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

php7.0 regression
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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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