Use-after-free vulnerability in the process_nested_data function in ext/standard/var_unserializer.re in PHP before 5.4.36, 5.5.x before 5.5.20, and 5.6.x before 5.6.4 allows remote attackers to execute arbitrary code via a crafted unserialize call that leverages improper handling of duplicate keys within the serialized properties of an object, a different vulnerability than CVE-2004-1019.

Affected: Ubuntu:14.04:LTS: php5

Stefan Esser discovered that PHP incorrectly handled unserializing 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-2014-8142, CVE-2015-0231)

Brian Carpenter discovered that the PHP CGI component incorrectly handled invalid files. A local attacker could use this issue to obtain sensitive information, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS and Ubuntu 14.10. (CVE-2014-9427)

It was discovered that PHP incorrectly handled certain pascal strings in the fileinfo extension. A remote attacker could possibly use this issue to cause PHP to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 14.10. (CVE-2014-9652)

Alex Eubanks discovered that PHP incorrectly handled EXIF data in JPEG images. A remote attacker could use this issue to cause PHP to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS and Ubuntu 14.10. (CVE-2015-0232)

It was discovered that the PHP opcache component incorrectly handled memory. A remote attacker could possibly use this issue to cause PHP to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS and Ubuntu 14.10. (CVE-2015-1351)

It was discovered that the PHP PostgreSQL database extension incorrectly handled certain pointers. A remote attacker could p…