Merge branch 'PHP-5.6' into PHP-7.0

* PHP-5.6:
  fix #72519, possible OOB using imagegif
  fix #72512, invalid read or write for palette image when invalid transparent index is used
  Apparently some envs miss SIZE_MAX
  Fix tests
  Fix bug #72618: NULL Pointer Dereference in exif_process_user_comment
  Partial fix for bug #72613 - do not treat negative returns from bz2 as size_t
  Fix bug #72606: heap-buffer-overflow (write) simplestring_addn simplestring.c
  Fix for bug #72558, Integer overflow error within _gdContributionsAlloc()
  Fix bug #72603: Out of bound read in exif_process_IFD_in_MAKERNOTE
  Fix bug #72562 - destroy var_hash properly
  Fix bug #72533 (locale_accept_from_http out-of-bounds access)
  Fix fir bug #72520
  Fix for bug #72513
  Fix for bug #72513
  CS fix and comments with bug ID
  Fix for HTTP_PROXY issue.
  5.6.24RC1
  add tests for bug #72512
  Fixed bug #72512 gdImageTrueColorToPaletteBody allows arbitrary write/read access
  Fixed bug #72479 - same as #72434

Conflicts:
	Zend/zend_virtual_cwd.c
	ext/bz2/bz2.c
	ext/exif/exif.c
	ext/session/session.c
	ext/snmp/snmp.c
	ext/standard/basic_functions.c
	main/SAPI.c
	main/php_variables.c

23 files changed, 358 insertions, 81 deletions

diff --git a/ext/exif/exif.c b/ext/exif/exif.c
index 777694538b..cf221419d5 100644
--- a/ext/exif/exif.c
+++ b/ext/exif/exif.c
@@ -2604,6 +2604,7 @@ static int exif_process_user_comment(image_info_type *ImageInfo, char **pszInfoP
 	*pszEncoding = NULL;
 	/* Copy the comment */
 	if (ByteCount>=8) {
+		const zend_encoding *from, *to;
 		if (!memcmp(szValuePtr, "UNICODE\0", 8)) {
 			*pszEncoding = estrdup((const char*)szValuePtr);
 			szValuePtr = szValuePtr+8;
@@ -2624,15 +2625,16 @@ static int exif_process_user_comment(image_info_type *ImageInfo, char **pszInfoP
 			} else {
 				decode = ImageInfo->decode_unicode_le;
 			}
+			to = zend_multibyte_fetch_encoding(ImageInfo->encode_unicode);
+			from = zend_multibyte_fetch_encoding(decode);
 			/* XXX this will fail again if encoding_converter returns on error something different than SIZE_MAX   */
-			if (zend_multibyte_encoding_converter(
+			if (!to || !from || zend_multibyte_encoding_converter(
 					(unsigned char**)pszInfoPtr,
 					&len,
 					(unsigned char*)szValuePtr,
 					ByteCount,
-					zend_multibyte_fetch_encoding(ImageInfo->encode_unicode),
-					zend_multibyte_fetch_encoding(decode)
-					) == (size_t)-1) {
+					to,
+					from) == (size_t)-1) {
 				len = exif_process_string_raw(pszInfoPtr, szValuePtr, ByteCount);
 			}
 			return len;
@@ -2646,14 +2648,15 @@ static int exif_process_user_comment(image_info_type *ImageInfo, char **pszInfoP
 			szValuePtr = szValuePtr+8;
 			ByteCount -= 8;
 			/* XXX this will fail again if encoding_converter returns on error something different than SIZE_MAX   */
-			if (zend_multibyte_encoding_converter(
+			to = zend_multibyte_fetch_encoding(ImageInfo->encode_jis);
+			from = zend_multibyte_fetch_encoding(ImageInfo->motorola_intel ? ImageInfo->decode_jis_be : ImageInfo->decode_jis_le);
+			if (!to || !from || zend_multibyte_encoding_converter(
 					(unsigned char**)pszInfoPtr,
 					&len,
 					(unsigned char*)szValuePtr,
 					ByteCount,
-					zend_multibyte_fetch_encoding(ImageInfo->encode_jis),
-					zend_multibyte_fetch_encoding(ImageInfo->motorola_intel ? ImageInfo->decode_jis_be : ImageInfo->decode_jis_le)
-					) == (size_t)-1) {
+					to,
+					from) == (size_t)-1) {
 				len = exif_process_string_raw(pszInfoPtr, szValuePtr, ByteCount);
 			}
 			return len;
@@ -2723,6 +2726,12 @@ static int exif_process_IFD_in_MAKERNOTE(image_info_type *ImageInfo, char * valu
 		break;
 	}
 
