=========================================================================Ubuntu Security Notice USN-2952-2
April 27, 2016

php5 regression
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 15.10

Summary:

USN-2952-1 caused a regression in PHP.

Software Description:
- php5: HTML-embedded scripting language interpreter

Details:

USN-2952-1 fixed vulnerabilities in PHP. One of the backported patches
caused a regression in the PHP Soap client. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

 It was discovered that the PHP Zip extension incorrectly handled
 directories when processing certain zip files. A remote attacker could
 possibly use this issue to create arbitrary directories. (CVE-2014-9767)
  It was 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-2015-8835, CVE-2016-3185)
  It was discovered that the PHP MySQL native driver incorrectly handled TLS
 connections to MySQL databases. A man in the middle attacker could possibly
 use this issue to downgrade and snoop on TLS connections. This
 vulnerability is known as BACKRONYM. (CVE-2015-8838)
  It was discovered that PHP incorrectly handled the imagerotate function. A
 remote attacker could use this issue to cause PHP to crash, resulting in a
 denial of service, or possibly obtain sensitive information. This issue
 only applied to Ubuntu 14.04 LTS and Ubuntu 15.10. (CVE-2016-1903)
  Hans Jerry Illikainen discovered that the PHP phar extension incorrectly
 handled certain tar 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-2016-2554)
  It was discovered that the PHP WDDX extension incorrectly handled certain
 malformed XML data. A remote attacker could possibly use this issue to
 cause PHP to crash, resulting in a denial of service, or possibly execute
 arbitrary code. (CVE-2016-3141)
  It was discovered that the PHP phar extension incorrectly handled certain
 zip files. A remote attacker could use this issue to cause PHP to crash,
 resulting in a denial of service, or possibly obtain sensitive information.
 (CVE-2016-3142)
  It was discovered that the PHP libxml_disable_entity_loader() setting was
 shared between threads. When running under PHP-FPM, this could result in
 XML external entity injection and entity expansion issues. This issue only
 applied to Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (No CVE number)
  It was discovered that the PHP openssl_random_pseudo_bytes() function did
 not return cryptographically strong pseudo-random bytes. (No CVE number)
  It was discovered that the PHP Fileinfo component incorrectly handled
 certain magic files. An attacker could use this issue to cause PHP to
 crash, resulting in a denial of service, or possibly execute arbitrary
 code. (CVE number pending)
  It was discovered that the PHP php_snmp_error() function incorrectly
 handled string formatting. A remote attacker could use this issue to cause
 PHP to crash, resulting in a denial of service, or possibly execute
 arbitrary code. This issue only applied to Ubuntu 14.04 LTS and Ubuntu
 15.10. (CVE number pending)
  It was discovered that the PHP rawurlencode() function incorrectly handled
 large strings. A remote attacker could use this issue to cause PHP to
 crash, resulting in a denial of service. (CVE number pending)
  It was discovered that the PHP phar extension incorrectly handled certain
 filenames in 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 number pending)
  It was discovered that the PHP mb_strcut() function incorrectly handled
 string formatting. A remote attacker could use this issue to cause PHP to
 crash, resulting in a denial of service, or possibly execute arbitrary
 code. (CVE number pending)

Update instructions:

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

Ubuntu 15.10:
  libapache2-mod-php5             5.6.11+dfsg-1ubuntu3.3
  php5-cgi                        5.6.11+dfsg-1ubuntu3.3
  php5-cli                        5.6.11+dfsg-1ubuntu3.3
  php5-fpm                        5.6.11+dfsg-1ubuntu3.3
  php5-gd                         5.6.11+dfsg-1ubuntu3.3
  php5-mysqlnd                    5.6.11+dfsg-1ubuntu3.3
  php5-snmp                       5.6.11+dfsg-1ubuntu3.3

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

References:
  https://ubuntu.com/security/notices/USN-2952-2
  https://ubuntu.com/security/notices/USN-2952-1
  https://launchpad.net/bugs/1575298

Package Information:
  https://launchpad.net/ubuntu/+source/php5/5.6.11+dfsg-1ubuntu3.3