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Ubuntu Security Notice USN-3600-2
May 15, 2018

php5 vulnerabilities
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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-3600-1 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 the PHAR 404 error
 page. A remote attacker could possibly use this issue to conduct
 cross-site scripting (XSS) attacks. (CVE-2018-5712)

 It was discovered that PHP incorrectly handled parsing certain HTTP
 responses. A remote attacker could use this issue to cause PHP to
 crash, resulting in a denial of service, or possibly execute arbitrary
 code. (CVE-2018-7584)

Update instructions:

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

Ubuntu 12.04 ESM:
  libapache2-mod-php5             5.3.10-1ubuntu3.30
  php5                            5.3.10-1ubuntu3.30
  php5-cgi                        5.3.10-1ubuntu3.30
  php5-cli                        5.3.10-1ubuntu3.30
  php5-fpm                        5.3.10-1ubuntu3.30

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

References:
  https://usn.ubuntu.com/usn/usn-3600-2
  https://usn.ubuntu.com/usn/usn-3600-1
  CVE-2018-5712, CVE-2018-7584