0400
+@@ -205,7 +205,7 @@
+ 		}
+ 	}
+ 	TIFFSetField(out, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISBLACK);
+-	sprintf(thing, "B&W version of %s", argv[optind]);
++	snprintf(thing, sizeof(thing), "B&W version of %s", argv[optind]);
+ 	TIFFSetField(out, TIFFTAG_IMAGEDESCRIPTION, thing);
+ 	TIFFSetField(out, TIFFTAG_SOFTWARE, "tiff2bw");
+ 	outbuf = (unsigned char *)_TIFFmalloc(TIFFScanlineSize(out));
+diff -Naur tiff-4.0.3.orig/tools/tiff2pdf.c tiff-4.0.3/tools/tiff2pdf.c
+--- tiff-4.0.3.orig/tools/tiff2pdf.c	2012-07-25 22:56:43.000000000 -0400
++++ tiff-4.0.3/tools/tiff2pdf.c	2013-05-02 12:02:42.788287983 -0400
+@@ -3609,7 +3609,9 @@
+ 	char buffer[16];
+ 	int buflen=0;
+ 	
+-	buflen=sprintf(buffer, "%%PDF-%u.%u ", t2p->pdf_majorversion&0xff, t2p->pdf_minorversion&0xff);
++	buflen = snprintf(buffer, sizeof(buffer), "%%PDF-%u.%u ",
++			  t2p->pdf_majorversion&0xff,
++			  t2p->pdf_minorversion&0xff);
+ 	written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 	written += t2pWriteFile(output, (tdata_t)"\n%\342\343\317\323\n", 7);
+ 
+@@ -3623,10 +3625,10 @@
+ tsize_t t2p_write_pdf_obj_start(uint32 number, TIFF* output){
+ 
+ 	tsize_t written=0;
+-	char buffer[16];
++	char buffer[32];
+ 	int buflen=0;
+ 
+-	buflen=sprintf(buffer, "%lu", (unsigned long)number);
++	buflen=snprintf(buffer, sizeof(buffer), "%lu", (unsigned long)number);
+ 	written += t2pWriteFile(output, (tdata_t) buffer, buflen );
+ 	written += t2pWriteFile(output, (tdata_t) " 0 obj\n", 7);
+ 
+@@ -3665,13 +3667,13 @@
+ 	written += t2pWriteFile(output, (tdata_t) "/", 1);
+ 	for (i=0;i<namelen;i++){
+ 		if ( ((unsigned char)name[i]) < 0x21){
+-			sprintf(buffer, "#%.2X", name[i]);
++			snprintf(buffer, sizeof(buffer), "#%.2X", name[i]);
+ 			buffer[sizeof(buffer) - 1] = '\0';
+ 			written += t2pWriteFile(output, (tdata_t) buffer, 3);
+ 			nextchar=1;
+ 		}
+ 		if ( ((unsigned char)name[i]) > 0x7E){
+-			sprintf(buffer, "#%.2X", name[i]);
++			snprintf(buffer, sizeof(buffer), "#%.2X", name[i]);
+ 			buffer[sizeof(buffer) - 1] = '\0';
+ 			written += t2pWriteFile(output, (tdata_t) buffer, 3);
+ 			nextchar=1;
+@@ -3679,57 +3681,57 @@
+ 		if (nextchar==0){
+ 			switch (name[i]){
+ 				case 0x23:
+-					sprintf(buffer, "#%.2X", name[i]);
++					snprintf(buffer, sizeof(buffer), "#%.2X", name[i]);
+ 					buffer[sizeof(buffer) - 1] = '\0';
+ 					written += t2pWriteFile(output, (tdata_t) buffer, 3);
+ 					break;
+ 				case 0x25:
+-					sprintf(buffer, "#%.2X", name[i]);
++					snprintf(buffer, sizeof(buffer), "#%.2X", name[i]);
+ 					buffer[sizeof(buffer) - 1] = '\0';
+ 					written += t2pWriteFile(output, (tdata_t) buffer, 3);
+ 					break;
+ 				case 0x28:
+-					sprintf(buffer, "#%.2X", name[i]);
++					snprintf(buffer, sizeof(buffer), "#%.2X", name[i]);
+ 					buffer[sizeof(buffer) - 1] = '\0';
+ 					written += t2pWriteFile(output, (tdata_t) buffer, 3);
+ 					break;
+ 				case 0x29:
+-					sprintf(buffer, "#%.2X", name[i]); 
++					snprintf(buffer, sizeof(buffer), "#%.2X", name[i]); 
+ 					buffer[sizeof(buffer) - 1] = '\0';
+ 					written += t2pWriteFile(output, (tdata_t) buffer, 3);
+ 					break;
+ 				case 0x2F:
+-					sprintf(buffer, "#%.2X", name[i]); 
++					snprintf(buffer, sizeof(buffer), "#%.2X", name[i]); 
+ 					buffer[sizeof(buffer) - 1] = '\0';
+ 					written += t2pWriteFile(output, (tdata_t) buffer, 3);
+ 					break;
+ 				case 0x3C:
+-					sprintf(buffer, "#%.2X", name[i]); 
++					snprintf(buffer, sizeof(buffer), "#%.2X", name[i]); 
+ 					buffer[sizeof(buffer) - 1] = '\0';
+ 					written += t2pWriteFile(output, (tdata_t) buffer, 3);
+ 					break;
+ 				case 0x3E:
+-					sprintf(buffer, "#%.2X", name[i]);
++					snprintf(buffer, sizeof(buffer), "#%.2X", name[i]);
+ 					buffer[sizeof(buffer) - 1] = '\0';
+ 					written += t2pWriteFile(output, (tdata_t) buffer, 3);
