CVE-2020-27771

MEDIUM

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.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1898290

https://lists.debian.org/debian-lts-announce/2021/03/msg00030.html

Details

Source: MITRE

Published: 2020-12-04

Updated: 2021-03-25

Type: CWE-190

Risk Information

CVSS v2.0

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3.0

Base Score: 3.3

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Impact Score: 1.4

Exploitability Score: 1.8

Severity: LOW

Tenable Plugins

View all (6 total)

IDNameProductFamilySeverity
148080Debian DLA-2602-1 : imagemagick security updateNessusDebian Local Security Checks
medium
145394openSUSE Security Update : ImageMagick (openSUSE-2021-148)NessusSuSE Local Security Checks
medium
145363SUSE SLES12 Security Update : ImageMagick (SUSE-SU-2021:0199-1)NessusSuSE Local Security Checks
medium
145361openSUSE Security Update : ImageMagick (openSUSE-2021-136)NessusSuSE Local Security Checks
medium
145198SUSE SLED15 / SLES15 Security Update : ImageMagick (SUSE-SU-2021:0153-1)NessusSuSE Local Security Checks
medium
145181SUSE SLED15 / SLES15 Security Update : ImageMagick (SUSE-SU-2021:0156-1)NessusSuSE Local Security Checks
medium