CVE-2012-5669

La función _bdf_parse_glyphs en FreeType anterior a v2.4.11, permite a atacantes dependientes del contexto provocar una denegación de servicio (Caída) u posiblemente la ejecución de código arbitrario a través de vectores relacionados con las fuentes BDF y un cálculo incorrecto que provoca una lectura fuera de rango.

A null pointer de-reference flaw was found in the way Freetype font rendering engine handled Glyph bitmap distribution format fonts. A remote attacker could provide a specially-crafted BDF font file, which once processed in an application linked against FreeType would lead to that application crash. An out-of heap-based buffer read flaw was found in the way FreeType font rendering engine performed parsing of glyph information and relevant bitmaps for glyph bitmap distribution format (BDF). A remote attacker could provide a specially-crafted BDF font file, which once opened in an application linked against FreeType would lead to that application crash. An out-of heap-based buffer write flaw was found in the way FreeType font rendering engine performed parsing of glyph information and relevant bitmaps for glyph bitmap distribution format (BDF). A remote attacker could provide a specially-crafted font file, which once opened in an application linked against FreeType would lead to that application crash, or, potentially, arbitrary code execution with the privileges of the user running the application.