+	if (maker_note->offset >= value_len) {
+		/* Do not go past the value end */
+		exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "IFD data too short: 0x%04X offset 0x%04X", value_len, maker_note->offset);
+		return FALSE;
+	}
+
 	dir_start = value_ptr + maker_note->offset;
 
 #ifdef EXIF_DEBUG
@@ -2751,10 +2760,19 @@ static int exif_process_IFD_in_MAKERNOTE(image_info_type *ImageInfo, char * valu
 			offset_base = value_ptr;
 			break;
 		case MN_OFFSET_GUESS:
+			if (maker_note->offset + 10 + 4 >= value_len) {
+				/* Can not read dir_start+10 since it's beyond value end */
+				exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "IFD data too short: 0x%04X", value_len);
+				return FALSE;
+			}
 			offset_diff = 2 + NumDirEntries*12 + 4 - php_ifd_get32u(dir_start+10, ImageInfo->motorola_intel);
 #ifdef EXIF_DEBUG
 			exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Using automatic offset correction: 0x%04X", ((int)dir_start-(int)offset_base+maker_note->offset+displacement) + offset_diff);
 #endif
+			if (offset_diff < 0 || offset_diff >= value_len ) {
+				exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "IFD data bad offset: 0x%04X length 0x%04X", offset_diff, value_len);
+				return FALSE;
+			}
 			offset_base = value_ptr + offset_diff;
 			break;
 		default:
@@ -2763,7 +2781,7 @@ static int exif_process_IFD_in_MAKERNOTE(image_info_type *ImageInfo, char * valu
 	}
 
 	if ((2+NumDirEntries*12) > value_len) {
-		exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size: 2 + x%04X*12 = x%04X > x%04X", NumDirEntries, 2+NumDirEntries*12, value_len);
+		exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size: 2 + 0x%04X*12 = 0x%04X > 0x%04X", NumDirEntries, 2+NumDirEntries*12, value_len);
 		return FALSE;
 	}
 
@@ -3049,7 +3067,10 @@ static int exif_process_IFD_TAG(image_info_type *ImageInfo, char *dir_entry, cha
 				break;
 
 			case TAG_MAKER_NOTE:
-				exif_process_IFD_in_MAKERNOTE(ImageInfo, value_ptr, byte_count, offset_base, IFDlength, displacement);
+				if (!exif_process_IFD_in_MAKERNOTE(ImageInfo, value_ptr, byte_count, offset_base, IFDlength, displacement)) {
+					EFREE_IF(outside);
+					return FALSE;
+				}
 				break;
 
 			case TAG_EXIF_IFD_POINTER:
diff --git a/ext/exif/tests/bug54002.phpt b/ext/exif/tests/bug54002.phpt
index c51fa58897..8f85339190 100644
--- a/ext/exif/tests/bug54002.phpt
+++ b/ext/exif/tests/bug54002.phpt
@@ -13,8 +13,4 @@ exif_read_data(__DIR__ . '/bug54002_2.jpeg');
 --EXPECTF--
 Warning: exif_read_data(bug54002_1.jpeg): Process tag(x0205=UndefinedTa): Illegal byte_count in %sbug54002.php on line %d
 
