1 files changed, 92 insertions, 0 deletions
diff --git a/bug72928.patch b/bug72928.patch
new file mode 100644
index 0000000..82189ae
--- /dev/null
+++ b/bug72928.patch
@@ -0,0 +1,92 @@
+Backported from 5.6.26 by Remi.
+Binary diff dropped.
+
+
+From dd69327ad783ea93f1e0a9e358974c7b098f29cc Mon Sep 17 00:00:00 2001
+From: Stanislav Malyshev <stas@php.net>
+Date: Sun, 4 Sep 2016 22:07:35 -0700
+Subject: [PATCH] Fix bug #72928 - Out of bound when verify signature of zip
+ phar in phar_parse_zipfile
+
+---
+ ext/phar/tests/bug72928.phpt |  18 ++++++++++++++++++
+ ext/phar/tests/bug72928.zip  | Bin 0 -> 140 bytes
+ ext/phar/util.c              |  28 ++++++++++++++++++++++++++++
+ ext/phar/zip.c               |   2 +-
+ 4 files changed, 47 insertions(+), 1 deletion(-)
+ create mode 100644 ext/phar/tests/bug72928.phpt
+ create mode 100644 ext/phar/tests/bug72928.zip
+
+diff --git a/ext/phar/util.c b/ext/phar/util.c
+index 4bbd867..828be8f 100644
+--- a/ext/phar/util.c
++++ b/ext/phar/util.c
+@@ -1657,6 +1657,13 @@ int phar_verify_signature(php_stream *fp, size_t end_of_phar, php_uint32 sig_typ
+ 			unsigned char digest[64];
+ 			PHP_SHA512_CTX context;
+ 
++			if (sig_len < sizeof(digest)) {
++				if (error) {
++					spprintf(error, 0, "broken signature");
++				}
++				return FAILURE;
++			}
++
+ 			PHP_SHA512Init(&context);
+ 			read_len = end_of_phar;
+ 
+@@ -1690,6 +1697,13 @@ int phar_verify_signature(php_stream *fp, size_t end_of_phar, php_uint32 sig_typ
+ 			unsigned char digest[32];
+ 			PHP_SHA256_CTX context;
+ 
++			if (sig_len < sizeof(digest)) {
++				if (error) {
++					spprintf(error, 0, "broken signature");
++				}
++				return FAILURE;
++			}
++
+ 			PHP_SHA256Init(&context);
+ 			read_len = end_of_phar;
+ 
+@@ -1731,6 +1745,13 @@ int phar_verify_signature(php_stream *fp, size_t end_of_phar, php_uint32 sig_typ
+ 			unsigned char digest[20];
+ 			PHP_SHA1_CTX  context;
+ 
++			if (sig_len < sizeof(digest)) {
++				if (error) {
++					spprintf(error, 0, "broken signature");
++				}
++				return FAILURE;
++			}
++
+ 			PHP_SHA1Init(&context);
+ 			read_len = end_of_phar;
+ 
+@@ -1764,6 +1785,13 @@ int phar_verify_signature(php_stream *fp, size_t end_of_phar, php_uint32 sig_typ
+ 			unsigned char digest[16];
+ 			PHP_MD5_CTX   context;
+ 
++			if (sig_len < sizeof(digest)) {
++				if (error) {
++					spprintf(error, 0, "broken signature");
++				}
++				return FAILURE;
++			}
++
+ 			PHP_MD5Init(&context);
+ 			read_len = end_of_phar;
+ 
+diff --git a/ext/phar/zip.c b/ext/phar/zip.c
+index bf895e7..ed156a2 100644
+--- a/ext/phar/zip.c
++++ b/ext/phar/zip.c
+@@ -430,7 +430,7 @@ int phar_parse_zipfile(php_stream *fp, char *fname, int fname_len, char *alias,
+ 			php_stream_seek(fp, sizeof(phar_zip_file_header) + entry.header_offset + entry.filename_len + PHAR_GET_16(zipentry.extra_len), SEEK_SET);
+ 			sig = (char *) emalloc(entry.uncompressed_filesize);
+ 			read = php_stream_read(fp, sig, entry.uncompressed_filesize);
+-			if (read != entry.uncompressed_filesize) {
++			if (read != entry.uncompressed_filesize || read <= 8) {
+ 				php_stream_close(sigfile);
+ 				efree(sig);
+ 				PHAR_ZIP_FAIL("signature cannot be read");