The Common UNIX Printing System (CUPS) provides a portable printing layer for UNIX(R) operating systems.
Alin Rad Pop discovered several flaws in the handling of PDF files. An attacker could create a malicious PDF file that would cause CUPS to crash or potentially execute arbitrary code when printed. (CVE-2007-4352, CVE-2007-5392, CVE-2007-5393)
All CUPS users are advised to upgrade to these updated packages, which contain backported patches to resolve these issues.