USN-3211-2: PHP regression

Ubuntu Security Notice USN-3211-2

2nd March, 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. ()

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. ()

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. ()

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. ()

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. ()

Update instructions

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

Ubuntu 16.10:

Ubuntu 16.04 LTS:

To update your system, please follow these instructions: