Ubuntu 13.10: USN-2055-1 Critical: PHP DoS Attack Issues

ubuntu

December 12, 2013

Several security issues were fixed in PHP.

Summary

Several security issues were fixed in PHP.

Software Description:

- php5: HTML-embedded scripting language interpreter

Details:

Stefan Esser discovered that PHP incorrectly parsed certificates. An

attacker could use a malformed certificate to cause PHP to crash, resulting

in a denial of service, or possibly execute arbitrary code. (CVE-2013-6420)

It was discovered that PHP incorrectly handled DateInterval objects. An

attacker could use this issue to cause PHP to crash, resulting in a denial

of service. (CVE-2013-6712)

Topics Covered

security advisory security issue critical software update DoS Ubuntu PHP

Update Instructions

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

Ubuntu 13.10:
  libapache2-mod-php5             5.5.3+dfsg-1ubuntu2.1
  php5-cgi                        5.5.3+dfsg-1ubuntu2.1
  php5-cli                        5.5.3+dfsg-1ubuntu2.1

Ubuntu 13.04:
  libapache2-mod-php5             5.4.9-4ubuntu2.4
  php5-cgi                        5.4.9-4ubuntu2.4
  php5-cli                        5.4.9-4ubuntu2.4

Ubuntu 12.10:
  libapache2-mod-php5             5.4.6-1ubuntu1.5
  php5-cgi                        5.4.6-1ubuntu1.5
  php5-cli                        5.4.6-1ubuntu1.5

Ubuntu 12.04 LTS:
  libapache2-mod-php5             5.3.10-1ubuntu3.9
  php5-cgi                        5.3.10-1ubuntu3.9
  php5-cli                        5.3.10-1ubuntu3.9

Ubuntu 10.04 LTS:
  libapache2-mod-php5             5.3.2-1ubuntu4.22
  php5-cgi                        5.3.2-1ubuntu4.22
  php5-cli                        5.3.2-1ubuntu4.22

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