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| author | Stanislav Malyshev <stas@php.net> | 2014-09-28 14:19:31 -0700 |
|---|---|---|
| committer | Julien Pauli <jpauli@php.net> | 2014-10-15 11:43:18 +0200 |
| commit | 4af06aca40ac4c592a71a0b1206a50fad994de21 (patch) | |
| tree | 2a4323d5c4e4345684078a081ff0c5936088da98 | |
| parent | 886b8efbee605b6e5caa2e8d52475077757175fc (diff) | |
| download | php-git-4af06aca40ac4c592a71a0b1206a50fad994de21.tar.gz | |
Fixed bug #68044: Integer overflow in unserialize() (32-bits only)
| -rw-r--r-- | ext/standard/tests/serialize/bug68044.phpt | 12 | ||||
| -rw-r--r-- | ext/standard/var_unserializer.c | 4 | ||||
| -rw-r--r-- | ext/standard/var_unserializer.re | 2 |
3 files changed, 15 insertions, 3 deletions
diff --git a/ext/standard/tests/serialize/bug68044.phpt b/ext/standard/tests/serialize/bug68044.phpt new file mode 100644 index 0000000000..031e44e149 --- /dev/null +++ b/ext/standard/tests/serialize/bug68044.phpt @@ -0,0 +1,12 @@ +--TEST-- +Bug #68044 Integer overflow in unserialize() (32-bits only) +--FILE-- +<?php + echo unserialize('C:3:"XYZ":18446744075857035259:{}'); +?> +===DONE== +--EXPECTF-- +Warning: Insufficient data for unserializing - %d required, 1 present in %s/bug68044.php on line 2 + +Notice: unserialize(): Error at offset 32 of 33 bytes in %s/bug68044.php on line 2 +===DONE== diff --git a/ext/standard/var_unserializer.c b/ext/standard/var_unserializer.c index 657051f6f7..8129da3d82 100644 --- a/ext/standard/var_unserializer.c +++ b/ext/standard/var_unserializer.c @@ -1,4 +1,4 @@ -/* Generated by re2c 0.13.5 on Sat Jun 21 21:27:56 2014 */ +/* Generated by re2c 0.13.5 */ #line 1 "ext/standard/var_unserializer.re" /* +----------------------------------------------------------------------+ @@ -372,7 +372,7 @@ static inline int object_custom(UNSERIALIZE_PARAMETER, zend_class_entry *ce) (*p) += 2; - if (datalen < 0 || (*p) + datalen >= max) { + if (datalen < 0 || (max - (*p)) <= datalen) { zend_error(E_WARNING, "Insufficient data for unserializing - %ld required, %ld present", datalen, (long)(max - (*p))); return 0; } diff --git a/ext/standard/var_unserializer.re b/ext/standard/var_unserializer.re index 130750805f..6de158392e 100644 --- a/ext/standard/var_unserializer.re +++ b/ext/standard/var_unserializer.re @@ -376,7 +376,7 @@ static inline int object_custom(UNSERIALIZE_PARAMETER, zend_class_entry *ce) (*p) += 2; - if (datalen < 0 || (*p) + datalen >= max) { + if (datalen < 0 || (max - (*p)) <= datalen) { zend_error(E_WARNING, "Insufficient data for unserializing - %ld required, %ld present", datalen, (long)(max - (*p))); return 0; } |