The output function in gd_gif_out.c in the GD Graphics Library (aka libgd) allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted image.
http://lists.opensuse.org/opensuse-updates/2016-08/msg00086.html
http://lists.opensuse.org/opensuse-updates/2016-09/msg00078.html
http://www.debian.org/security/2016/dsa-3619
http://www.openwall.com/lists/oss-security/2016/07/05/6
http://www.openwall.com/lists/oss-security/2016/07/05/7
Source: MITRE
Published: 2016-08-12
Updated: 2018-10-30
Type: CWE-125
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