+ 					break;
+ 				case 0x5B:
+-					sprintf(buffer, "#%.2X", name[i]); 
++					snprintf(buffer, sizeof(buffer), "#%.2X", name[i]); 
+ 					buffer[sizeof(buffer) - 1] = '\0';
+ 					written += t2pWriteFile(output, (tdata_t) buffer, 3);
+ 					break;
+ 				case 0x5D:
+-					sprintf(buffer, "#%.2X", name[i]);
++					snprintf(buffer, sizeof(buffer), "#%.2X", name[i]);
+ 					buffer[sizeof(buffer) - 1] = '\0';
+ 					written += t2pWriteFile(output, (tdata_t) buffer, 3);
+ 					break;
+ 				case 0x7B:
+-					sprintf(buffer, "#%.2X", name[i]); 
++					snprintf(buffer, sizeof(buffer), "#%.2X", name[i]); 
+ 					buffer[sizeof(buffer) - 1] = '\0';
+ 					written += t2pWriteFile(output, (tdata_t) buffer, 3);
+ 					break;
+ 				case 0x7D:
+-					sprintf(buffer, "#%.2X", name[i]); 
++					snprintf(buffer, sizeof(buffer), "#%.2X", name[i]); 
+ 					buffer[sizeof(buffer) - 1] = '\0';
+ 					written += t2pWriteFile(output, (tdata_t) buffer, 3);
+ 					break;
+@@ -3844,14 +3846,14 @@
+ tsize_t t2p_write_pdf_stream_dict(tsize_t len, uint32 number, TIFF* output){
+ 	
+ 	tsize_t written=0;
+-	char buffer[16];
++	char buffer[32];
+ 	int buflen=0;
+ 	
+ 	written += t2pWriteFile(output, (tdata_t) "/Length ", 8);
+ 	if(len!=0){
+ 		written += t2p_write_pdf_stream_length(len, output);
+ 	} else {
+-		buflen=sprintf(buffer, "%lu", (unsigned long)number);
++		buflen=snprintf(buffer, sizeof(buffer), "%lu", (unsigned long)number);
+ 		written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 		written += t2pWriteFile(output, (tdata_t) " 0 R \n", 6);
+ 	}
+@@ -3892,10 +3894,10 @@
+ tsize_t t2p_write_pdf_stream_length(tsize_t len, TIFF* output){
+ 
+ 	tsize_t written=0;
+-	char buffer[16];
++	char buffer[32];
+ 	int buflen=0;
+ 
+-	buflen=sprintf(buffer, "%lu", (unsigned long)len);
++	buflen=snprintf(buffer, sizeof(buffer), "%lu", (unsigned long)len);
+ 	written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 	written += t2pWriteFile(output, (tdata_t) "\n", 1);
+ 
+@@ -3909,7 +3911,7 @@
+ tsize_t t2p_write_pdf_catalog(T2P* t2p, TIFF* output)
+ {
+ 	tsize_t written = 0;
+-	char buffer[16];
++	char buffer[32];
+ 	int buflen = 0;
+ 
+ 	written += t2pWriteFile(output, 
+@@ -3948,7 +3950,6 @@
+ 		written += t2p_write_pdf_string(t2p->pdf_datetime, output);
+ 	}
+ 	written += t2pWriteFile(output, (tdata_t) "\n/Producer ", 11);
+-	_TIFFmemset((tdata_t)buffer, 0x00, sizeof(buffer));
+ 	snprintf(buffer, sizeof(buffer), "libtiff / tiff2pdf - %d", TIFFLIB_VERSION);
+ 	written += t2p_write_pdf_string(buffer, output);
+ 	written += t2pWriteFile(output, (tdata_t) "\n", 1);
+@@ -4089,7 +4090,7 @@
+ {
+ 	tsize_t written=0;
+ 	tdir_t i=0;
+-	char buffer[16];
++	char buffer[32];
+ 	int buflen=0;
+ 
+ 	int page=0;
+@@ -4097,7 +4098,7 @@
+ 		(tdata_t) "<< \n/Type /Pages \n/Kids [ ", 26);
+ 	page = t2p->pdf_pages+1;
+ 	for (i=0;i<t2p->tiff_pagecount;i++){
+-		buflen=sprintf(buffer, "%d", page);
++		buflen=snprintf(buffer, sizeof(buffer), "%d", page);
+ 		written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 		written += t2pWriteFile(output, (tdata_t) " 0 R ", 5);
+ 		if ( ((i+1)%8)==0 ) {
+@@ -4112,8 +4113,7 @@
+ 		}
+ 	}
+ 	written += t2pWriteFile(output, (tdata_t) "] \n/Count ", 10);
+-	_TIFFmemset(buffer, 0x00, 16);
+-	buflen=sprintf(buffer, "%d", t2p->tiff_pagecount);
++	buflen=snprintf(buffer, sizeof(buffer), "%d", t2p->tiff_pagecount);
+ 	written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 	written += t2pWriteFile(output, (tdata_t) " \n>> \n", 6);
+ 
+@@ -4128,28 +4128,28 @@
+ 
+ 	unsigned int i=0;
+ 	tsize_t written=0;
+-	char buffer[16];
++	char buffer[256];
+ 	int buflen=0;
+ 
+ 	written += t2pWriteFile(output, (tdata_t) "<<\n/Type /Page \n/Parent ", 24);
+-	buflen=sprintf(buffer, "%lu", (unsigned long)t2p->pdf_pages);
