In GammaImage() of /MagickCore/enhance.c, depending on the gamma value, its possible to trigger a divide-by-zero condition when a crafted input file is processed by ImageMagick. This could lead to an impact to application availability. The patch uses the PerceptibleReciprocal() to prevent the divide-by-zero from occurring. This flaw affects ImageMagick versions prior to ImageMagick 7.0.8-68.
The product divides a value by zero.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Imagemagick | Imagemagick | * | 6.9.10-68 (excluding) |
| Imagemagick | Imagemagick | 7.0.0-0 (including) | 7.0.8-68 (excluding) |
| Imagemagick | Ubuntu | bionic | * |
| Imagemagick | Ubuntu | esm-infra/xenial | * |
| Imagemagick | Ubuntu | focal | * |
| Imagemagick | Ubuntu | groovy | * |
| Imagemagick | Ubuntu | trusty | * |
| Imagemagick | Ubuntu | trusty/esm | * |
| Imagemagick | Ubuntu | upstream | * |
| Imagemagick | Ubuntu | xenial | * |