The Common UNIX Printing System (CUPS) provides a portable printing layerfor UNIX operating systems. The CUPS "pdftops" filter converts PortableDocument Format (PDF) files to PostScript.Two integer overflow flaws were found in the CUPS "pdftops" filter. Anattacker could create a malicious PDF file that would cause "pdftops" tocrash or, potentially, execute arbitrary code as the "lp" user if the filewas printed. (CVE-2009-3608, CVE-2009-3609)Red Hat would like to thank Chris Rohlf for reporting the CVE-2009-3608issue.Users of cups are advised to upgrade to these updated packages, whichcontain a backported patch to correct these issues. After installing theupdate, the cupsd daemon will be restarted automatically.