[OE-core] [PATCH 1/2] tiff: Security fix CVE-2015-8781
Armin Kuster
akuster808 at gmail.com
Sat Jan 30 01:39:36 UTC 2016
From: Armin Kuster <akuster at mvista.com>
CVE-2015-8781 libtiff: out-of-bounds writes for invalid images
Signed-off-by: Armin Kuster <akuster at mvista.com>
---
.../libtiff/files/CVE-2015-8781.patch | 196 +++++++++++++++++++++
meta/recipes-multimedia/libtiff/tiff_4.0.4.bb | 1 +
2 files changed, 197 insertions(+)
create mode 100644 meta/recipes-multimedia/libtiff/files/CVE-2015-8781.patch
diff --git a/meta/recipes-multimedia/libtiff/files/CVE-2015-8781.patch b/meta/recipes-multimedia/libtiff/files/CVE-2015-8781.patch
new file mode 100644
index 0000000..bdbe696
--- /dev/null
+++ b/meta/recipes-multimedia/libtiff/files/CVE-2015-8781.patch
@@ -0,0 +1,196 @@
+From aaab5c3c9d2a2c6984f23ccbc79702610439bc65 Mon Sep 17 00:00:00 2001
+From: erouault <erouault>
+Date: Sun, 27 Dec 2015 16:25:11 +0000
+Subject: [PATCH] * libtiff/tif_luv.c: fix potential out-of-bound writes in
+ decode functions in non debug builds by replacing assert()s by regular if
+ checks (bugzilla #2522). Fix potential out-of-bound reads in case of short
+ input data.
+
+Upstream-Status: Backport
+
+https://github.com/vadz/libtiff/commit/aaab5c3c9d2a2c6984f23ccbc79702610439bc65
+hand applied Changelog changes
+
+CVE: CVE-2015-8781
+
+Signed-off-by: Armin Kuster <akuster at mvista.com>
+---
+ ChangeLog | 7 +++++++
+ libtiff/tif_luv.c | 55 ++++++++++++++++++++++++++++++++++++++++++++-----------
+ 2 files changed, 51 insertions(+), 11 deletions(-)
+
+Index: tiff-4.0.4/ChangeLog
+===================================================================
+--- tiff-4.0.4.orig/ChangeLog
++++ tiff-4.0.4/ChangeLog
+@@ -1,3 +1,11 @@
++2015-12-27 Even Rouault <even.rouault at spatialys.com>
++
++ * libtiff/tif_luv.c: fix potential out-of-bound writes in decode
++ functions in non debug builds by replacing assert()s by regular if
++ checks (bugzilla #2522).
++ Fix potential out-of-bound reads in case of short input data.
++
++
+ 2015-06-21 Bob Friesenhahn <bfriesen at simple.dallas.tx.us>
+
+ * libtiff 4.0.4 released.
+Index: tiff-4.0.4/libtiff/tif_luv.c
+===================================================================
+--- tiff-4.0.4.orig/libtiff/tif_luv.c
++++ tiff-4.0.4/libtiff/tif_luv.c
+@@ -202,7 +202,11 @@ LogL16Decode(TIFF* tif, uint8* op, tmsiz
+ if (sp->user_datafmt == SGILOGDATAFMT_16BIT)
+ tp = (int16*) op;
+ else {
+- assert(sp->tbuflen >= npixels);
++ if(sp->tbuflen < npixels) {
++ TIFFErrorExt(tif->tif_clientdata, module,
++ "Translation buffer too short");
++ return (0);
++ }
+ tp = (int16*) sp->tbuf;
+ }
+ _TIFFmemset((void*) tp, 0, npixels*sizeof (tp[0]));
+@@ -211,9 +215,11 @@ LogL16Decode(TIFF* tif, uint8* op, tmsiz
+ cc = tif->tif_rawcc;
+ /* get each byte string */
+ for (shft = 2*8; (shft -= 8) >= 0; ) {
+- for (i = 0; i < npixels && cc > 0; )
++ for (i = 0; i < npixels && cc > 0; ) {
+ if (*bp >= 128) { /* run */
+- rc = *bp++ + (2-128); /* TODO: potential input buffer overrun when decoding corrupt or truncated data */
++ if( cc < 2 )
++ break;
++ rc = *bp++ + (2-128);
+ b = (int16)(*bp++ << shft);
+ cc -= 2;
+ while (rc-- && i < npixels)
+@@ -223,6 +229,7 @@ LogL16Decode(TIFF* tif, uint8* op, tmsiz
+ while (--cc && rc-- && i < npixels)
+ tp[i++] |= (int16)*bp++ << shft;
+ }
++ }
+ if (i != npixels) {
+ #if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ TIFFErrorExt(tif->tif_clientdata, module,
+@@ -268,13 +275,17 @@ LogLuvDecode24(TIFF* tif, uint8* op, tms
+ if (sp->user_datafmt == SGILOGDATAFMT_RAW)
+ tp = (uint32 *)op;
+ else {
+- assert(sp->tbuflen >= npixels);
++ if(sp->tbuflen < npixels) {
++ TIFFErrorExt(tif->tif_clientdata, module,
++ "Translation buffer too short");
++ return (0);
++ }
+ tp = (uint32 *) sp->tbuf;
+ }
+ /* copy to array of uint32 */
