ImageMagick up to 7.0.7-11 coders/png.c ReadOneMNGImage memory corruption

A vulnerability, which was classified as critical, has been found in ImageMagick up to 7.0.7-11 (Image Processing Software). Affected by this issue is the function ReadOneMNGImage of the file coders/png.c. Upgrading to version 7.0.7-12 eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.