-Warning: exif_read_data(bug54002_1.jpeg): Process tag(xA000=FlashPixVer): Illegal pointer offset(%s) in %sbug54002.php on line %d
-
-Warning: exif_read_data(bug54002_2.jpeg): Process tag(x0205=UndefinedTa): Illegal byte_count in %sbug54002.php on line %d
-
-Warning: exif_read_data(bug54002_2.jpeg): Process tag(xA000=FlashPixVer): Illegal pointer offset(%s) in %sbug54002.php on line %d
+Warning: exif_read_data(bug54002_2.jpeg): Process tag(x0205=UndefinedTa): Illegal byte_count in %sbug54002.php on line %d
\ No newline at end of file
diff --git a/ext/exif/tests/bug62523_2.phpt b/ext/exif/tests/bug62523_2.phpt
index ddc8ae824e..c533d42652 100644
--- a/ext/exif/tests/bug62523_2.phpt
+++ b/ext/exif/tests/bug62523_2.phpt
@@ -10,7 +10,9 @@ echo "Test\n";
 var_dump(count(exif_read_data(__DIR__."/bug62523_2.jpg")));
 ?>
 Done
---EXPECT--
+--EXPECTF--
 Test
-int(76)
+
+Warning: exif_read_data(bug62523_2.jpg): IFD data bad offset: 0xADB23672 length 0x0D94 in %s/bug62523_2.php on line %d
+int(30)
 Done
diff --git a/ext/exif/tests/bug72603.jpeg b/ext/exif/tests/bug72603.jpeg
new file mode 100644
index 0000000000..1764c805fb
--- /dev/null
+++ b/ext/exif/tests/bug72603.jpeg
diff --git a/ext/exif/tests/bug72603.phpt b/ext/exif/tests/bug72603.phpt
new file mode 100644
index 0000000000..a4295f9848
--- /dev/null
+++ b/ext/exif/tests/bug72603.phpt
@@ -0,0 +1,11 @@
+--TEST--
+Bug #72603 (Out of bound read in exif_process_IFD_in_MAKERNOTE)
+--SKIPIF--
+<?php if (!extension_loaded('exif')) print 'skip exif extension not available';?>
+--FILE--
+<?php
+var_dump(count(exif_read_data(dirname(__FILE__) . "/bug72603.jpeg")));
+?>
+--EXPECTF--
+Warning: exif_read_data(bug72603.jpeg): IFD data bad offset: 0x058C length 0x001C in %s/bug72603.php on line %d
+int(13)
\ No newline at end of file
diff --git a/ext/exif/tests/bug72618.jpg b/ext/exif/tests/bug72618.jpg
new file mode 100644
index 0000000000..0a61ae2e02
--- /dev/null
+++ b/ext/exif/tests/bug72618.jpg
diff --git a/ext/exif/tests/bug72618.phpt b/ext/exif/tests/bug72618.phpt
new file mode 100644
index 0000000000..424c0ec402
--- /dev/null
+++ b/ext/exif/tests/bug72618.phpt
@@ -0,0 +1,11 @@
+--TEST--
+Bug 72618 (NULL Pointer Dereference in exif_process_user_comment)
+--SKIPIF--
+<?php if (!extension_loaded('exif')) print 'skip exif extension not available';?>
+--FILE--
+<?php
+var_dump(count(exif_read_data(dirname(__FILE__) . "/bug72618.jpg")));
+?>
+--EXPECTF--
+Warning: exif_read_data(bug72618.jpg): IFD data bad offset: 0x058E length 0x0030 in %s/bug72618.php on line %d
+int(13)
\ No newline at end of file
diff --git a/ext/gd/libgd/gd.c b/ext/gd/libgd/gd.c
index 73548062bb..4292671417 100644
--- a/ext/gd/libgd/gd.c
+++ b/ext/gd/libgd/gd.c
@@ -188,7 +188,7 @@ gdImagePtr gdImageCreateTrueColor (int sx, int sy)
 		return NULL;
 	}
 
-	if (overflow2(sizeof(int), sx)) {
+	if (overflow2(sizeof(int *), sx)) {
 		return NULL;
 	}
 
diff --git a/ext/gd/libgd/gd_interpolation.c b/ext/gd/libgd/gd_interpolation.c
index fb34982582..b9c4c2878e 100644
--- a/ext/gd/libgd/gd_interpolation.c
+++ b/ext/gd/libgd/gd_interpolation.c
@@ -879,20 +879,39 @@ int getPixelInterpolated(gdImagePtr im, const double x, const double y, const in
 static inline LineContribType * _gdContributionsAlloc(unsigned int line_length, unsigned int windows_size)
 {
 	unsigned int u = 0;
-    LineContribType *res;
+	LineContribType *res;
+	int overflow_error = 0;
 
 	res = (LineContribType *) gdMalloc(sizeof(LineContribType));
 	if (!res) {
 		return NULL;
 	}
-    res->WindowSize = windows_size;
-    res->LineLength = line_length;
-    res->ContribRow = (ContributionType *) gdMalloc(line_length * sizeof(ContributionType));
-
-    for (u = 0 ; u < line_length ; u++) {
-        res->ContribRow[u].Weights = (double *) gdMalloc(windows_size * sizeof(double));
-    }
-    return res;
+	res->WindowSize = windows_size;
+	res->LineLength = line_length;
+	if (overflow2(line_length, sizeof(ContributionType))) {
+		return NULL;
+	}
+	res->ContribRow = (ContributionType *) gdMalloc(line_length * sizeof(ContributionType));
+	if (res->ContribRow == NULL) {
+		gdFree(res);
+		return NULL;
+	}
+	for (u = 0 ; u < line_length ; u++) {
+		if (overflow2(windows_size, sizeof(double))) {
+			overflow_error = 1;
+		} else {
+			res->ContribRow[u].Weights = (double *) gdMalloc(windows_size * sizeof(double));
+		}
+		if (overflow_error == 1 || res->ContribRow[u].Weights == NULL) {
+			u--;
+			while (u >= 0) {
+				gdFree(res->ContribRow[u].Weights);
+				u--;
+			}
+			return NULL;
+		}
+	}
+	return res;
 }
 
