CVE-2013-7020

La función read_header function en libavcodec/ffv1dec.c en FFmpeg anterior a v2.1 no aplica correctamente ciertas restricciones en el número de bits y en el espacio de colores, lo que permite a atacantes remotos provocar una denegación de servicio (acceso a array fuera de rango) o posiblemente tener otro impacto no especificado a través de información FFV1 manipulada.

The decode_init function in libavcodec/huffyuv.c in FFmpeg before 1.1 allows remote attackers to have an unspecified impact via a crafted width in huffyuv data with the predictor set to median and the colorspace set to YUV422P, which triggers an out-of-bounds array access. The parse_picture_segment function in libavcodec/pgssubdec.c in FFmpeg before 1.1 allows remote attackers to have an unspecified impact via crafted RLE data, which triggers an out-of-bounds array access. The ff_er_frame_end function in libavcodec/error_resilience.c in FFmpeg before 1.0.4 and 1.1.x before 1.1.1 does not properly verify that a frame is fully initialized, which allows remote attackers to trigger a NULL pointer dereference via crafted picture data. The mm_decode_inter function in mmvideo.c in libavcodec in FFmpeg before 1.2.1 does not validate the relationship between a horizontal coordinate and a width value, which allows remote attackers to cause a denial of service via crafted American Laser Games MM Video data. The cdg_decode_frame function in cdgraphics.c in libavcodec in FFmpeg before 1.2.1 does not validate the presence of non-header data in a buffer, which allows remote attackers to cause a denial of service via crafted CD Graphics Video data. The read_header function in libavcodec/ffv1dec.c in FFmpeg before 2.1 does not properly enforce certain bit-count and colorspace constraints, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via crafted FFV1 data. The updated packages have been upgraded to the 0.10.15 version which is not vulnerable to these issues.