Updated cups package fixes security vulnerabilities

It was discovered that CUPS incorrectly handled reference counting when handling localized strings. A remote attacker could use this issue to escalate permissions, upload a replacement CUPS configuration file, and execute arbitrary code (CVE-2015-1158). It was discovered that the CUPS templating engine contained a cross-site scripting issue. A remote attacker could use this issue to bypass default configuration settings (CVE-2015-1159). It was discovered that the CUPS server can get stuck in an infinite loop when a user queues a malformed gzip file. When this happens the CUPS server will be unable to service any further requests (STR#4602).