Multiple heap-based buffer overflows in the PDF distiller in the Attachment Service in Research in Motion (RIM) BlackBerry Enterprise Server (BES) 4.1.3 through 4.1.6, BlackBerry Professional Software 4.1.4, and BlackBerry Unite! before 1.0.3 bundle 28 allow user-assisted remote attackers to execute arbitrary code via (1) a crafted stream in a .pdf file, related to "symWidths"; or (2) a crafted data stream in a .pdf file, related to "bitmaps."