CVE-2018-11656 — ImageMagick: memory leak in ReadDCMImage function in coders/dcm.c

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MEDIUM

ImageMagick: memory leak in ReadDCMImage function in coders/dcm.c

Published Jun 1, 2018

6.5

MEDIUM

CVSS 3.0

EPSS 1.85%

Description

In ImageMagick 7.0.7-20 Q16 x86_64, a memory leak vulnerability was found in the function ReadDCMImage in coders/dcm.c, which allows attackers to cause a denial of service via a crafted DCM image file.

Affected products

Red Hat Enterprise Linux 7

ImageMagick-0:6.9.10.68-3.el7

Fixed · RHSA-2020:1180
Red Hat Enterprise Linux 7

autotrace-0:0.31.1-38.el7

Fixed · RHSA-2020:1180
Red Hat Enterprise Linux 7

emacs-1:24.3-23.el7

Fixed · RHSA-2020:1180
Red Hat Enterprise Linux 7

inkscape-0:0.92.2-3.el7

Fixed · RHSA-2020:1180
Red Hat Enterprise Linux 5

ImageMagick

Will not fix
Red Hat Enterprise Linux 6

ImageMagick

Will not fix
Red Hat Enterprise Linux 8

ImageMagick

Will not fix

Product	Package	State	Advisory
Red Hat Enterprise Linux 7	ImageMagick-0:6.9.10.68-3.el7	Fixed	RHSA-2020:1180
Red Hat Enterprise Linux 7	autotrace-0:0.31.1-38.el7	Fixed	RHSA-2020:1180
Red Hat Enterprise Linux 7	emacs-1:24.3-23.el7	Fixed	RHSA-2020:1180
Red Hat Enterprise Linux 7	inkscape-0:0.92.2-3.el7	Fixed	RHSA-2020:1180
Red Hat Enterprise Linux 5	ImageMagick	Will not fix	n/a
Red Hat Enterprise Linux 6	ImageMagick	Will not fix	n/a
Red Hat Enterprise Linux 8	ImageMagick	Will not fix	n/a

Remediation

Red Hat statement

Red Hat Product Security has rated this issue as having security impact of Low, a future update may address this flaw.

Metrics

1.85% 0.01845

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.

EPSS probability 0.01845

Score over time

2021–2026

EPSS v1
EPSS v2
EPSS v3
EPSS v5

Percentile over time

EPSS v1
EPSS v2
EPSS v3
EPSS v5

Table of values (16 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 3, 2026	1.85% (0.01845)	78.30th	v5 (v2026.06.15)
Jun 15, 2026	1.85% (0.01845)	76.20th	v5 (v2026.06.15)
Jul 20, 2024	0.10% (0.00097)	41.14th	v3 (v2023.03.01)
Apr 10, 2024	0.10% (0.00097)	39.89th	v3 (v2023.03.01)
Oct 23, 2023	0.09% (0.00090)	37.85th	v3 (v2023.03.01)
Jul 8, 2023	0.10% (0.00098)	39.86th	v3 (v2023.03.01)
May 8, 2023	0.08% (0.00080)	32.74th	v3 (v2023.03.01)
Mar 7, 2023	0.10% (0.00098)	39.20th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00885)	27.89th	v2 (v2022.01.01)
Sep 10, 2022	0.89% (0.00885)	26.24th	v2 (v2022.01.01)
Apr 1, 2022	0.89% (0.00885)	24.24th	v2 (v2022.01.01)
Feb 4, 2022	0.89% (0.00885)	10.50th	v2 (v2022.01.01)
Feb 3, 2022	0.78% (0.00777)	21.50th	v1
Jan 6, 2022	0.78% (0.00777)	20.90th	v1
Sep 1, 2021	0.78% (0.00777)	50.67th	v1
Apr 14, 2021	0.78% (0.00777)	0.00th	v1

Weaknesses (2)

CWE-119

Buffer Overflow

CWE-772

References (6)

https://access.redhat.com/security/cve/CVE-2018-11656
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1588170
Issue Tracking
https://github.com/ImageMagick/ImageMagick/issues/931
x_refsource_CONFIRMExploitIssue TrackingThird Party Advisory
https://nvd.nist.gov/vuln/detail/CVE-2018-11656
https://usn.ubuntu.com/3681-1/
vendor-advisoryx_refsource_UBUNTUThird Party Advisory
https://www.cve.org/CVERecord?id=CVE-2018-11656

Link	Providers	Tags
https://access.redhat.com/security/cve/CVE-2018-11656		Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1588170		Issue Tracking
https://github.com/ImageMagick/ImageMagick/issues/931		x_refsource_CONFIRMExploitIssue TrackingThird Party Advisory
https://nvd.nist.gov/vuln/detail/CVE-2018-11656
https://usn.ubuntu.com/3681-1/		vendor-advisoryx_refsource_UBUNTUThird Party Advisory
https://www.cve.org/CVERecord?id=CVE-2018-11656