Ubuntu Security Notice 2758-1 – It was discovered that the PHP phar extension incorrectly handled certain files. A remote attacker could use this issue to cause PHP to crash, resulting in a denial of service. It was discovered that the PHP phar extension incorrectly handled certain filepaths. A remote attacker could use this issue to cause PHP to crash, resulting in a denial of service, or possibly execute arbitrary code. Various other issues were also addressed.