Vulnerability · Published Dec 4, 2020 · Assigned by redhat
CVE-2020-27771
Low 3.3
In plain English
A low-severity integer overflow in ImageMagick. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 68% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | imagemagick | 8:6.9.11.24+dfsg-1 | DEBIAN-CVE-2020-27771 |
| Debian:13 | imagemagick | 8:6.9.11.24+dfsg-1 | DEBIAN-CVE-2020-27771 |
| Debian:14 | imagemagick | 8:6.9.11.24+dfsg-1 | DEBIAN-CVE-2020-27771 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | ImageMagick | ImageMagick 7.0.9-0 |
Weakness: CWE-190