Debian Long Term Support / LTS Security Information / 2017 / Security Information -- DLA-875-1 php5

Debian Security Advisory

DLA-875-1 php5 -- LTS security update

Date Reported:

27 Mar 2017

Affected Packages:

php5

Vulnerable:

Yes

Security database references:

In Mitre's CVE dictionary: CVE-2016-7478, CVE-2016-7479, CVE-2017-7272.

More information:

Several issues have been discovered in PHP (recursive acronym for PHP: Hypertext Preprocessor), a widely-used open source general-purpose scripting language that is especially suited for web development and can be embedded into HTML.

• CVE-2016-7478

  Zend/zend_exceptions.c in PHP allows remote attackers to cause a denial of service (infinite loop) via a crafted Exception object in serialized data, a related issue to CVE-2015-8876.

• CVE-2016-7479

  During the unserialization process, resizing the properties hash table of a serialized object may lead to use-after-free. A remote attacker may exploit this bug to gain the ability of arbitrary code execution. Even though the property table issue only affects PHP 7 this change also prevents a wide range of other __wakeup() based attacks.

• CVE-2017-7272

  The fsockopen() function will use the port number which is defined in hostname instead of the port number passed to the second parameter of the function. This misbehavior may introduce another attack vector for an already known application vulnerability (e.g. Server Side Request Forgery).

For Debian 7 Wheezy, these problems have been fixed in version 5.4.45-0+deb7u8.

We recommend that you upgrade your php5 packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS