| Name | CVE-2021-20176 |
| Description | A divide-by-zero flaw was found in ImageMagick 6.9.11-57 and 7.0.10-57 in gem.c. This flaw allows an attacker who submits a crafted file that is processed by ImageMagick to trigger undefined behavior through a division by zero. The highest threat from this vulnerability is to system availability. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2602-1, DLA-3429-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| imagemagick (PTS) | buster | 8:6.9.10.23+dfsg-2.1+deb10u1 | vulnerable |
| buster (security) | 8:6.9.10.23+dfsg-2.1+deb10u5 | fixed |
| bullseye (security), bullseye | 8:6.9.11.60+dfsg-1.3+deb11u1 | fixed |
| sid, trixie, bookworm | 8:6.9.11.60+dfsg-1.6 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://github.com/ImageMagick/ImageMagick/issues/3077
ImageMagick: https://github.com/ImageMagick/ImageMagick/commit/fbd9a963db1ae5551c45dc8af57db0abd7695774
ImageMagick6: https://github.com/ImageMagick/ImageMagick6/commit/90255f0834eead08d59f46b0bda7b1580451cc0f