 static inline void _gdContributionsFree(LineContribType * p)
@@ -907,59 +926,62 @@ static inline void _gdContributionsFree(LineContribType * p)
 
 static inline LineContribType *_gdContributionsCalc(unsigned int line_size, unsigned int src_size, double scale_d,  const interpolation_method pFilter)
 {
-    double width_d;
-    double scale_f_d = 1.0;
-    const double filter_width_d = DEFAULT_BOX_RADIUS;
+	double width_d;
+	double scale_f_d = 1.0;
+	const double filter_width_d = DEFAULT_BOX_RADIUS;
 	int windows_size;
 	unsigned int u;
 	LineContribType *res;
+	int overflow_error = 0;
 
-    if (scale_d < 1.0) {
-        width_d = filter_width_d / scale_d;
-        scale_f_d = scale_d;
-    }  else {
-        width_d= filter_width_d;
-    }
-
-    windows_size = 2 * (int)ceil(width_d) + 1;
-    res = _gdContributionsAlloc(line_size, windows_size);
+	if (scale_d < 1.0) {
+		width_d = filter_width_d / scale_d;
+		scale_f_d = scale_d;
+	}  else {
+		width_d= filter_width_d;
+	}
 
-    for (u = 0; u < line_size; u++) {
-        const double dCenter = (double)u / scale_d;
-        /* get the significant edge points affecting the pixel */
-        register int iLeft = MAX(0, (int)floor (dCenter - width_d));
-        int iRight = MIN((int)ceil(dCenter + width_d), (int)src_size - 1);
-        double dTotalWeight = 0.0;
+	windows_size = 2 * (int)ceil(width_d) + 1;
+	res = _gdContributionsAlloc(line_size, windows_size);
+	if (res == NULL) {
+		return NULL;
+	}
+	for (u = 0; u < line_size; u++) {
+	const double dCenter = (double)u / scale_d;
+	/* get the significant edge points affecting the pixel */
+	register int iLeft = MAX(0, (int)floor (dCenter - width_d));
+	int iRight = MIN((int)ceil(dCenter + width_d), (int)src_size - 1);
+	double dTotalWeight = 0.0;
 		int iSrc;
 
-        /* Cut edge points to fit in filter window in case of spill-off */
-        if (iRight - iLeft + 1 > windows_size)  {
-            if (iLeft < ((int)src_size - 1 / 2))  {
-                iLeft++;
-            } else {
-                iRight--;
-            }
-        }
+	/* Cut edge points to fit in filter window in case of spill-off */
+	if (iRight - iLeft + 1 > windows_size)  {
+		if (iLeft < ((int)src_size - 1 / 2))  {
+			iLeft++;
+		} else {
+			iRight--;
+		}
+	}
 
-        res->ContribRow[u].Left = iLeft;
-        res->ContribRow[u].Right = iRight;
+	res->ContribRow[u].Left = iLeft;
+	res->ContribRow[u].Right = iRight;
 
-        for (iSrc = iLeft; iSrc <= iRight; iSrc++) {
-            dTotalWeight += (res->ContribRow[u].Weights[iSrc-iLeft] =  scale_f_d * (*pFilter)(scale_f_d * (dCenter - (double)iSrc)));
-        }
+	for (iSrc = iLeft; iSrc <= iRight; iSrc++) {
+		dTotalWeight += (res->ContribRow[u].Weights[iSrc-iLeft] =  scale_f_d * (*pFilter)(scale_f_d * (dCenter - (double)iSrc)));
+	}
 
 		if (dTotalWeight < 0.0) {
 			_gdContributionsFree(res);
 			return NULL;
 		}
 
-        if (dTotalWeight > 0.0) {
-            for (iSrc = iLeft; iSrc <= iRight; iSrc++) {
-                res->ContribRow[u].Weights[iSrc-iLeft] /= dTotalWeight;
-            }
-        }
-   }
-   return res;
+	if (dTotalWeight > 0.0) {
+		for (iSrc = iLeft; iSrc <= iRight; iSrc++) {
+			res->ContribRow[u].Weights[iSrc-iLeft] /= dTotalWeight;
+		}
+	}
+	}
+	return res;
 }
 