++	buflen=snprintf(buffer, sizeof(buffer), "%lu", (unsigned long)t2p->pdf_pages);
+ 	written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 	written += t2pWriteFile(output, (tdata_t) " 0 R \n", 6);
+ 	written += t2pWriteFile(output, (tdata_t) "/MediaBox [", 11); 
+-	buflen=sprintf(buffer, "%.4f",t2p->pdf_mediabox.x1);
++	buflen=snprintf(buffer, sizeof(buffer), "%.4f",t2p->pdf_mediabox.x1);
+ 	written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 	written += t2pWriteFile(output, (tdata_t) " ", 1); 
+-	buflen=sprintf(buffer, "%.4f",t2p->pdf_mediabox.y1);
++	buflen=snprintf(buffer, sizeof(buffer), "%.4f",t2p->pdf_mediabox.y1);
+ 	written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 	written += t2pWriteFile(output, (tdata_t) " ", 1); 
+-	buflen=sprintf(buffer, "%.4f",t2p->pdf_mediabox.x2);
++	buflen=snprintf(buffer, sizeof(buffer), "%.4f",t2p->pdf_mediabox.x2);
+ 	written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 	written += t2pWriteFile(output, (tdata_t) " ", 1); 
+-	buflen=sprintf(buffer, "%.4f",t2p->pdf_mediabox.y2);
++	buflen=snprintf(buffer, sizeof(buffer), "%.4f",t2p->pdf_mediabox.y2);
+ 	written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 	written += t2pWriteFile(output, (tdata_t) "] \n", 3); 
+ 	written += t2pWriteFile(output, (tdata_t) "/Contents ", 10);
+-	buflen=sprintf(buffer, "%lu", (unsigned long)(object + 1));
++	buflen=snprintf(buffer, sizeof(buffer), "%lu", (unsigned long)(object + 1));
+ 	written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 	written += t2pWriteFile(output, (tdata_t) " 0 R \n", 6);
+ 	written += t2pWriteFile(output, (tdata_t) "/Resources << \n", 15);
+@@ -4157,15 +4157,13 @@
+ 		written += t2pWriteFile(output, (tdata_t) "/XObject <<\n", 12);
+ 		for(i=0;i<t2p->tiff_tiles[t2p->pdf_page].tiles_tilecount;i++){
+ 			written += t2pWriteFile(output, (tdata_t) "/Im", 3);
+-			buflen = sprintf(buffer, "%u", t2p->pdf_page+1);
++			buflen = snprintf(buffer, sizeof(buffer), "%u", t2p->pdf_page+1);
+ 			written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 			written += t2pWriteFile(output, (tdata_t) "_", 1);
+-			buflen = sprintf(buffer, "%u", i+1);
++			buflen = snprintf(buffer, sizeof(buffer), "%u", i+1);
+ 			written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 			written += t2pWriteFile(output, (tdata_t) " ", 1);
+-			buflen = sprintf(
+-				buffer, 
+-				"%lu", 
++			buflen = snprintf(buffer, sizeof(buffer), "%lu",
+ 				(unsigned long)(object+3+(2*i)+t2p->tiff_pages[t2p->pdf_page].page_extra)); 
+ 			written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 			written += t2pWriteFile(output, (tdata_t) " 0 R ", 5);
+@@ -4177,12 +4175,10 @@
+ 	} else {
+ 			written += t2pWriteFile(output, (tdata_t) "/XObject <<\n", 12);
+ 			written += t2pWriteFile(output, (tdata_t) "/Im", 3);
+-			buflen = sprintf(buffer, "%u", t2p->pdf_page+1);
++			buflen = snprintf(buffer, sizeof(buffer), "%u", t2p->pdf_page+1);
+ 			written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 			written += t2pWriteFile(output, (tdata_t) " ", 1);
+-			buflen = sprintf(
+-				buffer, 
+-				"%lu", 
++			buflen = snprintf(buffer, sizeof(buffer), "%lu",
+ 				(unsigned long)(object+3+(2*i)+t2p->tiff_pages[t2p->pdf_page].page_extra)); 
+ 			written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 			written += t2pWriteFile(output, (tdata_t) " 0 R ", 5);
+@@ -4191,9 +4187,7 @@
+ 	if(t2p->tiff_transferfunctioncount != 0) {
+ 		written += t2pWriteFile(output, (tdata_t) "/ExtGState <<", 13);
+ 		t2pWriteFile(output, (tdata_t) "/GS1 ", 5);
+-		buflen = sprintf(
+-			buffer, 
+-			"%lu", 
++		buflen = snprintf(buffer, sizeof(buffer), "%lu",
+ 			(unsigned long)(object + 3)); 
+ 		written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 		written += t2pWriteFile(output, (tdata_t) " 0 R ", 5);
