[USN-3646-2] PHP vulnerabilities

[Leonidas S. Barbosa]

==========================================================================
Ubuntu Security Notice USN-3646-2
May 16, 2018

php5 vulnerabilities
==========================================================================

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

- Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in PHP.

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

Details:

USN-3646-1 fixed a vulnerability in PHP. This update provides
the corresponding update for Ubuntu 12.04 ESM.

Original advisory 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 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)

Update instructions:

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

Ubuntu 12.04 ESM:
  libapache2-mod-php5             5.3.10-1ubuntu3.31
  php5-cgi                        5.3.10-1ubuntu3.31
  php5-cli                        5.3.10-1ubuntu3.31
  php5-fpm                        5.3.10-1ubuntu3.31

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

References:
  https://usn.ubuntu.com/usn/usn-3646-2
  https://usn.ubuntu.com/usn/usn-3646-1
  CVE-2018-10545, CVE-2018-10547, CVE-2018-10548
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