In ImageMagick 7.x before 7.0.8-42 and 6.x before 6.9.10-42, there is a use after free vulnerability in the UnmapBlob function that allows an attacker to cause a denial of service by sending a crafted file.
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00040.html
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00042.html
https://github.com/ImageMagick/ImageMagick/commit/c5d012a46ae22be9444326aa37969a3f75daa3ba
https://github.com/ImageMagick/ImageMagick/compare/7.0.8-41...7.0.8-42
https://github.com/ImageMagick/ImageMagick6/commit/614a257295bdcdeda347086761062ac7658b6830
Source: MITRE
Published: 2019-08-12
Updated: 2019-11-15
Type: CWE-416
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
Base Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 2.8
Severity: MEDIUM