 static inline void _gdScaleRow(gdImagePtr pSrc,  unsigned int src_width, gdImagePtr dst, unsigned int dst_width, unsigned int row, LineContribType *contrib)
diff --git a/ext/gd/tests/bug72512_0.phpt b/ext/gd/tests/bug72512_0.phpt
new file mode 100644
index 0000000000..5f98662d45
--- /dev/null
+++ b/ext/gd/tests/bug72512_0.phpt
@@ -0,0 +1,18 @@
+--TEST--
+Bug #72512 gdImageTrueColorToPaletteBody allows arbitrary write/read access, var 0
+--SKIPIF--
+<?php
+	if (!extension_loaded('gd')) die("skip gd extension not available\n");
+?>
+--FILE--
+<?php
+
+$img = imagecreatetruecolor(13, 1007);
+
+imagecolortransparent($img, -10066304);
+imagetruecolortopalette($img, TRUE, 3);
+imagescale($img, 1, 65535);
+?>
+==DONE==
+--EXPECT--
+==DONE==
diff --git a/ext/gd/tests/bug72512_1.phpt b/ext/gd/tests/bug72512_1.phpt
new file mode 100644
index 0000000000..bba01a7118
--- /dev/null
+++ b/ext/gd/tests/bug72512_1.phpt
@@ -0,0 +1,18 @@
+--TEST--
+Bug #72512 gdImageTrueColorToPaletteBody allows arbitrary write/read access, var 1
+--SKIPIF--
+<?php
+	if (!extension_loaded('gd')) die("skip gd extension not available\n");
+?>
+--FILE--
+<?php
+
+$img = imagecreatetruecolor(100, 100);
+imagecolortransparent($img, -1000000);
+imagetruecolortopalette($img, TRUE, 3);
+imagecolortransparent($img, 9);
+
+?>
+==DONE==
+--EXPECT--
+==DONE==
diff --git a/ext/intl/locale/locale_methods.c b/ext/intl/locale/locale_methods.c
index 857c14a005..32a70d2f7f 100644
--- a/ext/intl/locale/locale_methods.c
+++ b/ext/intl/locale/locale_methods.c
@@ -1598,6 +1598,24 @@ PHP_FUNCTION(locale_accept_from_http)
 		"locale_accept_from_http: unable to parse input parameters", 0 );
 		RETURN_FALSE;
 	}
+	if(http_accept_len > ULOC_FULLNAME_CAPACITY) {
+		/* check each fragment, if any bigger than capacity, can't do it due to bug #72533 */
+		char *start = http_accept;
+		char *end;
+		size_t len;
+		do {
+			end = strchr(start, ',');
+			len = end ? end-start : http_accept_len-(start-http_accept);
+			if(len > ULOC_FULLNAME_CAPACITY) {
+				intl_error_set( NULL, U_ILLEGAL_ARGUMENT_ERROR,
+						"locale_accept_from_http: locale string too long", 0 TSRMLS_CC );
+				RETURN_FALSE;
+			}
+			if(end) {
+				start = end+1;
+			}
+		} while(end != NULL);
+	}
 
 	available = ures_openAvailableLocales(NULL, &status);
 	INTL_CHECK_STATUS(status, "locale_accept_from_http: failed to retrieve locale list");
diff --git a/ext/intl/tests/bug72533.phpt b/ext/intl/tests/bug72533.phpt
new file mode 100644
index 0000000000..c7fcba39d0
--- /dev/null
+++ b/ext/intl/tests/bug72533.phpt
@@ -0,0 +1,30 @@
+--TEST--
+Bug #72533 (locale_accept_from_http out-of-bounds access)
+--SKIPIF--
+<?php if( !extension_loaded( 'intl' ) ) print 'skip'; ?>
+--FILE--
+<?php
+
+function ut_main()
+{
+    $ret = var_export(ut_loc_accept_http(str_repeat('x', 256)), true);
+    $ret .= "\n";
+	if(intl_is_failure(intl_get_error_code())) {
+		$ret .= var_export(intl_get_error_message(), true);
+	}
+    $ret .= "\n";
+    $ret .= var_export(ut_loc_accept_http(str_repeat('en,', 256)), true);
+    $ret .= "\n";
+	if(intl_is_failure(intl_get_error_code())) {
+		$ret .= var_export(intl_get_error_message(), true);
+	}
+    return $ret;
+}
+
+include_once( 'ut_common.inc' );
+ut_run();
+?>
+--EXPECTF--
+false
+'locale_accept_from_http: locale string too long: U_ILLEGAL_ARGUMENT_ERROR'
+'en'
\ No newline at end of file
diff --git a/ext/session/session.c b/ext/session/session.c
index 5b7841de5c..380cad5b58 100644
--- a/ext/session/session.c
+++ b/ext/session/session.c
@@ -971,6 +971,7 @@ PS_SERIALIZER_DECODE_FUNC(php_binary) /* {{{ */
 		namelen = ((unsigned char)(*p)) & (~PS_BIN_UNDEF);
 
