[USN-3902-1] PHP vulnerabilities

[Marc Deslauriers]

==========================================================================
Ubuntu Security Notice USN-3902-1
March 06, 2019

php5, php7.0 vulnerabilities
==========================================================================

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

- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in PHP.

Software Description:
- php7.0: HTML-embedded scripting language interpreter
- php5: HTML-embedded scripting language interpreter

Details:

It was discovered that the PHP XML-RPC module incorrectly handled decoding
XML data. A remote attacker could possibly use this issue to cause PHP to
crash, resulting in a denial of service. (CVE-2019-9020, CVE-2019-9024)

It was discovered that the PHP PHAR module incorrectly handled certain
filenames. A remote attacker could possibly use this issue to cause PHP to
crash, resulting in a denial of service. (CVE-2019-9021)

It was discovered that PHP incorrectly parsed certain DNS responses. A
remote attacker could possibly use this issue to cause PHP to crash,
resulting in a denial of service. This issue only affected Ubuntu 16.04
LTS. (CVE-2019-9022)

It was discovered that PHP incorrectly handled mbstring regular
expressions. A remote attacker could possibly use this issue to cause PHP
to crash, resulting in a denial of service. (CVE-2019-9023)

Update instructions:

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

Ubuntu 16.04 LTS:
  libapache2-mod-php7.0           7.0.33-0ubuntu0.16.04.2
  php7.0-cgi                      7.0.33-0ubuntu0.16.04.2
  php7.0-cli                      7.0.33-0ubuntu0.16.04.2
  php7.0-fpm                      7.0.33-0ubuntu0.16.04.2
  php7.0-mbstring                 7.0.33-0ubuntu0.16.04.2
  php7.0-xmlrpc                   7.0.33-0ubuntu0.16.04.2

Ubuntu 14.04 LTS:
  libapache2-mod-php5             5.5.9+dfsg-1ubuntu4.27
  php5-cgi                        5.5.9+dfsg-1ubuntu4.27
  php5-cli                        5.5.9+dfsg-1ubuntu4.27
  php5-fpm                        5.5.9+dfsg-1ubuntu4.27
  php5-xmlrpc                     5.5.9+dfsg-1ubuntu4.27

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

References:
  https://usn.ubuntu.com/usn/usn-3902-1
  CVE-2019-9020, CVE-2019-9021, CVE-2019-9022, CVE-2019-9023,
  CVE-2019-9024

Package Information:
  https://launchpad.net/ubuntu/+source/php7.0/7.0.33-0ubuntu0.16.04.2
  https://launchpad.net/ubuntu/+source/php5/5.5.9+dfsg-1ubuntu4.27

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