Several security issues were fixed in PHP.
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. (CVE-2015-5589)
30 September 2015
A security issue affects these releases of Ubuntu and its derivatives:
Several security issues were fixed in PHP.
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. (CVE-2015-5589)
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. (CVE-2015-5590)
Taoguang Chen 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-2015-6831, CVE-2015-6834, CVE-2015-6835
Sean Heelan 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-2015-6832)
It was discovered that the PHP phar extension incorrectly handled certain archives. A remote attacker could use this issue to cause files to be placed outside of the destination directory. (CVE-2015-6833)
Andrea Palazzo discovered that the PHP Soap client incorrectly validated data types. A remote attacker could use this issue to cause PHP to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2015-6836)
It was discovered that the PHP XSLTProcessor class incorrectly handled certain data. A remote attacker could use this issue to cause PHP to crash, resulting in a denial of service. (CVE-2015-6837)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.