Integer Overflow or Wraparound Affecting imagemagick package, versions <8:6.9.11.24+dfsg-1
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Test your applications- Snyk ID SNYK-DEBIAN11-IMAGEMAGICK-1045758
- published 26 Nov 2020
- disclosed 4 Dec 2020
Introduced: 26 Nov 2020
CVE-2020-27771 Open this link in a new tabHow to fix?
Upgrade Debian:11 imagemagick to version 8:6.9.11.24+dfsg-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream imagemagick package and not the imagemagick package as distributed by Debian.
See How to fix? for Debian:11 relevant fixed versions and status.
In RestoreMSCWarning() of /coders/pdf.c there are several areas where calls to GetPixelIndex() could result in values outside the range of representable for the unsigned char type. The patch casts the return value of GetPixelIndex() to ssize_t type to avoid this bug. This undefined behavior could be triggered when ImageMagick processes a crafted pdf file. Red Hat Product Security marked this as Low severity because although it could potentially lead to an impact to application availability, no specific impact was demonstrated in this case. This flaw affects ImageMagick versions prior to 7.0.9-0.