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SUSE:SLE-12-SP1:GA
php7.5534
php-CVE-2015-8994.patch
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File php-CVE-2015-8994.patch of Package php7.5534
From ecba563f2fa1e027ea91b9ee0d50611273852995 Mon Sep 17 00:00:00 2001 From: Dmitry Stogov <dmitry@zend.com> Date: Wed, 16 Nov 2016 12:43:10 +0300 Subject: [PATCH] Fixed bug #69090 (check cached files permissions) Index: php-7.0.7/ext/opcache/README =================================================================== --- php-7.0.7.orig/ext/opcache/README 2016-05-25 15:14:16.000000000 +0200 +++ php-7.0.7/ext/opcache/README 2017-03-10 13:17:00.810760946 +0100 @@ -102,6 +102,16 @@ opcache.validate_timestamps (default "1" The frequency of the check is controlled by the directive "opcache.revalidate_freq". +opcache.validate_permission (default "0") + Leads OPcache to check file readability on each access to cached file. + This directive should be enabled in shared hosting environment, when few + users (PHP-FPM pools) reuse the common OPcache shared memory. + +opcache.validate_root (default "0") + This directive prevents file name collisions in different "chroot" + environments. It should be enabled for sites that may serve requests in + different "chroot" environments. + opcache.revalidate_freq (default "2") How often (in seconds) to check file timestamps for changes to the shared memory storage allocation. ("1" means validate once per second, but only Index: php-7.0.7/ext/opcache/ZendAccelerator.c =================================================================== --- php-7.0.7.orig/ext/opcache/ZendAccelerator.c 2016-05-25 15:14:16.000000000 +0200 +++ php-7.0.7/ext/opcache/ZendAccelerator.c 2017-03-10 13:19:16.508960740 +0100 @@ -1728,6 +1728,28 @@ zend_op_array *persistent_compile_file(z ZCG(counted) = 1; } + /* Revalidate acessibility of cached file */ + if (EXPECTED(persistent_script != NULL) && + UNEXPECTED(ZCG(accel_directives).validate_permission) && + file_handle->type == ZEND_HANDLE_FILENAME && + UNEXPECTED(access(file_handle->filename, R_OK) != 0)) { + if (type == ZEND_REQUIRE) { +#if ZEND_EXTENSION_API_NO < PHP_5_3_X_API_NO + zend_message_dispatcher(ZMSG_FAILED_REQUIRE_FOPEN, file_handle->filename); +#else + zend_message_dispatcher(ZMSG_FAILED_REQUIRE_FOPEN, file_handle->filename TSRMLS_CC); +#endif + zend_bailout(); + } else { +#if ZEND_EXTENSION_API_NO < PHP_5_3_X_API_NO + zend_message_dispatcher(ZMSG_FAILED_INCLUDE_FOPEN, file_handle->filename); +#else + zend_message_dispatcher(ZMSG_FAILED_INCLUDE_FOPEN, file_handle->filename TSRMLS_CC); +#endif + } + return NULL; + } + SHM_UNPROTECT(); /* If script is found then validate_timestamps if option is enabled */ @@ -2007,6 +2029,31 @@ static void accel_activate(void) return; } +#ifndef ZEND_WIN32 + if (ZCG(accel_directives).validate_root) { + struct stat buf; + + if (stat("/", &buf) != 0) { + ZCG(root_hash) = 0; + } else { + unsigned long x = buf.st_ino; + +#if SIZEOF_LONG == 4 + x = ((x >> 16) ^ x) * 0x45d9f3b; + x = ((x >> 16) ^ x) * 0x45d9f3b; + x = (x >> 16) ^ x; +#elif SIZEOF_LONG == 8 + x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9; + x = (x ^ (x >> 27)) * 0x94d049bb133111eb; + x = x ^ (x >> 31); +#endif + ZCG(root_hash) = x; + } + } else { + ZCG(root_hash) = 0; + } +#endif + if (!ZCG(function_table).nTableSize) { zend_hash_init(&ZCG(function_table), zend_hash_num_elements(CG(function_table)), NULL, ZEND_FUNCTION_DTOR, 1); zend_accel_copy_internal_functions(); Index: php-7.0.7/ext/opcache/ZendAccelerator.h =================================================================== --- php-7.0.7.orig/ext/opcache/ZendAccelerator.h 2017-03-10 13:17:00.810760946 +0100 +++ php-7.0.7/ext/opcache/ZendAccelerator.h 2017-03-10 13:20:58.326623536 +0100 @@ -204,6 +204,8 @@ typedef struct _zend_accel_directives { zend_bool file_override_enabled; zend_bool inherited_hack; zend_bool enable_cli; + zend_bool validate_permission; + zend_bool validate_root; zend_ulong