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USN-1937-1: PHP vulnerability

5 September 2013

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



  • php5 - HTML-embedded scripting language interpreter


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 machine-in-the-middle attack to view sensitive information or
alter encrypted communications.

Update instructions

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

Ubuntu 13.04
Ubuntu 12.10
Ubuntu 12.04
Ubuntu 10.04

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