USN-1569-1: PHP vulnerabilities

Ubuntu Security Notice USN-1569-1

17th September, 2012

php5 vulnerabilities

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

  • Ubuntu 12.04 LTS
  • Ubuntu 11.10
  • Ubuntu 11.04
  • Ubuntu 10.04 LTS
  • Ubuntu 8.04 LTS


Several security issues were fixed in PHP.

Software description

  • php5 - HTML-embedded scripting language interpreter


It was discovered that PHP incorrectly handled certain character sequences
when applying HTTP response-splitting protection. A remote attacker could
create a specially-crafted URL and inject arbitrary headers.
(CVE-2011-1398, CVE-2012-4388)

It was discovered that PHP incorrectly handled directories with a large
number of files. This could allow a remote attacker to execute arbitrary
code with the privileges of the web server, or to perform a denial of
service. (CVE-2012-2688)

It was discovered that PHP incorrectly parsed certain PDO prepared
statements. A remote attacker could use this flaw to cause PHP to crash,
leading to a denial of service. (CVE-2012-3450)

Update instructions

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

Ubuntu 12.04 LTS:
php5 5.3.10-1ubuntu3.4
Ubuntu 11.10:
php5 5.3.6-13ubuntu3.9
Ubuntu 11.04:
php5 5.3.5-1ubuntu7.11
Ubuntu 10.04 LTS:
php5 5.3.2-1ubuntu4.18
Ubuntu 8.04 LTS:
php5 5.2.4-2ubuntu5.26

To update your system, please follow these instructions:

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


CVE-2011-1398, CVE-2012-2688, CVE-2012-3450, CVE-2012-4388