[USN-3211-2] PHP regression

[Marc Deslauriers]

==========================================================================
Ubuntu Security Notice USN-3211-2
March 02, 2017

php7.0 regression
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.10
- Ubuntu 16.04 LTS

Summary:

USN-3211-1 introduced a regression in PHP.

Software Description:
- php7.0: HTML-embedded scripting language interpreter

Details:

USN-3211-1 fixed vulnerabilities in PHP by updating to the new 7.0.15
upstream release. PHP 7.0.15 introduced a regression when using MySQL with
large blobs. This update fixes the problem with a backported fix.

Original advisory details:

 It was discovered that PHP incorrectly handled certain invalid objects when
 unserializing data. A remote attacker could use this issue to cause PHP to
 crash, resulting in a denial of service, or possibly execute arbitrary
 code. (CVE-2016-7479)
  It was discovered that PHP incorrectly handled certain invalid objects when
 unserializing data. A remote attacker could use this issue to cause PHP to
 crash, resulting in a denial of service, or possibly execute arbitrary
 code. (CVE-2016-9137)
  It was discovered that PHP incorrectly handled unserializing certain
 wddxPacket XML documents. A remote attacker could use this issue to cause
 PHP to crash, resulting in a denial of service, or possibly execute
 arbitrary code. (CVE-2016-9935)
  It was discovered that PHP incorrectly handled certain invalid objects when
 unserializing data. A remote attacker could use this issue to cause PHP to
 crash, resulting in a denial of service, or possibly execute arbitrary
 code. (CVE-2016-9936)
  It was discovered that PHP incorrectly handled certain EXIF data. A remote
 attacker could use this issue to cause PHP to crash, resulting in a denial
 of service. (CVE-2016-10158)
  It was discovered that PHP incorrectly handled certain PHAR archives. A
 remote attacker could use this issue to cause PHP to crash or consume
 resources, resulting in a denial of service. (CVE-2016-10159)
  It was discovered that PHP incorrectly handled certain PHAR archives. A
 remote attacker could use this issue to cause PHP to crash, resulting in a
 denial of service, or possibly execute arbitrary code. (CVE-2016-10160)
  It was discovered that PHP incorrectly handled certain invalid objects when
 unserializing data. A remote attacker could use this issue to cause PHP to
 crash, resulting in a denial of service. (CVE-2016-10161)
  It was discovered that PHP incorrectly handled unserializing certain
 wddxPacket XML documents. A remote attacker could use this issue to cause
 PHP to crash, resulting in a denial of service. (CVE-2016-10162)
  It was discovered that PHP incorrectly handled certain invalid objects when
 unserializing data. A remote attacker could use this issue to cause PHP to
 crash, resulting in a denial of service, or possibly execute arbitrary
 code. (CVE-2017-5340)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 16.10:
  libapache2-mod-php7.0           7.0.15-0ubuntu0.16.10.4
  php7.0-cgi                      7.0.15-0ubuntu0.16.10.4
  php7.0-cli                      7.0.15-0ubuntu0.16.10.4
  php7.0-fpm                      7.0.15-0ubuntu0.16.10.4

Ubuntu 16.04 LTS:
  libapache2-mod-php7.0           7.0.15-0ubuntu0.16.04.4
  php7.0-cgi                      7.0.15-0ubuntu0.16.04.4
  php7.0-cli                      7.0.15-0ubuntu0.16.04.4
  php7.0-fpm                      7.0.15-0ubuntu0.16.04.4

In general, a standard system update will make all the necessary changes.

References:
  http://www.ubuntu.com/usn/usn-3211-2
  http://www.ubuntu.com/usn/usn-3211-1
  https://launchpad.net/bugs/1668017

Package Information:
  https://launchpad.net/ubuntu/+source/php7.0/7.0.15-0ubuntu0.16.10.4
  https://launchpad.net/ubuntu/+source/php7.0/7.0.15-0ubuntu0.16.04.4


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