 		if (namelen < 0 || namelen > PS_BIN_MAX || (p + namelen) >= endptr) {
+			PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
 			return FAILURE;
 		}
 
diff --git a/ext/session/tests/bug72562.phpt b/ext/session/tests/bug72562.phpt
new file mode 100644
index 0000000000..d85e48b069
--- /dev/null
+++ b/ext/session/tests/bug72562.phpt
@@ -0,0 +1,44 @@
+--TEST--
+Bug #72562: Use After Free in unserialize() with Unexpected Session Deserialization
+--SKIPIF--
+<?php include('skipif.inc'); ?>
+--FILE--
+<?php
+
+ini_set('session.serialize_handler', 'php_binary');
+session_start();
+$sess = "\x1xi:1;\x2y";
+session_decode($sess);
+$uns_1 = '{';
+$out_1[] = unserialize($uns_1);
+unset($out_1);
+$fakezval = ptr2str(1122334455);
+$fakezval .= ptr2str(0);
+$fakezval .= "\x00\x00\x00\x00";
+$fakezval .= "\x01";
+$fakezval .= "\x00";
+$fakezval .= "\x00\x00";
+for ($i = 0; $i < 5; $i++) {
+  $v[$i] = $fakezval.$i;
+}
+$uns_2 = 'R:2;';
+$out_2 = unserialize($uns_2);
+var_dump($out_2);
+
+function ptr2str($ptr)
+{
+	$out = '';
+	for ($i = 0; $i < 8; $i++) {
+		$out .= chr($ptr & 0xff);
+		$ptr >>= 8;
+	}
+	return $out;
+}
+?>
+--EXPECTF--
+Warning: session_decode(): Failed to decode session object. Session has been destroyed in %s/bug72562.php on line %d
+
+Notice: unserialize(): Error at offset 0 of 1 bytes in %s/bug72562.php on line %d
+
+Notice: unserialize(): Error at offset 4 of 4 bytes in %s/bug72562.php on line %d
+bool(false)
diff --git a/ext/snmp/snmp.c b/ext/snmp/snmp.c
index 67e39f1645..7b685ff5dc 100644
--- a/ext/snmp/snmp.c
+++ b/ext/snmp/snmp.c
@@ -2071,6 +2071,14 @@ static int php_snmp_has_property(zval *object, zval *member, int has_set_exists,
 }
 /* }}} */
 
+static HashTable *php_snmp_get_gc(zval *object, zval ***gc_data, int *gc_data_count TSRMLS_DC) /* {{{ */
+{
+	*gc_data = NULL;
+	*gc_data_count = 0;
+	return zend_std_get_properties(object TSRMLS_CC);
+}
+/* }}} */
+
 /* {{{ php_snmp_get_properties(zval *object)
    Returns all object properties. Injects SNMP properties into object on first call */
 static HashTable *php_snmp_get_properties(zval *object)
@@ -2361,6 +2369,7 @@ PHP_MINIT_FUNCTION(snmp)
 	php_snmp_object_handlers.write_property = php_snmp_write_property;
 	php_snmp_object_handlers.has_property = php_snmp_has_property;
 	php_snmp_object_handlers.get_properties = php_snmp_get_properties;
+	php_snmp_object_handlers.get_gc = php_snmp_get_gc;
 
