The php_handler function in sapi/apache2handler/sapi_apache2.c in PHP before 5.4.40, 5.5.x before 5.5.24, and 5.6.x before 5.6.8, when the Apache HTTP Server 2.4.x is used, allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via pipelined HTTP requests that result in a "deconfigured interpreter."

Affected: Ubuntu:14.04:LTS: php5

It was discovered that PHP incorrectly handled cleanup when used with Apache 2.4. A remote attacker could use this issue to cause PHP to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2015-3330)

It was discovered that PHP incorrectly handled opening tar, zip or phar archives through the PHAR extension. A remote attacker could use this issue to cause PHP to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2015-3329)

It was discovered that PHP incorrectly handled regular expressions. A remote attacker could use this issue to cause PHP to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2015-2305)

Paulos Yibelo discovered that PHP incorrectly handled moving files when a pathname contained a null character. A remote attacker could use this issue to possibly bypass filename restrictions. This issue only applied to Ubuntu 14.04 LTS and Ubuntu 14.10. (CVE-2015-2348)

It was discovered that PHP incorrectly handled unserializing PHAR files. A remote attacker could use this issue to cause PHP to possibly expose sensitive information. (CVE-2015-2783)

Taoguang Chen discovered that PHP incorrectly handled unserializing certain objects. A remote attacker could use this issue to cause PHP to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2015-2787)