php5 - security update

Multiple vulnerabilities have been discovered in the PHP language:

• CVE-2015-4598
  thoger at redhat dot com discovered that paths containing a NUL
  character were improperly handled, thus allowing an attacker to
  manipulate unexpected files on the server.
• CVE-2015-4643
  Max Spelsberg discovered an integer overflow flaw leading to a
  heap-based buffer overflow in PHP’s FTP extension, when parsing
  listings in FTP server responses. This could lead to a a crash or
  execution of arbitrary code.
• CVE-2015-4644
  A denial of service through a crash could be caused by a segfault
  in the php_pgsql_meta_data function.
• CVE-2015-5589
  kwrnel at hotmail dot com discovered that PHP could crash when
  processing an invalid phar file, thus leading to a denial of
  service.
• CVE-2015-5590
  jared at enhancesoft dot com discovered a buffer overflow in the
  phar_fix_filepath function, that could causes a crash or execution
  of arbitrary code.
• Additionally, several other vulnerabilites were fixed:

sean dot heelan at gmail dot com discovered a problem in the
unserialization of some items, that could lead to arbitrary code
execution.

stewie at mail dot ru discovered that the phar extension improperly
handled zip archives with relative paths, which would allow an
attacker to overwrite files outside of the destination directory.

taoguangchen at icloud dot com discovered several use-after-free
vulnerabilities that could lead to arbitrary code execution.

For the oldstable distribution (wheezy), these problems have been fixed
in version 5.4.44-0+deb7u1.

For the stable distribution (jessie), these problems have been fixed in
version 5.6.12+dfsg-0+deb8u1.

For the unstable distribution (sid), these problems have been fixed in
version 5.6.12+dfsg-1.

We recommend that you upgrade your php5 packages.