+@@ -4566,7 +4560,7 @@
+ 	if(t2p->tiff_tiles[t2p->pdf_page].tiles_tilecount>0){ 
+ 		for(i=0;i<t2p->tiff_tiles[t2p->pdf_page].tiles_tilecount; i++){
+ 			box=t2p->tiff_tiles[t2p->pdf_page].tiles_tiles[i].tile_box;
+-			buflen=sprintf(buffer, 
++			buflen=snprintf(buffer, sizeof(buffer), 
+ 				"q %s %.4f %.4f %.4f %.4f %.4f %.4f cm /Im%d_%ld Do Q\n", 
+ 				t2p->tiff_transferfunctioncount?"/GS1 gs ":"",
+ 				box.mat[0],
+@@ -4581,7 +4575,7 @@
+ 		}
+ 	} else {
+ 		box=t2p->pdf_imagebox;
+-		buflen=sprintf(buffer, 
++		buflen=snprintf(buffer, sizeof(buffer), 
+ 			"q %s %.4f %.4f %.4f %.4f %.4f %.4f cm /Im%d Do Q\n", 
+ 			t2p->tiff_transferfunctioncount?"/GS1 gs ":"",
+ 			box.mat[0],
+@@ -4606,59 +4600,48 @@
+ 												TIFF* output){
+ 
+ 	tsize_t written=0;
+-	char buffer[16];
++	char buffer[32];
+ 	int buflen=0;
+ 
+ 	written += t2p_write_pdf_stream_dict(0, t2p->pdf_xrefcount+1, output); 
+ 	written += t2pWriteFile(output, 
+ 		(tdata_t) "/Type /XObject \n/Subtype /Image \n/Name /Im", 
+ 		42);
+-	buflen=sprintf(buffer, "%u", t2p->pdf_page+1);
++	buflen=snprintf(buffer, sizeof(buffer), "%u", t2p->pdf_page+1);
+ 	written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 	if(tile != 0){
+ 		written += t2pWriteFile(output, (tdata_t) "_", 1);
+-		buflen=sprintf(buffer, "%lu", (unsigned long)tile);
++		buflen=snprintf(buffer, sizeof(buffer), "%lu", (unsigned long)tile);
+ 		written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 	}
+ 	written += t2pWriteFile(output, (tdata_t) "\n/Width ", 8);
+-	_TIFFmemset((tdata_t)buffer, 0x00, 16);
+ 	if(tile==0){
+-		buflen=sprintf(buffer, "%lu", (unsigned long)t2p->tiff_width);
++		buflen=snprintf(buffer, sizeof(buffer), "%lu", (unsigned long)t2p->tiff_width);
+ 	} else {
+ 		if(t2p_tile_is_right_edge(t2p->tiff_tiles[t2p->pdf_page], tile-1)!=0){
+-			buflen=sprintf(
+-				buffer, 
+-				"%lu", 
++			buflen=snprintf(buffer, sizeof(buffer), "%lu",
+ 				(unsigned long)t2p->tiff_tiles[t2p->pdf_page].tiles_edgetilewidth);
+ 		} else {
+-			buflen=sprintf(
+-				buffer, 
+-				"%lu", 
++			buflen=snprintf(buffer, sizeof(buffer), "%lu",
+ 				(unsigned long)t2p->tiff_tiles[t2p->pdf_page].tiles_tilewidth);
+ 		}
+ 	}
+ 	written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 	written += t2pWriteFile(output, (tdata_t) "\n/Height ", 9);
+-	_TIFFmemset((tdata_t)buffer, 0x00, 16);
+ 	if(tile==0){
+-		buflen=sprintf(buffer, "%lu", (unsigned long)t2p->tiff_length);
++		buflen=snprintf(buffer, sizeof(buffer), "%lu", (unsigned long)t2p->tiff_length);
+ 	} else {
+ 		if(t2p_tile_is_bottom_edge(t2p->tiff_tiles[t2p->pdf_page], tile-1)!=0){
+-			buflen=sprintf(
+-				buffer, 
+-				"%lu", 
++			buflen=snprintf(buffer, sizeof(buffer), "%lu",
+ 				(unsigned long)t2p->tiff_tiles[t2p->pdf_page].tiles_edgetilelength);
+ 		} else {
+-			buflen=sprintf(
+-				buffer, 
+-				"%lu", 
++			buflen=snprintf(buffer, sizeof(buffer), "%lu",
+ 				(unsigned long)t2p->tiff_tiles[t2p->pdf_page].tiles_tilelength);
+ 		}
+ 	}
+ 	written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 	written += t2pWriteFile(output, (tdata_t) "\n/BitsPerComponent ", 19);
+-	_TIFFmemset((tdata_t)buffer, 0x00, 16);
+-	buflen=sprintf(buffer, "%u", t2p->tiff_bitspersample);
++	buflen=snprintf(buffer, sizeof(buffer), "%u", t2p->tiff_bitspersample);
+ 	written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 	written += t2pWriteFile(output, (tdata_t) "\n/ColorSpace ", 13);
+ 	written += t2p_write_pdf_xobject_cs(t2p, output);
+@@ -4702,11 +4685,10 @@
+ 		t2p->pdf_colorspace ^= T2P_CS_PALETTE;
+ 		written += t2p_write_pdf_xobject_cs(t2p, output);
+ 		t2p->pdf_colorspace |= T2P_CS_PALETTE;
+-		buflen=sprintf(buffer, "%u", (0x0001 << t2p->tiff_bitspersample)-1 );
++		buflen=snprintf(buffer, sizeof(buffer), "%u", (0x0001 << t2p->tiff_bitspersample)-1 );