 	/* Register SNMP Class */
 	INIT_CLASS_ENTRY(ce, "SNMP", php_snmp_class_methods);
diff --git a/ext/snmp/tests/bug72479.phpt b/ext/snmp/tests/bug72479.phpt
new file mode 100644
index 0000000000..0308754360
--- /dev/null
+++ b/ext/snmp/tests/bug72479.phpt
@@ -0,0 +1,35 @@
+--TEST--                                 
+Bug #72479: Use After Free Vulnerability in SNMP with GC and unserialize()
+--SKIPIF--
+<?php
+require_once(dirname(__FILE__).'/skipif.inc');
+?>
+--FILE--
+<?php
+$arr = [1, [1, 2, 3, 4, 5], 3, 4, 5];
+$poc = 'a:3:{i:1;N;i:2;O:4:"snmp":1:{s:11:"quick_print";'.serialize($arr).'}i:1;R:7;}';
+$out = unserialize($poc);
+gc_collect_cycles();
+$fakezval = ptr2str(1122334455);
+$fakezval .= ptr2str(0);
+$fakezval .= "\x00\x00\x00\x00";
+$fakezval .= "\x01";
+$fakezval .= "\x00";
+$fakezval .= "\x00\x00";
+for ($i = 0; $i < 5; $i++) {
+    $v[$i] = $fakezval.$i;
+}
+var_dump($out[1]);
+
+function ptr2str($ptr)
+{
+    $out = '';
+    for ($i = 0; $i < 8; $i++) {
+        $out .= chr($ptr & 0xff);
+        $ptr >>= 8;
+    }
+    return $out;
+}
+?>
+--EXPECT--
+int(1)
\ No newline at end of file
diff --git a/ext/standard/basic_functions.c b/ext/standard/basic_functions.c
index 1eb8e1c02c..c4505886d6 100644
--- a/ext/standard/basic_functions.c
+++ b/ext/standard/basic_functions.c
@@ -4009,24 +4009,27 @@ PHP_FUNCTION(long2ip)
  * System Functions *
  ********************/
 
-/* {{{ proto string getenv(string varname)
+/* {{{ proto string getenv(string varname[, bool local_only])
    Get the value of an environment variable */
 PHP_FUNCTION(getenv)
 {
 	char *ptr, *str;
 	size_t str_len;
+	zend_bool local_only = 0;
 
-	if (zend_parse_parameters(ZEND_NUM_ARGS(), "s", &str, &str_len) == FAILURE) {
+	if (zend_parse_parameters(ZEND_NUM_ARGS(), "s|b", &str, &str_len, &local_only) == FAILURE) {
 		RETURN_FALSE;
 	}
 
-	/* SAPI method returns an emalloc()'d string */
-	ptr = sapi_getenv(str, str_len);
-	if (ptr) {
-		// TODO: avoid realocation ???
-		RETVAL_STRING(ptr);
-		efree(ptr);
-		return;
+	if (!local_only) {
+		/* SAPI method returns an emalloc()'d string */
+		ptr = sapi_getenv(str, str_len);
+		if (ptr) {
+			// TODO: avoid realocation ???
+			RETVAL_STRING(ptr);
+			efree(ptr);
+			return;
+		}
 	}
 #ifdef PHP_WIN32
 	{
diff --git a/ext/xmlrpc/libxmlrpc/simplestring.c b/ext/xmlrpc/libxmlrpc/simplestring.c
index 026567e5f5..c88754fb9a 100644
--- a/ext/xmlrpc/libxmlrpc/simplestring.c
+++ b/ext/xmlrpc/libxmlrpc/simplestring.c
@@ -172,6 +172,9 @@ void simplestring_free(simplestring* string) {
 }
 /******/
 
+#ifndef SIZE_MAX
+#define SIZE_MAX ((size_t)-1)
+#endif
 /****f* FUNC/simplestring_addn
  * NAME
  *   simplestring_addn
@@ -190,18 +193,31 @@ void simplestring_free(simplestring* string) {
  *   simplestring_add ()
  * SOURCE
  */
-void simplestring_addn(simplestring* target, const char* source, int add_len) {
+void simplestring_addn(simplestring* target, const char* source, size_t add_len) {
+   size_t newsize = target->size, incr = 0;
    if(target && source) {
       if(!target->str) {
          simplestring_init_str(target);
       }
+
+      if((SIZE_MAX - add_len) < target->len || (SIZE_MAX - add_len - 1) < target->len) {
+    	  /* check for overflows, if there's a potential overflow do nothing */
+    	  return;
+      }
+
       if(target->len + add_len + 1 > target->size) {
          /* newsize is current length + new length */
-         int newsize = target->len + add_len + 1;
-         int incr = target->size * 2;
+         newsize = target->len + add_len + 1;
+         incr = target->size * 2;
 
