USN-1358-1: PHP vulnerabilities
10 February 2012
Multiple vulnerabilities in PHP.
Releases
Packages
- php5 - HTML-embedded scripting language interpreter
Details
It was discovered that PHP computed hash values for form parameters
without restricting the ability to trigger hash collisions predictably.
This could allow a remote attacker to cause a denial of service by
sending many crafted parameters. (CVE-2011-4885)
ATTENTION: this update changes previous PHP behavior by
limiting the number of external input variables to 1000.
This may be increased by adding a "max_input_vars"
directive to the php.ini configuration file. See
http://www.php.net/manual/en/info.configuration.php#ini.max-input-vars
for more information.
Stefan Esser discovered that the fix to address the predictable hash
collision issue, CVE-2011-4885, did not properly handle the situation
where the limit was reached. This could allow a remote attacker to
cause a denial of service or execute arbitrary code via a request
containing a large number of variables. (CVE-2012-0830)
It was discovered that PHP did not always check the return value of
the zend_strndup function. This could allow a remote attacker to
cause a denial of service. (CVE-2011-4153)
It was discovered that PHP did not properly enforce libxslt security
settings. This could allow a remote attacker to create arbitrary
files via a crafted XSLT stylesheet that uses the libxslt output
extension. (CVE-2012-0057)
It was discovered that PHP did not properly enforce that PDORow
objects could not be serialized and not be saved in a session. A
remote attacker could use this to cause a denial of service via an
application crash. (CVE-2012-0788)
It was discovered that PHP allowed the magic_quotes_gpc setting to
be disabled remotely. This could allow a remote attacker to bypass
restrictions that could prevent an SQL injection. (CVE-2012-0831)
USN 1126-1 addressed an issue where the /etc/cron.d/php5 cron job
for PHP allowed local users to delete arbitrary files via a symlink
attack on a directory under /var/lib/php5/. Emese Revfy discovered
that the fix had not been applied to PHP for Ubuntu 10.04 LTS. This
update corrects the issue. We apologize for the error. (CVE-2011-0441)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 8.04
-
php5-cli
-
5.2.4-2ubuntu5.22
-
php5-cgi
-
5.2.4-2ubuntu5.22
-
php5-common
-
5.2.4-2ubuntu5.22
-
php5-xsl
-
5.2.4-2ubuntu5.22
-
php5
-
5.2.4-2ubuntu5.22
-
libapache2-mod-php5
-
5.2.4-2ubuntu5.22
Ubuntu 11.10
-
php5-cli
-
5.3.6-13ubuntu3.5
-
php5-cgi
-
5.3.6-13ubuntu3.5
-
php5-common
-
5.3.6-13ubuntu3.5
-
php5-xsl
-
5.3.6-13ubuntu3.5
-
php5
-
5.3.6-13ubuntu3.5
-
libapache2-mod-php5
-
5.3.6-13ubuntu3.5
Ubuntu 11.04
-
php5-cli
-
5.3.5-1ubuntu7.6
-
php5-cgi
-
5.3.5-1ubuntu7.6
-
php5-common
-
5.3.5-1ubuntu7.6
-
php5-xsl
-
5.3.5-1ubuntu7.6
-
php5
-
5.3.5-1ubuntu7.6
-
libapache2-mod-php5
-
5.3.5-1ubuntu7.6
Ubuntu 10.10
-
php5-cli
-
5.3.3-1ubuntu9.9
-
php5-cgi
-
5.3.3-1ubuntu9.9
-
php5-common
-
5.3.3-1ubuntu9.9
-
php5-xsl
-
5.3.3-1ubuntu9.9
-
php5
-
5.3.3-1ubuntu9.9
-
libapache2-mod-php5
-
5.3.3-1ubuntu9.9
Ubuntu 10.04
-
php5-cli
-
5.3.2-1ubuntu4.13
-
php5-cgi
-
5.3.2-1ubuntu4.13
-
php5-common
-
5.3.2-1ubuntu4.13
-
php5-xsl
-
5.3.2-1ubuntu4.13
-
php5
-
5.3.2-1ubuntu4.13
-
libapache2-mod-php5
-
5.3.2-1ubuntu4.13
In general, a standard system update will make all the necessary changes.
Related notices
- USN-1126-1: php5-intl, php5-curl, php5-gd, php5-common, php5-dev, php-pear, php5-cgi, php5, php5-cli, libapache2-mod-php5