+ 		written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 		written += t2pWriteFile(output, (tdata_t) " ", 1);
+-		_TIFFmemset(buffer, 0x00, 16);
+-		buflen=sprintf(buffer, "%lu", (unsigned long)t2p->pdf_palettecs ); 
++		buflen=snprintf(buffer, sizeof(buffer), "%lu", (unsigned long)t2p->pdf_palettecs ); 
+ 		written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 		written += t2pWriteFile(output, (tdata_t) " 0 R ]\n", 7);
+ 		return(written);
+@@ -4740,10 +4722,10 @@
+ 			X_W /= Y_W;
+ 			Z_W /= Y_W;
+ 			Y_W = 1.0F;
+-			buflen=sprintf(buffer, "[%.4f %.4f %.4f] \n", X_W, Y_W, Z_W);
++			buflen=snprintf(buffer, sizeof(buffer), "[%.4f %.4f %.4f] \n", X_W, Y_W, Z_W);
+ 			written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 			written += t2pWriteFile(output, (tdata_t) "/Range ", 7);
+-			buflen=sprintf(buffer, "[%d %d %d %d] \n", 
++			buflen=snprintf(buffer, sizeof(buffer), "[%d %d %d %d] \n", 
+ 				t2p->pdf_labrange[0], 
+ 				t2p->pdf_labrange[1], 
+ 				t2p->pdf_labrange[2], 
+@@ -4759,26 +4741,26 @@
+ tsize_t t2p_write_pdf_transfer(T2P* t2p, TIFF* output){
+ 
+ 	tsize_t written=0;
+-	char buffer[16];
++	char buffer[32];
+ 	int buflen=0;
+ 
+ 	written += t2pWriteFile(output, (tdata_t) "<< /Type /ExtGState \n/TR ", 25);
+ 	if(t2p->tiff_transferfunctioncount == 1){
+-		buflen=sprintf(buffer, "%lu",
++		buflen=snprintf(buffer, sizeof(buffer), "%lu",
+ 			       (unsigned long)(t2p->pdf_xrefcount + 1));
+ 		written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 		written += t2pWriteFile(output, (tdata_t) " 0 R ", 5);
+ 	} else {
+ 		written += t2pWriteFile(output, (tdata_t) "[ ", 2);
+-		buflen=sprintf(buffer, "%lu",
++		buflen=snprintf(buffer, sizeof(buffer), "%lu",
+ 			       (unsigned long)(t2p->pdf_xrefcount + 1));
+ 		written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 		written += t2pWriteFile(output, (tdata_t) " 0 R ", 5);
+-		buflen=sprintf(buffer, "%lu",
++		buflen=snprintf(buffer, sizeof(buffer), "%lu",
+ 			       (unsigned long)(t2p->pdf_xrefcount + 2));
+ 		written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 		written += t2pWriteFile(output, (tdata_t) " 0 R ", 5);
+-		buflen=sprintf(buffer, "%lu",
++		buflen=snprintf(buffer, sizeof(buffer), "%lu",
+ 			       (unsigned long)(t2p->pdf_xrefcount + 3));
+ 		written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 		written += t2pWriteFile(output, (tdata_t) " 0 R ", 5);
+@@ -4800,7 +4782,7 @@
+ 	written += t2pWriteFile(output, (tdata_t) "/FunctionType 0 \n", 17);
+ 	written += t2pWriteFile(output, (tdata_t) "/Domain [0.0 1.0] \n", 19);
+ 	written += t2pWriteFile(output, (tdata_t) "/Range [0.0 1.0] \n", 18);
+-	buflen=sprintf(buffer, "/Size [%u] \n", (1<<t2p->tiff_bitspersample));
++	buflen=snprintf(buffer, sizeof(buffer), "/Size [%u] \n", (1<<t2p->tiff_bitspersample));
+ 	written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 	written += t2pWriteFile(output, (tdata_t) "/BitsPerSample 16 \n", 19);
+ 	written += t2p_write_pdf_stream_dict(((tsize_t)1)<<(t2p->tiff_bitspersample+1), 0, output);
+@@ -4827,7 +4809,7 @@
+ tsize_t t2p_write_pdf_xobject_calcs(T2P* t2p, TIFF* output){
+ 
+ 	tsize_t written=0;
+-	char buffer[128];
++	char buffer[256];
+ 	int buflen=0;
+ 	
+ 	float X_W=0.0;
+@@ -4895,16 +4877,16 @@
+ 	written += t2pWriteFile(output, (tdata_t) "<< \n", 4);
+ 	if(t2p->pdf_colorspace & T2P_CS_CALGRAY){
+ 		written += t2pWriteFile(output, (tdata_t) "/WhitePoint ", 12);
+-		buflen=sprintf(buffer, "[%.4f %.4f %.4f] \n", X_W, Y_W, Z_W);
++		buflen=snprintf(buffer, sizeof(buffer), "[%.4f %.4f %.4f] \n", X_W, Y_W, Z_W);
+ 		written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 		written += t2pWriteFile(output, (tdata_t) "/Gamma 2.2 \n", 12);
+ 	}
+ 	if(t2p->pdf_colorspace & T2P_CS_CALRGB){
