==========================================================================
Ubuntu Security Notice USN-3646-1
May 14, 2018

php5, php7.0, php7.1, php7.2 vulnerabilities
==========================================================================

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

- Ubuntu 18.04 LTS
- Ubuntu 17.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in PHP.

Software Description:
- php7.2: HTML-embedded scripting language interpreter
- php7.1: HTML-embedded scripting language interpreter
- php7.0: HTML-embedded scripting language interpreter
- php5: HTML-embedded scripting language interpreter

Details:

It was discovered that PHP incorrectly handled opcache access controls
when configured to use PHP-FPM. A local user could possibly use this issue
to obtain sensitive information from another user's PHP applications.
(CVE-2018-10545)

It was discovered that the PHP iconv stream filter incorrect handled
certain invalid multibyte sequences. A remote attacker could possibly use
this issue to cause PHP to hang, resulting in a denial of service.
(CVE-2018-10546)

It was discovered that the PHP PHAR error pages incorrectly filtered
certain data. A remote attacker could possibly use this issue to perform
a reflected XSS attack. (CVE-2018-10547)

It was discovered that PHP incorrectly handled LDAP. A malicious remote
LDAP server could possibly use this issue to cause PHP to crash, resulting
in a denial of service. (CVE-2018-10548)

It was discovered that PHP incorrectly handled certain exif tags in JPEG
images. 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, Ubuntu 17.10, and Ubuntu 18.04 LTS. (CVE-2018-10549)

Update instructions:

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

Ubuntu 18.04 LTS:
  libapache2-mod-php7.2           7.2.5-0ubuntu0.18.04.1
  php7.2-cgi                      7.2.5-0ubuntu0.18.04.1
  php7.2-cli                      7.2.5-0ubuntu0.18.04.1
  php7.2-fpm                      7.2.5-0ubuntu0.18.04.1

Ubuntu 17.10:
  libapache2-mod-php7.1           7.1.17-0ubuntu0.17.10.1
  php7.1-cgi                      7.1.17-0ubuntu0.17.10.1
  php7.1-cli                      7.1.17-0ubuntu0.17.10.1
  php7.1-fpm                      7.1.17-0ubuntu0.17.10.1

Ubuntu 16.04 LTS:
  libapache2-mod-php7.0           7.0.30-0ubuntu0.16.04.1
  php7.0-cgi                      7.0.30-0ubuntu0.16.04.1
  php7.0-cli                      7.0.30-0ubuntu0.16.04.1
  php7.0-fpm                      7.0.30-0ubuntu0.16.04.1

Ubuntu 14.04 LTS:
  libapache2-mod-php5             5.5.9+dfsg-1ubuntu4.25
  php5-cgi                        5.5.9+dfsg-1ubuntu4.25
  php5-cli                        5.5.9+dfsg-1ubuntu4.25
  php5-fpm                        5.5.9+dfsg-1ubuntu4.25

In Ubuntu 16.04 LTS, Ubuntu 17.10, and Ubuntu 18.04 LTS, this update uses a
new upstream release, which includes additional bug fixes.

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

References:
  https://usn.ubuntu.com/usn/usn-3646-1
  CVE-2018-10545, CVE-2018-10546, CVE-2018-10547, CVE-2018-10548,
  CVE-2018-10549

Package Information:
  https://launchpad.net/ubuntu/+source/php7.2/7.2.5-0ubuntu0.18.04.1
  https://launchpad.net/ubuntu/+source/php7.1/7.1.17-0ubuntu0.17.10.1
  https://launchpad.net/ubuntu/+source/php7.0/7.0.30-0ubuntu0.16.04.1
  https://launchpad.net/ubuntu/+source/php5/5.5.9+dfsg-1ubuntu4.25