| Name | CVE-2020-27761 |
| Description | WritePALMImage() in /coders/palm.c used size_t casts in several areas of a calculation which could lead to values outside the range of representable type `unsigned long` undefined behavior when a crafted input file was processed by ImageMagick. The patch casts to `ssize_t` instead to avoid this issue. Red Hat Product Security marked the Severity as Low because although it could potentially lead to an impact to application availability, no specific impact was shown in this case. This flaw affects ImageMagick versions prior to ImageMagick 7.0.9-0. |
| 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-3357-1 |
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+deb10u7 | fixed |
| bullseye | 8:6.9.11.60+dfsg-1.3+deb11u2 | fixed |
| bullseye (security) | 8:6.9.11.60+dfsg-1.3+deb11u3 | fixed |
| bookworm | 8:6.9.11.60+dfsg-1.6 | fixed |
| bookworm (security) | 8:6.9.11.60+dfsg-1.6+deb12u1 | fixed |
| trixie | 8:6.9.12.98+dfsg1-5 | fixed |
| sid | 8:6.9.12.98+dfsg1-5.2 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://github.com/ImageMagick/ImageMagick/issues/1726
ImageMagick: https://github.com/ImageMagick/ImageMagick/commit/db5e12e24f1378ce8c93a5c35991dcdd23a67bb0
ImageMagick6: https://github.com/ImageMagick/ImageMagick6/commit/14c90fb315eb3666a4cf6d784cbde74c69c934ec