Description
The SplObjectStorage unserialize implementation in ext/spl/spl_observer.c in PHP before 7.0.12 does not verify that a key is an object, which allows remote attackers to execute arbitrary code or cause a denial of service (uninitialized memory access) via crafted serialized data.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a PHP before 7.0.12
PHP before 7.0.12affected
References
- http://blog.checkpoint.com/wp-content/uploads/2016/12/PHP_Technical_Report.pdf ↗
- https://www.youtube.com/watch?v=LDcaPstAuPk ↗
- https://bugs.php.net/bug.php?id=73257 ↗
- http://php.net/ChangeLog-7.php ↗
- http://www.securityfocus.com/bid/95152 ↗
- https://github.com/php/php-src/commit/61cdd1255d5b9c8453be71aacbbf682796ac77d4 ↗
- https://security.netapp.com/advisory/ntap-20180112-0001/ ↗
- http://blog.checkpoint.com/2016/12/27/check-point-discovers-three-zero-day-vulnerabilities-web-programming-language-php-7 ↗