+ 		written += t2pWriteFile(output, (tdata_t) "/WhitePoint ", 12);
+-		buflen=sprintf(buffer, "[%.4f %.4f %.4f] \n", X_W, Y_W, Z_W);
++		buflen=snprintf(buffer, sizeof(buffer), "[%.4f %.4f %.4f] \n", X_W, Y_W, Z_W);
+ 		written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 		written += t2pWriteFile(output, (tdata_t) "/Matrix ", 8);
+-		buflen=sprintf(buffer, "[%.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f] \n", 
++		buflen=snprintf(buffer, sizeof(buffer), "[%.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f] \n", 
+ 			X_R, Y_R, Z_R, 
+ 			X_G, Y_G, Z_G, 
+ 			X_B, Y_B, Z_B); 
+@@ -4923,11 +4905,11 @@
+ tsize_t t2p_write_pdf_xobject_icccs(T2P* t2p, TIFF* output){
+ 
+ 	tsize_t written=0;
+-	char buffer[16];
++	char buffer[32];
+ 	int buflen=0;
+ 	
+ 	written += t2pWriteFile(output, (tdata_t) "[/ICCBased ", 11);
+-	buflen=sprintf(buffer, "%lu", (unsigned long)t2p->pdf_icccs);
++	buflen=snprintf(buffer, sizeof(buffer), "%lu", (unsigned long)t2p->pdf_icccs);
+ 	written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 	written += t2pWriteFile(output, (tdata_t) " 0 R] \n", 7);
+ 
+@@ -4937,11 +4919,11 @@
+ tsize_t t2p_write_pdf_xobject_icccs_dict(T2P* t2p, TIFF* output){
+ 
+ 	tsize_t written=0;
+-	char buffer[16];
++	char buffer[32];
+ 	int buflen=0;
+ 	
+ 	written += t2pWriteFile(output, (tdata_t) "/N ", 3);
+-	buflen=sprintf(buffer, "%u \n", t2p->tiff_samplesperpixel);
++	buflen=snprintf(buffer, sizeof(buffer), "%u \n", t2p->tiff_samplesperpixel);
+ 	written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 	written += t2pWriteFile(output, (tdata_t) "/Alternate ", 11);
+ 	t2p->pdf_colorspace ^= T2P_CS_ICCBASED;
+@@ -5006,7 +4988,7 @@
+ tsize_t t2p_write_pdf_xobject_stream_filter(ttile_t tile, T2P* t2p, TIFF* output){
+ 
+ 	tsize_t written=0;
+-	char buffer[16];
++	char buffer[32];
+ 	int buflen=0;
+ 
+ 	if(t2p->pdf_compression==T2P_COMPRESS_NONE){
+@@ -5021,41 +5003,33 @@
+ 			written += t2pWriteFile(output, (tdata_t) "<< /K -1 ", 9);
+ 			if(tile==0){
+ 				written += t2pWriteFile(output, (tdata_t) "/Columns ", 9);
+-				buflen=sprintf(buffer, "%lu",
++				buflen=snprintf(buffer, sizeof(buffer), "%lu",
+ 					       (unsigned long)t2p->tiff_width);
+ 				written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 				written += t2pWriteFile(output, (tdata_t) " /Rows ", 7);
+-				buflen=sprintf(buffer, "%lu",
++				buflen=snprintf(buffer, sizeof(buffer), "%lu",
+ 					       (unsigned long)t2p->tiff_length);
+ 				written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 			} else {
+ 				if(t2p_tile_is_right_edge(t2p->tiff_tiles[t2p->pdf_page], tile-1)==0){
+ 					written += t2pWriteFile(output, (tdata_t) "/Columns ", 9);
+-					buflen=sprintf(
+-						buffer, 
+-						"%lu", 
++					buflen=snprintf(buffer, sizeof(buffer), "%lu",
+ 						(unsigned long)t2p->tiff_tiles[t2p->pdf_page].tiles_tilewidth);
+ 					written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 				} else {
+ 					written += t2pWriteFile(output, (tdata_t) "/Columns ", 9);
+-					buflen=sprintf(
+-						buffer, 
+-						"%lu", 
++					buflen=snprintf(buffer, sizeof(buffer), "%lu",
+ 						(unsigned long)t2p->tiff_tiles[t2p->pdf_page].tiles_edgetilewidth);
+ 					written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 				}
+ 				if(t2p_tile_is_bottom_edge(t2p->tiff_tiles[t2p->pdf_page], tile-1)==0){
+ 					written += t2pWriteFile(output, (tdata_t) " /Rows ", 7);
+-					buflen=sprintf(
+-						buffer, 
+-						"%lu", 
++					buflen=snprintf(buffer, sizeof(buffer), "%lu",
+ 						(unsigned long)t2p->tiff_tiles[t2p->pdf_page].tiles_tilelength);
+ 					written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 				} else {
+ 					written += t2pWriteFile(output, (tdata_t) " /Rows ", 7);
+-					buflen=sprintf(
+-						buffer, 
