Ubuntu: 1937-1 Critical PHP Man-In-The-Middle Exposure Advisory

ubuntu

September 5, 2013

Fraudulent security certificates could allow sensitive information to be exposed when accessing the Internet.

Summary

Fraudulent security certificates could allow sensitive information to

be exposed when accessing the Internet.

Software Description:

- php5: HTML-embedded scripting language interpreter

Details:

It was discovered that PHP did not properly handle certificates with NULL

characters in the Subject Alternative Name field. An attacker could exploit

this to perform a man in the middle attack to view sensitive information or

alter encrypted communications.

Topics Covered

security advisory critical php ubuntu man-in-the-middle certificate issue

Update Instructions

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

Ubuntu 13.04:
  libapache2-mod-php5             5.4.9-4ubuntu2.3
  php5-cgi                        5.4.9-4ubuntu2.3
  php5-cli                        5.4.9-4ubuntu2.3

Ubuntu 12.10:
  libapache2-mod-php5             5.4.6-1ubuntu1.4
  php5-cgi                        5.4.6-1ubuntu1.4
  php5-cli                        5.4.6-1ubuntu1.4

Ubuntu 12.04 LTS:
  libapache2-mod-php5             5.3.10-1ubuntu3.8
  php5-cgi                        5.3.10-1ubuntu3.8
  php5-cli                        5.3.10-1ubuntu3.8

Ubuntu 10.04 LTS:
  libapache2-mod-php5             5.3.2-1ubuntu4.21
  libapache2-mod-php5filter       5.3.2-1ubuntu4.21
  php5-cgi                        5.3.2-1ubuntu4.21
  php5-cli                        5.3.2-1ubuntu4.21

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