Security update for php53 (important)

This update for php53 fixes several issues.

These security issues were fixed:

• CVE-2016-10712: In PHP all of the return values of stream_get_meta_data
  could be controlled if the input can be controlled (e.g., during file
  uploads). (bsc#1080234)
• CVE-2018-5712: Prevent reflected XSS on the PHAR 404 error page via the
  URI of a request for a .phar file that allowed for information
  disclosure (bsc#1076220)
• CVE-2018-5711: Prevent integer signedness error that could have lead to
  an infinite loop via a crafted GIF file allowing for DoS (bsc#1076391)
• CVE-2016-5773: php_zip.c in the zip extension in PHP improperly
  interacted with the unserialize implementation and garbage collection,
  which allowed remote attackers to execute arbitrary code or cause a
  denial of service (use-after-free and application crash) via crafted
  serialized data containing a ZipArchive object. (bsc#986247)
• CVE-2016-5771: spl_array.c in the SPL extension in PHP improperly
  interacted with the unserialize implementation and garbage collection,
  which allowed remote attackers to execute arbitrary code or cause a
  denial of service (use-after-free and application crash) via crafted
  serialized data. (bsc#986391)
• CVE-2018-7584: Fixed stack-based buffer under-read while parsing an
  HTTPresponse in the php_stream_url_wrap_http_ex. (bsc#1083639)