==========================================================================
Ubuntu Security Notice USN-3566-2
May 22, 2019

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

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

- Ubuntu 14.04 ESM
- Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in PHP.

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

Details:

USN-3566-1 fixed several vulnerabilities in PHP. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

It was discovered that PHP incorrectly handled certain files. An
attacker could possibly use this issue to access sensitive information.
(CVE-2018-20783)

It was discovered that PHP incorrectly handled certain files. An
attacker could possibly use this issue to access sensitive information
or possibly cause a crash, resulting in a denial of service. 
(CVE-2019-11036)

Original advisory details:

 It was discovered that PHP incorrectly handled memory when
 unserializing certain data. 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 affected Ubuntu 12.04 ESM.
 (CVE-2017-12933)

 It was discovered that PHP incorrectly handled locale length. A remote
 attacker could possibly use this issue to cause PHP to crash,
 resulting in a denial of service. This issue only affected Ubuntu
 12.04 ESM. (CVE-2017-11362)

 It was discovered that PHP incorrectly handled certain stream
 metadata. A remote attacker could possibly use this issue to set
 arbitrary metadata. This issue only affected Ubuntu 12.04 ESM.
 (CVE-2016-10712)

Update instructions:

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

Ubuntu 14.04 ESM:
  libapache2-mod-php5             5.5.9+dfsg-1ubuntu4.29+esm2
  php5-cgi                        5.5.9+dfsg-1ubuntu4.29+esm2
  php5-cli                        5.5.9+dfsg-1ubuntu4.29+esm2
  php5-fpm                        5.5.9+dfsg-1ubuntu4.29+esm2

Ubuntu 12.04 ESM:
  libapache2-mod-php5             5.3.10-1ubuntu3.36
  php5-cgi                        5.3.10-1ubuntu3.36
  php5-cli                        5.3.10-1ubuntu3.36
  php5-fpm                        5.3.10-1ubuntu3.36

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

References:
  https://usn.ubuntu.com/usn/usn-3566-2
  https://usn.ubuntu.com/usn/usn-3566-1
  CVE-2016-10712, CVE-2017-11362, CVE-2017-12933, CVE-2018-20783,
  CVE-2019-11036