+-						"%lu", 
++					buflen=snprintf(buffer, sizeof(buffer), "%lu",
+ 						(unsigned long)t2p->tiff_tiles[t2p->pdf_page].tiles_edgetilelength);
+ 					written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 				}
+@@ -5082,21 +5056,17 @@
+ 			if(t2p->pdf_compressionquality%100){
+ 				written += t2pWriteFile(output, (tdata_t) "/DecodeParms ", 13);
+ 				written += t2pWriteFile(output, (tdata_t) "<< /Predictor ", 14);
+-				_TIFFmemset(buffer, 0x00, 16);
+-				buflen=sprintf(buffer, "%u", t2p->pdf_compressionquality%100);
++				buflen=snprintf(buffer, sizeof(buffer), "%u", t2p->pdf_compressionquality%100);
+ 				written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 				written += t2pWriteFile(output, (tdata_t) " /Columns ", 10);
+-				_TIFFmemset(buffer, 0x00, 16);
+-				buflen = sprintf(buffer, "%lu",
++				buflen = snprintf(buffer, sizeof(buffer), "%lu",
+ 						 (unsigned long)t2p->tiff_width);
+ 				written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 				written += t2pWriteFile(output, (tdata_t) " /Colors ", 9);
+-				_TIFFmemset(buffer, 0x00, 16);
+-				buflen=sprintf(buffer, "%u", t2p->tiff_samplesperpixel);
++				buflen=snprintf(buffer, sizeof(buffer), "%u", t2p->tiff_samplesperpixel);
+ 				written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 				written += t2pWriteFile(output, (tdata_t) " /BitsPerComponent ", 19);
+-				_TIFFmemset(buffer, 0x00, 16);
+-				buflen=sprintf(buffer, "%u", t2p->tiff_bitspersample);
++				buflen=snprintf(buffer, sizeof(buffer), "%u", t2p->tiff_bitspersample);
+ 				written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 				written += t2pWriteFile(output, (tdata_t) ">>\n", 3);
+ 			}
+@@ -5116,16 +5086,16 @@
+ tsize_t t2p_write_pdf_xreftable(T2P* t2p, TIFF* output){
+ 
+ 	tsize_t written=0;
+-	char buffer[21];
++	char buffer[64];
+ 	int buflen=0;
+ 	uint32 i=0;
+ 
+ 	written += t2pWriteFile(output, (tdata_t) "xref\n0 ", 7);
+-	buflen=sprintf(buffer, "%lu", (unsigned long)(t2p->pdf_xrefcount + 1));
++	buflen=snprintf(buffer, sizeof(buffer), "%lu", (unsigned long)(t2p->pdf_xrefcount + 1));
+ 	written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+ 	written += t2pWriteFile(output, (tdata_t) " \n0000000000 65535 f \n", 22);
+ 	for (i=0;i<t2p->pdf_xrefcount;i++){
+-		sprintf(buffer, "%.10lu 00000 n \n",
++		snprintf(buffer, sizeof(buffer), "%.10lu 00000 n \n",
+ 			(unsigned long)t2p->pdf_xrefoffsets[i]);
+ 		written += t2pWriteFile(output, (tdata_t) buffer, 20);
+ 	}
+@@ -5149,17 +5119,14 @@
+ 		snprintf(t2p->pdf_fileid + i, 9, "%.8X", rand());
+ 
+ 	written += t2pWriteFile(output, (tdata_t) "trailer\n<<\n/Size ", 17);
+-	buflen = sprintf(buffer, "%lu", (unsigned long)(t2p->pdf_xrefcount+1));
++	buflen = snprintf(buffer, sizeof(buffer), "%lu", (unsigned long)(t2p->pdf_xrefcount+1));
+ 	written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+-	_TIFFmemset(buffer, 0x00, 32);	
+ 	written += t2pWriteFile(output, (tdata_t) "\n/Root ", 7);
+-	buflen=sprintf(buffer, "%lu", (unsigned long)t2p->pdf_catalog);
++	buflen=snprintf(buffer, sizeof(buffer), "%lu", (unsigned long)t2p->pdf_catalog);
+ 	written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+-	_TIFFmemset(buffer, 0x00, 32);	
+ 	written += t2pWriteFile(output, (tdata_t) " 0 R \n/Info ", 12);
+-	buflen=sprintf(buffer, "%lu", (unsigned long)t2p->pdf_info);
++	buflen=snprintf(buffer, sizeof(buffer), "%lu", (unsigned long)t2p->pdf_info);
+ 	written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+-	_TIFFmemset(buffer, 0x00, 32);	
+ 	written += t2pWriteFile(output, (tdata_t) " 0 R \n/ID[<", 11);
+ 	written += t2pWriteFile(output, (tdata_t) t2p->pdf_fileid,
+ 				sizeof(t2p->pdf_fileid) - 1);
+@@ -5167,9 +5134,8 @@
+ 	written += t2pWriteFile(output, (tdata_t) t2p->pdf_fileid,
+ 				sizeof(t2p->pdf_fileid) - 1);