          /* align to SIMPLESTRING_INCR increments */
-         newsize = newsize - (newsize % incr) + incr;
+         if (incr) {
+            newsize = newsize - (newsize % incr) + incr;
+         }
+         if(newsize < (target->len + add_len + 1)) {
+        	 /* some kind of overflow happened */
+        	 return;
+         }
          target->str = (char*)realloc(target->str, newsize);
 
          target->size = target->str ? newsize : 0;
diff --git a/ext/xmlrpc/libxmlrpc/simplestring.h b/ext/xmlrpc/libxmlrpc/simplestring.h
index 59186a7764..b46b0d779a 100644
--- a/ext/xmlrpc/libxmlrpc/simplestring.h
+++ b/ext/xmlrpc/libxmlrpc/simplestring.h
@@ -63,7 +63,7 @@ void simplestring_init(simplestring* string);
 void simplestring_clear(simplestring* string);
 void simplestring_free(simplestring* string);
 void simplestring_add(simplestring* string, const char* add);
-void simplestring_addn(simplestring* string, const char* add, int add_len);
+void simplestring_addn(simplestring* string, const char* add, size_t add_len);
 
 #ifdef __cplusplus
 }
diff --git a/ext/zip/zip_stream.c b/ext/zip/zip_stream.c
index a1f620182c..d586233dee 100644
--- a/ext/zip/zip_stream.c
+++ b/ext/zip/zip_stream.c
@@ -264,7 +264,7 @@ php_stream *php_stream_zip_opener(php_stream_wrapper *wrapper,
 											zend_string **opened_path,
 											php_stream_context *context STREAMS_DC)
 {
-	int path_len;
+	size_t path_len;
 
 	zend_string *file_basename;
 	char file_dirname[MAXPATHLEN];
@@ -272,7 +272,7 @@ php_stream *php_stream_zip_opener(php_stream_wrapper *wrapper,
 	struct zip *za;
 	struct zip_file *zf = NULL;
 	char *fragment;
-	int fragment_len;
+	size_t fragment_len;
 	int err;
 
 	php_stream *stream = NULL;
diff --git a/main/SAPI.c b/main/SAPI.c
index 496bbfbd12..9029e2e570 100644
--- a/main/SAPI.c
+++ b/main/SAPI.c
@@ -1020,6 +1020,10 @@ SAPI_API zend_stat_t *sapi_get_stat(void)
 
 SAPI_API char *sapi_getenv(char *name, size_t name_len)
 {
+	if (!strncasecmp(name, "HTTP_PROXY", name_len)) {
+		/* Ugly fix for HTTP_PROXY issue, see bug #72573 */
+		return NULL;
+	}
 	if (sapi_module.getenv) {
 		char *value, *tmp = sapi_module.getenv(name, name_len);
 		if (tmp) {
diff --git a/main/php_variables.c b/main/php_variables.c
index 73274d7695..5791990038 100644
--- a/main/php_variables.c
+++ b/main/php_variables.c
@@ -730,6 +730,22 @@ static zend_bool php_auto_globals_create_files(zend_string *name)
 	return 0; /* don't rearm */
 }
 
+/* Upgly hack to fix HTTP_PROXY issue, see bug #72573 */
+static void check_http_proxy(HashTable *var_table)
+{
+	if (zend_hash_str_exists(var_table, "HTTP_PROXY", sizeof("HTTP_PROXY")-1)) {
+		char *local_proxy = getenv("HTTP_PROXY");
+
+		if (!local_proxy) {
+			zend_hash_str_del(var_table, "HTTP_PROXY", sizeof("HTTP_PROXY")-1);
+		} else {
+			zval local_zval;
+			ZVAL_STRING(&local_zval, local_proxy);
+			zend_hash_str_update(var_table, "HTTP_PROXY", sizeof("HTTP_PROXY")-1, &local_zval);
+		}
+	}
+}
+
 static zend_bool php_auto_globals_create_server(zend_string *name)
 {
 	if (PG(variables_order) && (strchr(PG(variables_order),'S') || strchr(PG(variables_order),'s'))) {
@@ -755,6 +771,7 @@ static zend_bool php_auto_globals_create_server(zend_string *name)
 		array_init(&PG(http_globals)[TRACK_VARS_SERVER]);
 	}
 
+	check_http_proxy(Z_ARRVAL(PG(http_globals)[TRACK_VARS_SERVER]));
 	zend_hash_update(&EG(symbol_table), name, &PG(http_globals)[TRACK_VARS_SERVER]);
 	Z_ADDREF(PG(http_globals)[TRACK_VARS_SERVER]);
 
@@ -770,6 +787,7 @@ static zend_bool php_auto_globals_create_env(zend_string *name)
 		php_import_environment_variables(&PG(http_globals)[TRACK_VARS_ENV]);
 	}
 
+	check_http_proxy(Z_ARRVAL(PG(http_globals)[TRACK_VARS_ENV]));
 	zend_hash_update(&EG(symbol_table), name, &PG(http_globals)[TRACK_VARS_ENV]);
 	Z_ADDREF(PG(http_globals)[TRACK_VARS_ENV]);