USN-3646-1: PHP vulnerabilities

14 May 2018

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

Packages

  • php5 - HTML-embedded scripting language interpreter
  • php7.0 - HTML-embedded scripting language interpreter
  • php7.1 - HTML-embedded scripting language interpreter
  • php7.2 - 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
Ubuntu 17.10
Ubuntu 16.04
Ubuntu 14.04

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.