+ 	written += t2pWriteFile(output, (tdata_t) ">]\n>>\nstartxref\n", 16);
+-	buflen=sprintf(buffer, "%lu", (unsigned long)t2p->pdf_startxref);
++	buflen=snprintf(buffer, sizeof(buffer), "%lu", (unsigned long)t2p->pdf_startxref);
+ 	written += t2pWriteFile(output, (tdata_t) buffer, buflen);
+-	_TIFFmemset(buffer, 0x00, 32);	
+ 	written += t2pWriteFile(output, (tdata_t) "\n%%EOF\n", 7);
+ 
+ 	return(written);
+diff -Naur tiff-4.0.3.orig/tools/tiff2ps.c tiff-4.0.3/tools/tiff2ps.c
+--- tiff-4.0.3.orig/tools/tiff2ps.c	2011-05-31 13:10:18.000000000 -0400
++++ tiff-4.0.3/tools/tiff2ps.c	2013-05-02 12:02:42.789287990 -0400
+@@ -1781,8 +1781,8 @@
+ 		imageOp = "imagemask";
+ 
+ 	(void)strcpy(im_x, "0");
+-	(void)sprintf(im_y, "%lu", (long) h);
+-	(void)sprintf(im_h, "%lu", (long) h);
++	(void)snprintf(im_y, sizeof(im_y), "%lu", (long) h);
++	(void)snprintf(im_h, sizeof(im_h), "%lu", (long) h);
+ 	tile_width = w;
+ 	tile_height = h;
+ 	if (TIFFIsTiled(tif)) {
+@@ -1803,7 +1803,7 @@
+ 		}
+ 		if (tile_height < h) {
+ 			fputs("/im_y 0 def\n", fd);
+-			(void)sprintf(im_y, "%lu im_y sub", (unsigned long) h);
++			(void)snprintf(im_y, sizeof(im_y), "%lu im_y sub", (unsigned long) h);
+ 		}
+ 	} else {
+ 		repeat_count = tf_numberstrips;
+@@ -1815,7 +1815,7 @@
+ 			fprintf(fd, "/im_h %lu def\n",
+ 			    (unsigned long) tile_height);
+ 			(void)strcpy(im_h, "im_h");
+-			(void)sprintf(im_y, "%lu im_y sub", (unsigned long) h);
++			(void)snprintf(im_y, sizeof(im_y), "%lu im_y sub", (unsigned long) h);
+ 		}
+ 	}
+ 
+diff -Naur tiff-4.0.3.orig/tools/tiffcrop.c tiff-4.0.3/tools/tiffcrop.c
+--- tiff-4.0.3.orig/tools/tiffcrop.c	2010-12-14 09:18:28.000000000 -0500
++++ tiff-4.0.3/tools/tiffcrop.c	2013-05-02 12:02:42.791288005 -0400
+@@ -2077,7 +2077,7 @@
+         return 1;
+         }
+ 
+-      sprintf (filenum, "-%03d%s", findex, export_ext);
++      snprintf(filenum, sizeof(filenum), "-%03d%s", findex, export_ext);
+       filenum[14] = '\0';
+       strncat (exportname, filenum, 15);
+       }
+@@ -2230,8 +2230,8 @@
+ 
+           /* dump.infilename is guaranteed to be NUL termimated and have 20 bytes 
+              fewer than PATH_MAX */ 
+-          memset (temp_filename, '\0', PATH_MAX + 1);              
+-          sprintf (temp_filename, "%s-read-%03d.%s", dump.infilename, dump_images,
++          snprintf(temp_filename, sizeof(temp_filename), "%s-read-%03d.%s",
++		   dump.infilename, dump_images,
+                   (dump.format == DUMP_TEXT) ? "txt" : "raw");
+           if ((dump.infile = fopen(temp_filename, dump.mode)) == NULL)
+             {
+@@ -2249,8 +2249,8 @@
+ 
+           /* dump.outfilename is guaranteed to be NUL termimated and have 20 bytes 
+              fewer than PATH_MAX */ 
+-          memset (temp_filename, '\0', PATH_MAX + 1);              
+-          sprintf (temp_filename, "%s-write-%03d.%s", dump.outfilename, dump_images,
++          snprintf(temp_filename, sizeof(temp_filename), "%s-write-%03d.%s",
++		   dump.outfilename, dump_images,
+                   (dump.format == DUMP_TEXT) ? "txt" : "raw");
+           if ((dump.outfile = fopen(temp_filename, dump.mode)) == NULL)
+             {
+diff -Naur tiff-4.0.3.orig/tools/tiffdither.c tiff-4.0.3/tools/tiffdither.c
+--- tiff-4.0.3.orig/tools/tiffdither.c	2010-03-10 13:56:50.000000000 -0500
++++ tiff-4.0.3/tools/tiffdither.c	2013-05-02 12:02:42.792288013 -0400
+@@ -260,7 +260,7 @@
+ 		TIFFSetField(out, TIFFTAG_FILLORDER, fillorder);
+ 	else
+ 		CopyField(TIFFTAG_FILLORDER, shortv);
+-	sprintf(thing, "Dithered B&W version of %s", argv[optind]);
++	snprintf(thing, sizeof(thing), "Dithered B&W version of %s", argv[optind]);
+ 	TIFFSetField(out, TIFFTAG_IMAGEDESCRIPTION, thing);
+ 	CopyField(TIFFTAG_PHOTOMETRIC, shortv);
+ 	CopyField(TIFFTAG_ORIENTATION, shortv);