revalidate_freq; zend_ulong file_update_protection; char *error_log; @@ -256,6 +258,9 @@ typedef struct _zend_accel_globals { time_t last_restart_time; /* used to synchronize SHM and in-process caches */ char system_id[32]; HashTable xlat_table; +#ifndef ZEND_WIN32 + unsigned long root_hash; +#endif /* preallocated shared-memory block to save current script */ void *mem; void *arena_mem; Index: php-7.0.7/ext/opcache/zend_accelerator_hash.c =================================================================== --- php-7.0.7.orig/ext/opcache/zend_accelerator_hash.c 2016-05-25 15:14:16.000000000 +0200 +++ php-7.0.7/ext/opcache/zend_accelerator_hash.c 2017-03-10 13:29:04.454560722 +0100 @@ -86,6 +86,9 @@ zend_accel_hash_entry* zend_accel_hash_u } hash_value = zend_inline_hash_func(key, key_length); +#ifndef ZEND_WIN32 + hash_value ^= ZCG(root_hash); +#endif index = hash_value % accel_hash->max_num_entries; /* try to see if the element already exists in the hash */ @@ -142,6 +145,10 @@ static zend_always_inline void* zend_acc zend_ulong index = hash_value % accel_hash->max_num_entries; zend_accel_hash_entry *entry = accel_hash->hash_table[index]; +#ifndef ZEND_WIN32 + hash_value ^= ZCG(root_hash); +#endif + while (entry) { if (entry->hash_value == hash_value && entry->key_length == key_length @@ -224,6 +231,9 @@ int zend_accel_hash_unlink(zend_accel_ha zend_accel_hash_entry *entry, *last_entry=NULL; hash_value = zend_inline_hash_func(key, key_length); +#ifndef ZEND_WIN32 + hash_value ^= ZCG(root_hash); +#endif index = hash_value % accel_hash->max_num_entries; entry = accel_hash->hash_table[index]; Index: php-7.0.7/ext/opcache/zend_accelerator_module.c =================================================================== --- php-7.0.7.orig/ext/opcache/zend_accelerator_module.c 2016-05-25 15:14:16.000000000 +0200 +++ php-7.0.7/ext/opcache/zend_accelerator_module.c 2017-03-10 13:30:45.672212653 +0100 @@ -272,6 +272,8 @@ ZEND_INI_BEGIN() STD_PHP_INI_BOOLEAN("opcache.enable" , "1", PHP_INI_ALL, OnEnable, enabled , zend_accel_globals, accel_globals) STD_PHP_INI_BOOLEAN("opcache.use_cwd" , "1", PHP_INI_SYSTEM, OnUpdateBool, accel_directives.use_cwd , zend_accel_globals, accel_globals) STD_PHP_INI_BOOLEAN("opcache.validate_timestamps", "1", PHP_INI_ALL , OnUpdateBool, accel_directives.validate_timestamps, zend_accel_globals, accel_globals) + STD_PHP_INI_BOOLEAN("opcache.validate_permission", "0", PHP_INI_SYSTEM, OnUpdateBool, accel_directives.validate_permission, zend_accel_globals, accel_globals) + STD_PHP_INI_BOOLEAN("opcache.validate_root" , "0", PHP_INI_SYSTEM, OnUpdateBool, accel_directives.validate_root , zend_accel_globals, accel_globals) STD_PHP_INI_BOOLEAN("opcache.inherited_hack" , "1", PHP_INI_SYSTEM, OnUpdateBool, accel_directives.inherited_hack , zend_accel_globals, accel_globals) STD_PHP_INI_BOOLEAN("opcache.dups_fix" , "0", PHP_INI_ALL , OnUpdateBool, accel_directives.ignore_dups , zend_accel_globals, accel_globals) STD_PHP_INI_BOOLEAN("opcache.revalidate_path" , "0", PHP_INI_ALL , OnUpdateBool, accel_directives.revalidate_path , zend_accel_globals, accel_globals) @@ -690,6 +692,8 @@ static ZEND_FUNCTION(opcache_get_configu add_assoc_bool(&directives, "opcache.enable_cli", ZCG(accel_directives).enable_cli); add_assoc_bool(&directives, "opcache.use_cwd", ZCG(accel_directives).use_cwd); add_assoc_bool(&directives, "opcache.validate_timestamps", ZCG(accel_directives).validate_timestamps); + add_assoc_bool(&directives, "opcache.validate_permission", ZCG(accel_directives).validate_permission); + add_assoc_bool(&directives, "opcache.validate_root", ZCG(accel_directives).validate_root); add_assoc_bool(&directives, "opcache.inherited_hack", ZCG(accel_directives).inherited_hack); add_assoc_bool(&directives, "opcache.dups_fix", ZCG(accel_directives).ignore_dups); add_assoc_bool(&directives, "opcache.revalidate_path", ZCG(accel_directives).revalidate_path);
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