another ImageMagick vulnerability

[sasiko]

http://permalink.gmane.org/gmane.comp.security.oss.general/19669

All existing releases of GraphicsMagick and ImageMagick support a file open syntax where if the first character of the file specification is a '|', then the remainder of the filename is passed to the shell for execution using the POSIX popen(3C) function. File opening is handled by an OpenBlob() function in the source file blob.c. Unlike the vulnerability described by CVE-2016-3714, this functionality is supported by the core file opening function rather than a delegates subsystem usually used to execute external programs.

ImageMagick-7 : http://git.imagemagick.org/repos/Ima...4f0921abc61458
ImageMagick-6 : http://git.imagemagick.org/repos/Ima...fc463b50c2c6b7