imagemagick: In ParseMetaGeometry() of MagickCore/geometry.c, image height and width calculations can lead to divide-by-zero condi...
CVE-2020-27756 is fixed in 21 products on 1 platform, first by imagemagick 8:6.9.10.23+dfsg-2.1ubuntu11.4, released May 14, 2021. It is not reported as exploited. Patch Radar priority: Routine.
In ParseMetaGeometry() of MagickCore/geometry.c, image height and width calculations can lead to divide-by-zero conditions which also lead to undefined behavior. This flaw can be triggered by a crafted input file processed by ImageMagick and could impact application availability. The patch uses multiplication in addition to the function `PerceptibleReciprocal()` in order to prevent such divide-by-zero conditions. This flaw affects ImageMagick versions prior to 7.0.9-0.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| imagemagick · Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4 | imagemagick 8:6.9.10.23+dfsg-2.1ubuntu11.4 | May 14, 2021 |
| imagemagick-6-common · Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4 | imagemagick-6-common 8:6.9.10.23+dfsg-2.1ubuntu11.4 | May 14, 2021 |
| imagemagick-6.q16 · Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4 | imagemagick-6.q16 8:6.9.10.23+dfsg-2.1ubuntu11.4 | May 14, 2021 |
| imagemagick-6.q16hdri · Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4 | imagemagick-6.q16hdri 8:6.9.10.23+dfsg-2.1ubuntu11.4 | May 14, 2021 |
| imagemagick-common · Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4 | imagemagick-common 8:6.9.10.23+dfsg-2.1ubuntu11.4 | May 14, 2021 |
| libimage-magick-perl · Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4 | libimage-magick-perl 8:6.9.10.23+dfsg-2.1ubuntu11.4 | May 14, 2021 |
| libimage-magick-q16-perl · Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4 | libimage-magick-q16-perl 8:6.9.10.23+dfsg-2.1ubuntu11.4 | May 14, 2021 |
| libimage-magick-q16hdri-perl · Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4 | libimage-magick-q16hdri-perl 8:6.9.10.23+dfsg-2.1ubuntu11.4 | May 14, 2021 |
| libmagick++-6-headers · Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4 | libmagick++-6-headers 8:6.9.10.23+dfsg-2.1ubuntu11.4 | May 14, 2021 |
| libmagick++-6.q16-8 · Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4 | libmagick++-6.q16-8 8:6.9.10.23+dfsg-2.1ubuntu11.4 | May 14, 2021 |
| libmagick++-6.q16hdri-8 · Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4 | libmagick++-6.q16hdri-8 8:6.9.10.23+dfsg-2.1ubuntu11.4 | May 14, 2021 |
| libmagickcore-6-arch-config · Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4 | libmagickcore-6-arch-config 8:6.9.10.23+dfsg-2.1ubuntu11.4 | May 14, 2021 |
| libmagickcore-6-headers · Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4 | libmagickcore-6-headers 8:6.9.10.23+dfsg-2.1ubuntu11.4 | May 14, 2021 |
| libmagickcore-6.q16-6 · Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4 | libmagickcore-6.q16-6 8:6.9.10.23+dfsg-2.1ubuntu11.4 | May 14, 2021 |
| libmagickcore-6.q16-6-extra · Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4 | libmagickcore-6.q16-6-extra 8:6.9.10.23+dfsg-2.1ubuntu11.4 | May 14, 2021 |
| libmagickcore-6.q16hdri-6 · Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4 | libmagickcore-6.q16hdri-6 8:6.9.10.23+dfsg-2.1ubuntu11.4 | May 14, 2021 |
| libmagickcore-6.q16hdri-6-extra · Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4 | libmagickcore-6.q16hdri-6-extra 8:6.9.10.23+dfsg-2.1ubuntu11.4 | May 14, 2021 |
| libmagickwand-6-headers · Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4 | libmagickwand-6-headers 8:6.9.10.23+dfsg-2.1ubuntu11.4 | May 14, 2021 |
| libmagickwand-6.q16-6 · Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4 | libmagickwand-6.q16-6 8:6.9.10.23+dfsg-2.1ubuntu11.4 | May 14, 2021 |
| libmagickwand-6.q16hdri-6 · Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4 | libmagickwand-6.q16hdri-6 8:6.9.10.23+dfsg-2.1ubuntu11.4 | May 14, 2021 |
| perlmagick · Ubuntu 20.04 LTS (focal) | 8:6.9.10.23+dfsg-2.1ubuntu11.4 | perlmagick 8:6.9.10.23+dfsg-2.1ubuntu11.4 | May 14, 2021 |
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