+ bp = (unsigned char*) tif->tif_rawcp;
+ cc = tif->tif_rawcc;
+- for (i = 0; i < npixels && cc > 0; i++) {
++ for (i = 0; i < npixels && cc >= 3; i++) {
+ tp[i] = bp[0] << 16 | bp[1] << 8 | bp[2];
+ bp += 3;
+ cc -= 3;
+@@ -325,7 +336,11 @@ LogLuvDecode32(TIFF* tif, uint8* op, tms
+ if (sp->user_datafmt == SGILOGDATAFMT_RAW)
+ tp = (uint32*) op;
+ else {
+- assert(sp->tbuflen >= npixels);
++ if(sp->tbuflen < npixels) {
++ TIFFErrorExt(tif->tif_clientdata, module,
++ "Translation buffer too short");
++ return (0);
++ }
+ tp = (uint32*) sp->tbuf;
+ }
+ _TIFFmemset((void*) tp, 0, npixels*sizeof (tp[0]));
+@@ -334,11 +349,13 @@ LogLuvDecode32(TIFF* tif, uint8* op, tms
+ cc = tif->tif_rawcc;
+ /* get each byte string */
+ for (shft = 4*8; (shft -= 8) >= 0; ) {
+- for (i = 0; i < npixels && cc > 0; )
++ for (i = 0; i < npixels && cc > 0; ) {
+ if (*bp >= 128) { /* run */
++ if( cc < 2 )
++ break;
+ rc = *bp++ + (2-128);
+ b = (uint32)*bp++ << shft;
+- cc -= 2; /* TODO: potential input buffer overrun when decoding corrupt or truncated data */
++ cc -= 2;
+ while (rc-- && i < npixels)
+ tp[i++] |= b;
+ } else { /* non-run */
+@@ -346,6 +363,7 @@ LogLuvDecode32(TIFF* tif, uint8* op, tms
+ while (--cc && rc-- && i < npixels)
+ tp[i++] |= (uint32)*bp++ << shft;
+ }
++ }
+ if (i != npixels) {
+ #if defined(__WIN32__) && (defined(_MSC_VER) || defined(__MINGW32__))
+ TIFFErrorExt(tif->tif_clientdata, module,
+@@ -413,6 +431,7 @@ LogLuvDecodeTile(TIFF* tif, uint8* bp, t
+ static int
+ LogL16Encode(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
+ {
++ static const char module[] = "LogL16Encode";
+ LogLuvState* sp = EncoderState(tif);
+ int shft;
+ tmsize_t i;
+@@ -433,7 +452,11 @@ LogL16Encode(TIFF* tif, uint8* bp, tmsiz
+ tp = (int16*) bp;
+ else {
+ tp = (int16*) sp->tbuf;
+- assert(sp->tbuflen >= npixels);
++ if(sp->tbuflen < npixels) {
++ TIFFErrorExt(tif->tif_clientdata, module,
++ "Translation buffer too short");
++ return (0);
++ }
+ (*sp->tfunc)(sp, bp, npixels);
+ }
+ /* compress each byte string */
+@@ -506,6 +529,7 @@ LogL16Encode(TIFF* tif, uint8* bp, tmsiz
+ static int
+ LogLuvEncode24(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
+ {
++ static const char module[] = "LogLuvEncode24";
+ LogLuvState* sp = EncoderState(tif);
+ tmsize_t i;
+ tmsize_t npixels;
+@@ -521,7 +545,11 @@ LogLuvEncode24(TIFF* tif, uint8* bp, tms
+ tp = (uint32*) bp;
+ else {
+ tp = (uint32*) sp->tbuf;
+- assert(sp->tbuflen >= npixels);
++ if(sp->tbuflen < npixels) {
++ TIFFErrorExt(tif->tif_clientdata, module,
++ "Translation buffer too short");
++ return (0);
++ }
+ (*sp->tfunc)(sp, bp, npixels);
+ }
+ /* write out encoded pixels */
+@@ -553,6 +581,7 @@ LogLuvEncode24(TIFF* tif, uint8* bp, tms
+ static int
+ LogLuvEncode32(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
+ {
++ static const char module[] = "LogLuvEncode32";
+ LogLuvState* sp = EncoderState(tif);
+ int shft;
+ tmsize_t i;
+@@ -574,7 +603,11 @@ LogLuvEncode32(TIFF* tif, uint8* bp, tms
+ tp = (uint32*) bp;
+ else {
+ tp = (uint32*) sp->tbuf;
+- assert(sp->tbuflen >= npixels);
++ if(sp->tbuflen < npixels) {
++ TIFFErrorExt(tif->tif_clientdata, module,
++ "Translation buffer too short");
++ return (0);
++ }
+ (*sp->tfunc)(sp, bp, npixels);
+ }
+ /* compress each byte string */
diff --git a/meta/recipes-multimedia/libtiff/tiff_4.0.4.bb b/meta/recipes-multimedia/libtiff/tiff_4.0.4.bb
index cf3a5f0..6166663 100644
--- a/meta/recipes-multimedia/libtiff/tiff_4.0.4.bb
+++ b/meta/recipes-multimedia/libtiff/tiff_4.0.4.bb
@@ -5,6 +5,7 @@ HOMEPAGE = "http://www.remotesensing.org/libtiff/"
SRC_URI = "ftp://ftp.remotesensing.org/pub/libtiff/tiff-${PV}.tar.gz \
file://libtool2.patch \
+ file://CVE-2015-8781.patch \
"
SRC_URI[md5sum] = "9aee7107408a128c0c7b24286c0db900"
--
2.3.5
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